I watched this with no real need beyond basic understanding, but i find someone offering even esoteric knowledge so clearly and jargon-free is irresistible. Really well presented; my thanks!
I'm not much of a metalworker, but always wondered what those numbers meant. Many thanks for a concise, helpful and informative explanation. Well done.
Real informative. Nicely presented. I like the cards with the numbers plainly written. Easy to follow being able to see the numbers as you spoke about each one. Thank you.
" I like the cards with the numbers plainly written. " Inspired, possiby, by Bob Dylan's 1965 'video' that accompanied his song "subterranean Homesick Blues" He used flashcards to, perhaps, imprint the lyrics in our minds... Seemed innovative then, but probably had precedent in silent movies? It is, good, though, in that the data is front and centre, we're not distracted by a presenter turning to a board behind him...
we used 4340 for the axles on our drums for head and tail pulleys on our elevator belt unloading conveyors due to it's added toughness over 4140 . we used the higher grade as used in the mining industry for durability . thanks for an easy to understand , well explained video !!
Good info! This is the system I learned when I started my T&D apprenticeship back in '77. But there seems to be a bunch of trade-names and letter/number combinations for todays 'designer' alloys.
There have always been trade names used by steel producers. Some l can think of just from using them . Graph-Mo (O-6) from Latrobe Steel. They also had Graph-Air (A-10). Both graphitic tool steels with excellent machinability. Hy-10M. An oil hardening die steel. Mirralloy. A TG&P shafting steel. Carpenter 158 (P-6). Oil hardening mold steel also used for machinery parts. Then there are the non ferrous metals. Having both trade names and common names. The Ampcos, Mic 6, German Silver (copper-nickel alloy) and others.
@@mpetersen6 Yep, we used to buy so much we'd get a trailer direct from Carpenter. 16ft lengths of A6 Vega, S7 Bearcat, O2 Stentor, A2 Air-Wear, etc. Crucible has own their trade-names too. CPM-123-xyz is what I'm seeing a lot of now. And it seems todays designer knife-makers have their own alpha-numeric code which I haven't figured out yet.
I get good results from using 1045. A good general use metal is especially popular for CNC Turned components. Another positive of this metal is that it can be hardened to well over 50 Rockwell in either Water or Oil.
I work in a forge shop as a designer, brand new to the industry. I’ve got a whole list of different kinds of steel with their densities which I use for calculating weights among other things. This was pretty informative.
I just clicked on the video and I don't know if it's good or not, but I just want to send some appreciation just for posting the video and trying to share the knowledge 🎉
Great job! I worked with various alloys during my career as a product developer and with all the ones you clearly explained here. Most of the steels I used needed wear resistance and impact resistance. As with any metal, the more exotic the alloy, the higher the cost and lower availability. I used the Machinery's Handbook as a guide for material selection for years. As with many resource materials today, it is available in digital form as well as print.
Thank you for such a well presented description. This is so refreshing in a vast sea of Hype, BS and Content theives that simply repost with a usually very inacurate Ai voice over. I will be forwarding your link. And Yes, I have subscribed. I very seldom do.
Fantastic, I don't have anything to do with steel apart from day to day life but your clear and concise description made an interesting video on a subject that has always been at the back of my mind when looking at different uses of steel, thank you, have a good day.
As a former toolmaker - we used a lot of Bohler's 476 tool-steel - came in black coarse finish - that had to be removed first. It gave off a very definite 'stink' while machining and bright purple shavings - quite unlike anything else.
The SAE system is pretty straight forward What annoys me is when you deal with "older"? Machinists they use "trade name " like "silver steel" so I cant make quick decisions on steel as I have to look up the trade name THEN we get on to the Japanese system it would be really nice if there was ONE system
Many other STANDARDS have very different specs. for specific purposes that do not fit into the SAE system . Not all specs are based on the content but on other qualities .
I knew an ( old machinist ) that could look and listen to the steel and tell you what the content was and if he needed to know the amount of carbon the grinder could tell him that . Sadly the old machinist are gone for the most part and the new breed of cnc college born people who cant fix anything without an analysis
Very well done, thank you. These videos are becoming a rarity on YT. Videos that are practical, useful, and helpful take a backseat to flashy, "sponsored", overly-produced marketing material made to promote and commercialize the channel.
