Elevated temperature properties

[metalonis]

I am trying to determine the elevated temperature (350 °F) mechanical properties of ASTM A276 UNS S31600, cold drawn stainless steel with Sy=75000 psi and Su=95000 psi. I haven't been able to locate published data for elevated tensile properties of cold drawn material. It has been suggested that the mechanical properties follow the same curve as annealed material. Does this seem reasonable? Also, I'd appreciate any leads to published data if it exists.

 

[metengr]

metalonis;
If you have no published data, here is a suggestion that might help you. After giving this some thought, you can use ASME B&PV Code, Section II, Part D, Table 3 for bolting materials. There is an ASTM A 193 Grade B8M or B8M2, where the 316 stainless steel bolt material is solution treated and strain hardened to achieve desired strength properties at RT.

There is a Grade B8M where the yield and tensile are very close to your 316 stainless steel (95 Ksi, UTS, 65 Ksi, YS). In evaluating the allowable stress values for this bolting material at the desired service temperature, the reduction in allowable stress is as follows;

16.3 Ksi at 350 deg F /18.8 Ksi at 100 deg F.

If anything, this at least gives you a knock down factor to work with.

 

[metalonis]

Thanks. I'll take a look.

 

[EdStainless]

You might be able to find curves for ASTM A666 'hard temper rolled' sheet. (1/8 hard, 1/4 hard)

Metengr gave you the allowed stresses, if you look in the back of Part D it should give you the actual tensile properties at temperature that those are based on.

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Plymouth Tube

 

[metalonis]

Thanks for your suggestions. As it turns out, the logic of determining the mechanical properties at elevated temperatures based on published curves for metals of identical chemistry and room temp mechanicals but different spec number was accepted by ACI and TSSA but not ABSA.