Spec yield and ult strengths - true or engineering stress?

blue24
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Are the yield and ultimate strengths that you find in specs (e.g. ASTM A36) true stress or engineering stress values?

Thanks!

Andrew
 
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blue24 said:
Are the yield and ultimate strengths that you find in specs (e.g. ASTM A36) true stress or engineering stress values?

Thanks!

Andrew
Engg stress.
 

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