I saw this video, and thought,"Oh, a toolmaker. Tool and die, progressive dies, plastic injection molds?" No, literally someone who makes hand-tools, which is cool. I've been in the precision tooling trade for 40 years, and S-7 is my favorite tool steel. Take it up to 58Rc, double draw, cryo treat and it'll last forever. 😃Terrible rust resistance, though.😐
I've been involved with BMX since the late 80's and 4130 has always been the absolute standard for frame selection, nothing else has ever done including Titanium (high tensile strength but low sheer strength) or aluminum (requiring a thicker wall diameter to accommodate strength). the closest to match 4130 chomoly has been 7076 T6 Aluminum, the same thing commercial airplane frames are made of
@@jamisonr I used to have a GT Dyno with white Skyway mags, still miss that thing. the BMX frame I have now is 4130 and only 4lbs made by a British company called Total
@@jamisonr I don't get along with larger wheel size bikes, been riding BMX for 30 years. can't do a lot of what I used to in my younger days but I still have fun
Question: Just noticed ceramic ball bearings are now being used in bicycle racing carbon wheels. What future does ceramics have in the Machining Industry?
Great stuff but I would have liked to see something about music steel AKA spring steel. I guess a complete video would go on for days.😃 Thanks for this video...its a great introduction.
I've always wondered if you could use one of those Xray spectrometers that gold dealers use to verify precious metals on steel? Machines like the XRF spectrometer or the Sigma Metalytics verifier can not only tell you the percentage of gold, but the percentage of what other metals may have been alloyed with it. Most often copper, silver, palladium, or zinc. And in the knife world you hear all sorts of numbering systems. Plus the word magnacut steel gets touted as top of the line.
XRF will pick up the other elements of interest in steel such as nickel cr mo si mn and tramp elements such as S and P and others (with varying degrees of accuracy at low percentage levels) but EF cannot pick up the most important element carbon. Some of the tools will try to basically guess what grade of steel it is given the ranges of other elements but for example, if you had a 4145 steel the tool might guess it as 4150 or 4140, but it doesn’t actually determine the Carbon you need a different tool for that.
You left out M tool steels. Usually called High Speed steel used as a cutting tool. Probably one of the most important tool steels out there. M2, M3, and M42 are common. As for 5160, it's spring steel very common in leaf springs (6150 in coil springs) and if you're into knife making, 5160 is a nice material for sword blades. Been involved in manufacturing and metals my whole life, although carbon steels are more on the rare side. We work mostly with steels like Alloy20, Incoloy800, CD4, Duplex 2205, H-loy C, 440C, Nitronic50, 316L, Ferralium 255, etc., although 9310 and 8620 are not uncommon for pivot pins. Bottom line, it's nice to see other people out there who work with their hands AND their minds to make things. 🙂
You are right, the M series is very important. I inadvertently left it out of my non-exhaustive list since I don't use it as much as some steel. Someone once gave me a piece of M50. What can you tell me about that one?
@@jasonlonontoolmaker that would be high carbon, high vanadium bearing and tooling steel used where fatigue strength is needed. Punches and dies in my experience are the usual uses but for a blacksmith the wear resistance, toughness and strength at high temps might make it a great hot tool candidate.
A36 steel usually references the specification ASTM A 36 it was purchased to , not the particular grade of steel however, it’s usually around 1020 1025 steel. That specification is driven by minimum mechanical properties not so much chemical limits, so the manufacturers have some flexibility as long as they meet mechanicals . It’s about the most entry-level steel one would purchase unless they wanted something softer like 1010 steel.
interesting. Another quick method of alloy identification is to use a X-Ray Fluorescent Analyzer (XRF). A handheld unit can be purchased for ~$12k and will give you the grade in just a few seconds. Also handy for figuring out what the alloy is after any identifying marks have been removed.
