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Surface finish on annealed steel

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  • Surface finish on annealed steel

    I considering taking advantage of a Cyber Monday sale for some steel. Specifically I'm looking at what is called "4140 cold finish, annealed". What does the surface finish of this look like - is it smooth like cold rolled or is it rather rough?

  • #2
    I had a few drops of 1040 annealed, and they had a smooth, dull gray finish. I haven't had enough experience with it to know if that's typical, though.
    Max
    http://joyofprecision.com/

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    • #3
      4140 bar is always smooth in my experience. I'm not familiar with the specific term "cold finish," but I suspect it is synonymous with "cold rolled." The color can be a bit darker / dull than 1018. Finish, though, is the same.

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      • #4
        Surface finish of 4140 stell

        Originally posted by MyrtleLake View Post
        4140 bar is always smooth in my experience. I'm not familiar with the specific term "cold finish," but I suspect it is synonymous with "cold rolled." The color can be a bit darker / dull than 1018. Finish, though, is the same.
        Thanks for the info,sooo the stuff should work
        Browniesharp

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        • #5
          All the 4140 I have gotten has looked the same as 1018 CRS. It did not have scale like hot rolled.

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          • #6
            I'd have thought "cold finish" meant cold rolled, ie no scale same in appearance to any other cold rolled

            Originally posted by Toolguy View Post
            All the 4140 I have gotten has looked the same as 1018 CRS. It did not have scale like hot rolled.
            was it annealed? pretty sure I have various chrome moly's here that have scale, but they may be heat treated and thats where it comes from...hmmm. I'll have to check
            .

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