I got a material property data for a steel as follows.(adsbygoogle = window.adsbygoogle || []).push({});

1.0.2% of proof load 358kg

2.0.2% of proof stress 28.64(kg/sqmm)

My questions are

1)what is proof load

2)what is 0.2% of proof load. Why 0.2%? Why not 0.3%

3)How this proof load is arrived while testing the specimin in a universal tensile testing machine?

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# Material property proof load

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