To figure out what steel I have I always look at the mill report, for example Farm Report; cloudy with a chance of rain Mill Report; Hot and noisy with a chance of being hotter and noisier
His use of the term ‘tenths ‘ for the determination of the carbon level is colloquially appropriate and correct. Except the high carbon Cr bearing steels all steels are under 1%of carbon content so by saying a steel is a tenth of A ( ie 1) percent he is saying it’s a 1/10 of 1 percent - which is how it’s understood. absolutely no one ever describes the carbon content in terms of hundreds of percent except maybe some chemistry professors. In some places it’s just referred to as ‘points’ such as 25 point steel. Ie 1025 Another way to describe it would be to say 1025 steel is .25 wt% carbon
Sure, but if we're talking about, say, 1018 steel it doesn't have 18 tenths of a percent carbon. So for people without that specialised knowledge (which is still unclear to me from your explanation) it's ambiguous and confusing.
@@dielaughing73 think it’s just a quirk of English language how sometimes we say things that are imprecise especially when it comes to fractions of a percent, but the meaning is understood. A lot of steels are just the tenths ~ .2.3.4.5 . obviously in the machining world tenths hundreds thou 10 thou is critical but the chemistry callout terminology, for steel is more relaxed because people are not mixing up a batch of steel on the spot , but just eluding to standard stock such as 1018. I’ve never heard of anyone reference the carbon in hundredths but everyone is free to Ask their supplier to provide them with 2 tenths carbon steel and 8 hundredths carbon steel.
12L14 is a low carbon, free-machining steel. The addition of lead aids in it's machinability. Machinable and weldable are terms to describe different properties of steel, and are used to describe different grades of steel, but are not part of a specification.
These videos are great! Thank you! I wish I was young enough to actually remember all of this but I put these into my favorites. I was wondering when you were gonna get to 4340 because that’s what my SBC crankshaft is. I have a Bridgeport mill and Clausing lathe. I’m a home hobbiest and love it! My mind is everywhere lol. I love learning. I’d like to melt down some cast iron to make a follow rest one day because somehow they lost it. Almost bran new 80’s machine. 12X40 VS-12. It has zero wear luckily. It still has the original belts on it too. I got lucky. I want to learn hardening steel and aluminum. Do you also work with aluminum? I think these kind of videos will do really well
Very interesting. Is there a list somewhere of all the first digit steel type designations? Knife manufacturers sometimes indicate the steel used in particular knives, it would be interesting to be able to decifer these. Similarly, there is a a designation system for aluminium alloys. Is there also a deciphering table somewhere for that?
Here is a link to a list of the first digits of the AISI / SAE carbon and alloy steel system I talked about in the video. www.theprocesspiping.com/wp-content/uploads/2017/12/sae-aisi-table.png
Interesting and consise presentation, thanks a lot. I'd like to go deeper into this. Are there any (official) tables / standards available that provide detailed information on chemical composition of the grades, based on these 4 digits? I mean that just a glance and some memory should be enough to see that this grade will be fine, and the other one won't work. Getting through the masses of datasheets with % range of each element is not what I need or like. Any hint, please? Or how to ask google to get the links quickly? Thanks in advance.
"write the grade on the steel..." Assumes your workmates can read... I marked a piece of material "tool steel, do not use" quite clearly, but one of the fitters ignored, or failed to read the marking, cut the material up to use as spacers... Then complained he found it hard to work... He'd selected it because it was a short piece of material, easy to carry to the saw... that it was expensive didn't matter to him...
I think you'll find the main 'element' in carbon steel is 'Fe' Iron - the carbon content rarely goes above 1% and only up to 2% for knives and specialist cutting tooling.
VERY plain and simple. No noise, no crap. WELL DONE!
That is a great complement. Thanks!
Oh and no annoying Intro
I watched this with no real need beyond basic understanding, but i find someone offering even esoteric knowledge so clearly and jargon-free is irresistible. Really well presented; my thanks!
Glad it was enjoyable!
Same here!
Masterclass on how to present information correctly and concisely. Thank you!
Excellent presentation, the other comments say it all. Clear, concise, no crap.
Thank you from Ukraine. Before this video I knew of Soviet Union steel marking. Good and simply explanations.
Very well done. Like another person said, no obnoxious music or jarring graphics. Just good information well presented. Thanks.
I'm not much of a metalworker, but always wondered what those numbers meant. Many thanks for a concise, helpful and informative explanation. Well done.
Glad it was helpful!
One of the best short intro to steel types I have seen. Super cool. :)
Glad you liked it!
Real informative. Nicely presented. I like the cards with the numbers plainly written. Easy to follow being able to see the numbers as you spoke about each one.
Thank you.
