MDMT of 304 SS

[jgibbs22]

Hey Everyone:

Per ASME DIv. 1, what is the MDMT of SA-24-304 stainless steel, assuming no hardness testing? Thanks!

 

[metengr]

You mean what is the MDMT for 304 material where impact tsting is not required?

-320 deg F.

 

[jgibbs22]

Thank you for the response! Would mind telling me the section of Sec VIII you get the -320 from?

 

[jgibbs22]

I should also add that my material is 5.25" thick!

 

[metengr]

UHA-51(d) Exemptions from Impact Testing for Base
Metals and Heat Affected Zones. Impact testing is not
required for Table UHA-23 base metals for the following
combinations of base metals and heat affected zones (if
welded) and MDMTs, except as modified in UHA-51(c):
UHA-51(d)(1) for austenitic chromium–nickel stainless
steels as follows:
(a) Types 304, 304L, 316, 316L, 321 and 347 at
MDMTs of ?320°F (?196°C) and warmer;

 

[eliebl]

Don't forget UHA-51(e)(2).

 

[TJOrlowski]

Also don't forget UHA-51(g).

(whenever applicable)

-TJ Orlowski