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Type 416 Stainless Steel Condition?

Type 416 Stainless Steel Condition?

Type 416 Stainless Steel Condition?

(OP)
Hi Everyone,

I am looking at a specification for square bar stock to QQ-S-764/AMS 5610.  Simple enough so far, now my question.

The condition called out is:
"Annealed (Class 6-C), Cold Finish"

My problem is that I can't resolve what "Class 6-C" means exactly because I find next to nothing in the referenced specifications alluding to this phrase.  I think that it may be analagous to "2B Finish" from the ASTM specifications for some sheet and plate based upon a couple of obscure search results that I came across on the web.  However I can't resolve this one way or another it seems.  So if anyone out there can shed light on the deeper meaning of this innocous little phrase....

Any help that the good folks at Eng Tips can provide is most appreciated.

Thanks,

Chris Gervais
Sr. Mechanical Designer
Lytron Corp.

RE: Type 416 Stainless Steel Condition?

You can find an official reference to finish requirements in ASTM A 480 Standard Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip.  A No. 6 Finish is identified as No. 6 Finish—Dull satin finish, Tampico brushed, one or both sides.  A note in the standard states, "This finish has a soft, satin appearance typically produced by tampico brushing a No. 4 finish."  A No. 4 finish is described as "a linearly textured finish that may be produced by either mechanical polishing or rolling."

RE: Type 416 Stainless Steel Condition?

(OP)
Thank you TVP,

I am looking at ASTM A 480 right now.  It is not obvious to me that this would necessarily apply to Square Bar stock but I will take it at face value and go with it.  Any idea whether or not the "C" means anything?  Just curious.

Thanks again,

Chris Gervais
Sr. Mechanical Designer
Lytron Corp.

RE: Type 416 Stainless Steel Condition?

ASTM A 480 covers only flat products.  ASTM A 484 covers stainless steel bars.  Section 8 describes the surface requirements.

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