" I like the cards with the numbers plainly written. " Inspired, possiby, by Bob Dylan's 1965 'video' that accompanied his song "subterranean Homesick Blues" He used flashcards to, perhaps, imprint the lyrics in our minds... Seemed innovative then, but probably had precedent in silent movies? It is, good, though, in that the data is front and centre, we're not distracted by a presenter turning to a board behind him...
An object lesson in presentation; no fluff, no guff and absolutely on point. Thank you for taking the time and trouble. Bravo !
Brings me back to late 70's apprenticeship in Detroit.
Thank You! I learned something that I should have learned 60+ years ago.
Glad it was helpful!
we used 4340 for the axles on our drums for head and tail pulleys on our elevator belt unloading conveyors due to it's added toughness over 4140 . we used the higher grade as used in the mining industry for durability . thanks for an easy to understand , well explained video !!
Good info! This is the system I learned when I started my T&D apprenticeship back in '77. But there seems to be a bunch of trade-names and letter/number combinations for todays 'designer' alloys.
hahaha ya beat me to it ! Exactly
There have always been trade names used by steel producers. Some l can think of just from using them . Graph-Mo (O-6) from Latrobe Steel. They also had Graph-Air (A-10). Both graphitic tool steels with excellent machinability. Hy-10M. An oil hardening die steel. Mirralloy. A TG&P shafting steel. Carpenter 158 (P-6). Oil hardening mold steel also used for machinery parts. Then there are the non ferrous metals. Having both trade names and common names. The Ampcos, Mic 6, German Silver (copper-nickel alloy) and others.
@@mpetersen6 Yep, we used to buy so much we'd get a trailer direct from Carpenter. 16ft lengths of A6 Vega, S7 Bearcat, O2 Stentor, A2 Air-Wear, etc.
Crucible has own their trade-names too.
CPM-123-xyz is what I'm seeing a lot of now. And it seems todays designer knife-makers have their own alpha-numeric code which I haven't figured out yet.
Jason, great and enriching video. Thank you for sharing your knowledge with us. The world needs more people like you!!
Thanks for the kind words! Glad to hear it was useful to you.
I get good results from using 1045.
A good general use metal is especially popular for CNC Turned components.
Another positive of this metal is that it can be hardened to well over 50 Rockwell in either Water or Oil.
I work in a forge shop as a designer, brand new to the industry. I’ve got a whole list of different kinds of steel with their densities which I use for calculating weights among other things. This was pretty informative.
Glad it was helpful to you.
Very good short intro to a Big subject.
Thanks.
I just clicked on the video and I don't know if it's good or not, but I just want to send some appreciation just for posting the video and trying to share the knowledge 🎉
Great job! I worked with various alloys during my career as a product developer and with all the ones you clearly explained here. Most of the steels I used needed wear resistance and impact resistance. As with any metal, the more exotic the alloy, the higher the cost and lower availability. I used the Machinery's Handbook as a guide for material selection for years. As with many resource materials today, it is available in digital form as well as print.
Thank you for such a well presented description.
This is so refreshing in a vast sea of Hype, BS and Content theives that simply repost with a usually very inacurate Ai voice over.
I will be forwarding your link. And Yes, I have subscribed. I very seldom do.
You're very welcome!
Fantastic, I don't have anything to do with steel apart from day to day life but your clear and concise description made an interesting video on a subject that has always been at the back of my mind when looking at different uses of steel, thank you, have a good day.
As a former toolmaker - we used a lot of Bohler's 476 tool-steel - came in black coarse finish - that had to be removed first. It gave off a very definite 'stink' while machining and bright purple shavings - quite unlike anything else.
The SAE system is pretty straight forward What annoys me is when you deal with "older"? Machinists they use "trade name " like "silver steel" so I cant make quick decisions on steel as I have to look up the trade name THEN we get on to the Japanese system it would be really nice if there was ONE system
Many other STANDARDS have very different specs. for specific purposes that do not fit into the SAE system . Not all specs are based on the content but on other qualities .
I knew an ( old machinist ) that could look and listen to the steel and tell you what the content was and if he needed to know the amount of carbon the grinder could tell him that . Sadly the old machinist are gone for the most part and the new breed of cnc college born people who cant fix anything without an analysis
Yeah, silver steel, kite, keewatin, high speed. We used to colour code and stamp the steel stock .
