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Surface finish values

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Nadcap Chemical Processing Auditor - PRI, traveling
Process Engineer / Chemist - Denver Metal Finishing, Colorado


Q. ASTM A109: COLD ROLLED STEEL STRIP, CALLS FOR DULL FINISH, 2B FINISH, AND 2BB FINISH. CAN SOMEONE INFORM ME THE CORRESPONDING ROUGHNESS VALUE, Ra FOR SUCH FINISH.

Thanks,

JIT GUPTA
- Wheeling, Illinois, USA


A. I believe 2B and BA are raw finishes and Ra varies depending on the mills producing them. As far as I know, there are no Ra standards for stainless steel finishes, 2B, 2D, #3, #4, #6, #7 or #8. Check with SSINA or NiDI.

Good luck!

Michael Liu Taylor
Michael Liu Taylor
specialty stainless steel distributor - Dallas, Texas




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