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BHN Hardness of A106 Gr B Hot Bend.

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JB55

Military
Apr 28, 2009
2
If a bend was found to have a 371 BHN after bending, and no stress relief is called for, what would be the concern's??
 
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371BHN is around 3X the min TS listed for A106 gr.B (182ksi vs 60ksi). Are you sure your BHN value is correct?
 
Yes we are sure there are actually 4 of 7 like that?
 
At this hardness, the bend must have been quenched after hot forming. The concern would be low notch toughness or stress corrosion cracking depending on service conditions.
 
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