Try German steel
Never saw a video of this channel, but i liked how it was explained, always had this doubt in my mind but i never had actually searched for it 😂
And then there's my FAVORITE: 12L14. 0.15-0.35% Pb makes it a joy to machine, especially for novices such as myself. Thanks for the excellent vid.
Thanks for the very informative video!
You are welcome!
First rate! Thank you very much. Simple and easy to follow. I know it gets more complex, but this is a great start.
Very interesting. It would have been a bonus to understand how the spark stream can roughly tell you the type of steel. That is real wizardry
That would be an interesting video!
Very well done, thank you.
These videos are becoming a rarity on YT. Videos that are practical, useful, and helpful take a backseat to flashy, "sponsored", overly-produced marketing material made to promote and commercialize the channel.
Good introduction to a few basic steel types
We use a few different more specialized types in our product (engineered steel chains)
Yes, just to be simple you guys use an 'S' or a 'T'. Or perhaps a number like 60 or 80. And they're interchangeable..
Not a machinist, surprised such low percentages could make so much difference in performance.
-- Thanks for the quick education. ---
Very welcome! Yes, a minute difference in carbon content makes a big difference in performance.
Wonderful and important information ❤
The "D" in D-2 steel stands for Die Steel and is still used today for die making punches and shear blade for working other metals in industry. ;
This was really straightforward and helpful, thanks so much for taking the time to make this video.
Extremely handy information. Thanks for the video.
Thanks for this. Good 1st time intro.
I saw this video, and thought,"Oh, a toolmaker. Tool and die, progressive dies, plastic injection molds?" No, literally someone who makes hand-tools, which is cool. I've been in the precision tooling trade for 40 years, and S-7 is my favorite tool steel. Take it up to 58Rc, double draw, cryo treat and it'll last forever. 😃Terrible rust resistance, though.😐
Thank you for making things come into view.
Thank you Ron Swanson of the steel world. I enjoyed this
Thanks for taking the time to put this together. Very informative.
I loved milling P20, beautiful characteristics.
4140 & 4150 steels are used in gun barrels. Good stuff.
... Bad stuff.
@@Hertog_von_Berkshire, let me guess, you're a stainless barrel aficionado. They're cute, but, Melonited 4150 barrels will make stainless go bye-bye.
Wow next time I buy knives I’ll be so much more informed. Thank you😊
Great video, thanks for posting
Excellent video - well done and well explained. Great presentation style.
Glad you liked it!
Thanks, have always wondered how it works.
I've been involved with BMX since the late 80's and 4130 has always been the absolute standard for frame selection, nothing else has ever done including Titanium (high tensile strength but low sheer strength) or aluminum (requiring a thicker wall diameter to accommodate strength). the closest to match 4130 chomoly has been 7076 T6 Aluminum, the same thing commercial airplane frames are made of
@@jamisonr I used to have a GT Dyno with white Skyway mags, still miss that thing. the BMX frame I have now is 4130 and only 4lbs made by a British company called Total
@@jamisonr I don't get along with larger wheel size bikes, been riding BMX for 30 years. can't do a lot of what I used to in my younger days but I still have fun
Excellent! Always wondered. Thank you. Now, please, do stainless.
Great suggestion. I am considering a basic metallurgy series. What else would you like to see on those lines?
Nice presentation.
Thank you for sharing. Opens a lot.
Glad it's helpful for you.
Question: Just noticed ceramic ball bearings are now being used in bicycle racing carbon wheels. What future does ceramics have in the Machining Industry?
Good question.
Great stuff but I would have liked to see something about music steel AKA spring steel.
I guess a complete video would go on for days.😃
Thanks for this video...its a great introduction.
US standards of generally available steels . There are many other special steels available around the world .
You are right! Perhaps I should do a series of videos on steel names and numbers?
This was a very informative and interesting video, thank you.
I've always wondered if you could use one of those Xray spectrometers that gold dealers use to verify precious metals on steel? Machines like the XRF spectrometer or the Sigma Metalytics verifier can not only tell you the percentage of gold, but the percentage of what other metals may have been alloyed with it. Most often copper, silver, palladium, or zinc. And in the knife world you hear all sorts of numbering systems. Plus the word magnacut steel gets touted as top of the line.
