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Thread: 1018 Or 1144 ??

  1. #41
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    Copper is enriched in steel every time it is recycled, they have to dilute the recycled steel with virgin ore because of that.
    https://pubs.acs.org/doi/pdf/10.1021/acs.est.7b00997

  2. #42
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    Quote Originally Posted by JoeLee View Post
    There is a range of percentage of the elements in 1018. As long as it's within these specs it can still be classified as 1018.

    The element with the widest range is the manganese. I'm guessing that's what makes the stuff easier or harder to machine.

    I've had some 1018 that machines with a decent finish and some that does not.

    JL.............

    Chemical Composition of 1018 Steel


    Chemical Composition

    Element Content
    Carbon, C 0.14 - 0.20 %
    Iron, Fe 98.81 - 99.26 % (as remainder)
    Manganese, Mn 0.60 - 0.90 %
    Phosphorous, P ≤ 0.040 %
    Okay you request the test reports with the metal order. What if it doesn't meet the 1018 spec?

    We saw some that didn't meet the spec, but if that's all that's available what do we do? Can't just go to another supplier since they're all carrying Nucor material.

    For awhile we got our 12L14 from Eagle Bar in Canada. That gets expensive in our relatively small quantities (several hundred pounds) per diameter.

  3. #43
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    I don't quite understand. If it's 1018 and from a reputable mill or distributor how can it not meet the spec to be classified as 1018.
    If the stuff comes from India, China or some online discount supplier selling "sub prime" where the origin is unknown or they tell you they they don't know or can't say, then I can understand it.

    JL..............

  4. #44
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    Quote Originally Posted by JoeLee View Post
    I don't quite understand. If it's 1018 and from a reputable mill or distributor how can it not meet the spec to be classified as 1018.
    If the stuff comes from India, China or some online discount supplier selling "sub prime" where the origin is unknown or they tell you they they don't know or can't say, then I can understand it.

    JL..............
    You don't need to go that far from home... ever heard of Sapa Profiles Inc (Oregon) and NASA?
    Or Kobe steel Japan?
    Or if we widen the span: Takata airbags or Olympus&Toshiba accounting.. And big German automakers wouldn't cheat on tests for sure

  5. #45
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    Quote Originally Posted by MattiJ View Post
    Copper is enriched in steel every time it is recycled, they have to dilute the recycled steel with virgin ore because of that.
    https://pubs.acs.org/doi/pdf/10.1021/acs.est.7b00997
    Great paper!

    Yep.. that what I'm seeing. There all sorts of other stuff in A36 and 1018 also, but in way lessor quantities. Some of the best turning "mild steel" I've had was some black iron pipe from Korea - turned like a mirror.

  6. #46
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    Quote Originally Posted by MattiJ View Post
    Copper is enriched in steel every time it is recycled, they have to dilute the recycled steel with virgin ore because of that.
    https://pubs.acs.org/doi/pdf/10.1021/acs.est.7b00997
    Interesting........

    I'd say the work using 1018 that fell in my lap 30 years ago would not be possible today. It was like winning the lottery. It kickstarted the business into 6 CNC machines so I could move onto the type work I wanted.

  7. #47
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    Quote Originally Posted by DR View Post
    Interesting........

    I'd say the work using 1018 that fell in my lap 30 years ago would not be possible today. It was like winning the lottery. It kickstarted the business into 6 CNC machines so I could move onto the type work I wanted.
    In here they advertise heavily on Ovako M-steels with limited amount of inclusions. They claim anything from 30% to 500% increase in cutter life
    https://www.ovako.com/globalassets/d...---m-steel.pdf
    Calcium-killed steel... Which lead me to https://pmpaspeakingofprecision.com/.../killed-steel/

    Where is our resident metallurgist when we need him? bobslab?
    Was it that traditionally US steelmakers have "killed" or deoxidized the steel with manganese or silicon but nowadays aluminium is more common?
    Aluminium forms aluminium oxide and that is bad business for cutting edges..

  8. #48
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    Quote Originally Posted by wierdscience View Post
    CF =Cold Finished which technically is the correct term for what everyone calls cold rolled.Cold Drawn is also acceptable,though CF seems to be more widely used.Cold Rolled I think comes from the coiled sheetmetal world.
    Haa. Makes sense. Thanks for the education. JR
    My old yahoo group. Bridgeport Mill Group

    https://groups.yahoo.com/neo/groups/...port_mill/info

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