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I have two different plates of different thickness and I need to calculate yield point. Does yield point of steel plate changes with changing of plate thickness?

jsotola
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Akshay Wagdole
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Basically, "no", but here I qualify the answer: If by yield point you mean 'at what loading will this steel plate yield', then it is basically a tensile strength test result. This can be calculated by knowing the specified yield stress strength of the material (fy = ?) and the cross section area subjected to the yield strength (A).

T (at yield) = A * fy

If by yield point you are asking 'what is the yield stress of the steel plates of varying thickness, then it is the same equation, with fy as the unknown:

fy (at yield) = T / A

Manufacturing and fabrication of steel plate can cause localized stresses and material differences, but manufacturers and fabricators take measures to minimize those variations and provide a uniform product. I'm assuming that is beyond the basic question that you were asking.

Thomas Honles
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