XRF will pick up the other elements of interest in steel such as nickel cr mo si mn and tramp elements such as S and P and others (with varying degrees of accuracy at low percentage levels) but EF cannot pick up the most important element carbon. Some of the tools will try to basically guess what grade of steel it is given the ranges of other elements but for example, if you had a 4145 steel the tool might guess it as 4150 or 4140, but it doesn’t actually determine the Carbon you need a different tool for that.
Well done. Sincere and clear
You left out M tool steels. Usually called High Speed steel used as a cutting tool. Probably one of the most important tool steels out there. M2, M3, and M42 are common.
As for 5160, it's spring steel very common in leaf springs (6150 in coil springs) and if you're into knife making, 5160 is a nice material for sword blades.
Been involved in manufacturing and metals my whole life, although carbon steels are more on the rare side. We work mostly with steels like Alloy20, Incoloy800, CD4, Duplex 2205, H-loy C, 440C, Nitronic50, 316L, Ferralium 255, etc., although 9310 and 8620 are not uncommon for pivot pins.
Bottom line, it's nice to see other people out there who work with their hands AND their minds to make things. 🙂
You are right, the M series is very important. I inadvertently left it out of my non-exhaustive list since I don't use it as much as some steel. Someone once gave me a piece of M50. What can you tell me about that one?
@@jasonlonontoolmaker
Don't think I've ever worked with that steel.
@@jasonlonontoolmaker
I looked it up. Looks like it's a bearing steel similar to 52100.
@@jasonlonontoolmaker that would be high carbon, high vanadium bearing and tooling steel used where fatigue strength is needed. Punches and dies in my experience are the usual uses but for a blacksmith the wear resistance, toughness and strength at high temps might make it a great hot tool candidate.
Would chrome-vanadium fall under a special type of tool steel?
Missed 3 common steels in my shop... A-36, 1144, and 12L14
12L14 ,12L15 the screw machinists' best friends
A36 steel usually references the specification ASTM A 36 it was purchased to , not the particular grade of steel however, it’s usually around 1020 1025 steel. That specification is driven by minimum mechanical properties not so much chemical limits, so the manufacturers have some flexibility as long as they meet mechanicals . It’s about the most entry-level steel one would purchase unless they wanted something softer like 1010 steel.
Thank you sir for explaining this system!
Most welcome!
I recall the old days of referring to mild steel as either St37, Fe37 or En1A.
that was awesome! thanks!
Let's here it for 01, D2 ,D6 ,A2 and W2!
Excellent job. You could be the only person that has explained this this well. Is sheet the same numbering and what is better to machine/turn?
Good video ~ very informative.
great explanation. thank you
interesting. Another quick method of alloy identification is to use a X-Ray Fluorescent Analyzer (XRF). A handheld unit can be purchased for ~$12k and will give you the grade in just a few seconds. Also handy for figuring out what the alloy is after any identifying marks have been removed.
@@lancedoyle5026 XRF can not detect carbon level, thus can not be used for plain carbon steels grading.
that pretty well covers my needs. Thanks.
Glad to help
Very interesting. I'd be interested to know about other alloys especially for marine use. Many thanks. From Ireland.
Dude, thank you for this!!!!
To figure out what steel I have I always look at the mill report, for example
Farm Report; cloudy with a chance of rain
Mill Report; Hot and noisy with a chance of being hotter and noisier
Thanks for valuable information
Very clear and useful .
Glad it was helpful!
Could you do a video on stainless numbering? 300 series like 304, 316. And the hardening ones like 15-5 and 18-8.
Very informative. Thank you.
Great Job!😊😊
D2 Steel was used to make the heavy stamping dies in automotive factories…pressing panels
His use of the term ‘tenths ‘ for the determination of the carbon level is colloquially appropriate and correct.
Except the high carbon Cr bearing steels all steels are under 1%of carbon content so by saying a steel is a tenth of A ( ie 1) percent he is saying it’s a 1/10 of 1 percent - which is how it’s understood. absolutely no one ever describes the carbon content in terms of hundreds of percent except maybe some chemistry professors. In some places it’s just referred to as ‘points’ such as 25 point steel. Ie 1025
Another way to describe it would be to say 1025 steel is .25 wt% carbon
Sure, but if we're talking about, say, 1018 steel it doesn't have 18 tenths of a percent carbon. So for people without that specialised knowledge (which is still unclear to me from your explanation) it's ambiguous and confusing.
