Re: [MW:29076] grain size requirements for 321H stainless steel

Coarse for high creep strength and fine for high UTS

On Sun, 10 Feb 2019 4:22 pm sandeep kumar <sandeepdhiman63@gmail.com wrote:

Dear all

Please advise your views on below query:

ASTM A182 10.1.2 Grades F 321H, F 347H, and F 348H shall have a

grain size of ASTM No. 7 or coarser.

What does it stand for coarser? 

Does it mean a higher ASTM grain size no (e.g. 8, 9 and so on) or lower ASTM grain size no. (e.g. 6, 5, 4 and so on)?

Thanks & regards

Sandeep 

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