If you are speaking of steel castings then please refer to ASTM E186 and E446.
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If you want to know how well a broom works you do not ask the guy selling the broom or the guy who designed the broom, you ask the guy using the broom.
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"Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856