@@dielaughing73 think it’s just a quirk of English language how sometimes we say things that are imprecise especially when it comes to fractions of a percent, but the meaning is understood. A lot of steels are just the tenths ~ .2.3.4.5 . obviously in the machining world tenths hundreds thou 10 thou is critical but the chemistry callout terminology, for steel is more relaxed because people are not mixing up a batch of steel on the spot , but just eluding to standard stock such as 1018. I’ve never heard of anyone reference the carbon in hundredths but everyone is free to Ask their supplier to provide them with 2 tenths carbon steel and 8 hundredths carbon steel.
@@andrewc9902 hey, at least we're talking about decimals and not sixteenths or thirty-seconds
Nice Liam Hoffman Leather Apron in the background!!
You know it! I have a pre production prototype which has served me well for several years.
Great info! Glad I stumbled upon this video , subscribed so I can learn more.
Welcome aboard!
@@jasonlonontoolmaker Thanks!
Really useful, thanks ! I am however thinking of Bob Dylan's 'Subterranean Homesick Blues' for some reason.
Great! Thanks for the info.
Great explanation. Thanks!
*6:15** XRF tester? I was thinking of getting one if they are reliable for testing alloys.*
Great video thank you !!!!!!!!
Great video!
Subscribed, great useful video as I'm a welder
Great video!
Awesome explanation. Thanks!! What's 12L14? Where does high machine ability steel and weldable steel com into the mix...?
12L14 is a low carbon, free-machining steel. The addition of lead aids in it's machinability. Machinable and weldable are terms to describe different properties of steel, and are used to describe different grades of steel, but are not part of a specification.
These videos are great! Thank you! I wish I was young enough to actually remember all of this but I put these into my favorites. I was wondering when you were gonna get to 4340 because that’s what my SBC crankshaft is. I have a Bridgeport mill and Clausing lathe. I’m a home hobbiest and love it! My mind is everywhere lol. I love learning. I’d like to melt down some cast iron to make a follow rest one day because somehow they lost it. Almost bran new 80’s machine. 12X40 VS-12. It has zero wear luckily. It still has the original belts on it too. I got lucky. I want to learn hardening steel and aluminum. Do you also work with aluminum? I think these kind of videos will do really well
Very interesting. Is there a list somewhere of all the first digit steel type designations? Knife manufacturers sometimes indicate the steel used in particular knives, it would be interesting to be able to decifer these. Similarly, there is a a designation system for aluminium alloys. Is there also a deciphering table somewhere for that?
Here is a link to a list of the first digits of the AISI / SAE carbon and alloy steel system I talked about in the video. www.theprocesspiping.com/wp-content/uploads/2017/12/sae-aisi-table.png
Helpful information
Thanks for making the video, i liked it!
Interesting and consise presentation, thanks a lot. I'd like to go deeper into this. Are there any (official) tables / standards available that provide detailed information on chemical composition of the grades, based on these 4 digits? I mean that just a glance and some memory should be enough to see that this grade will be fine, and the other one won't work. Getting through the masses of datasheets with % range of each element is not what I need or like. Any hint, please? Or how to ask google to get the links quickly? Thanks in advance.
Thanks. Very informative. Curious though, I buy A36 steel for various projects. What does the A and the 36 stand for. Also, what is AR500 steel?
Good to know we a steel worker
Excellent! Thanks!
Very informative. Rule number 1 which I never seem to follow! write the grade on the steel
"write the grade on the steel..." Assumes your workmates can read... I marked a piece of material "tool steel, do not use" quite clearly, but one of the fitters ignored, or failed to read the marking, cut the material up to use as spacers... Then complained he found it hard to work... He'd selected it because it was a short piece of material, easy to carry to the saw... that it was expensive didn't matter to him...
@@boblawson1006reading is a conscious act for some people :(
Then promptly chuck the other end and turn off the lable! 😉👍
I think you'll find the main 'element' in carbon steel is 'Fe' Iron - the carbon content rarely goes above 1% and only up to 2% for knives and specialist cutting tooling.
Informative, thankyou.