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Which type of furnace is required in solution annealing?

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Why steel is preferred for construction of aircraft?

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What is gold investment casting?

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Does case harden steel properties detoriates over time? Especially for guns, parts like bolt carrier, the brand new parts has been kept for 10 year and properly oiled. I am worried about its surface hardness to take the blow during firing.

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Define what is the grain size of lead as an element and as an alloy such as lead tin alloy?

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What is galvanising?

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What is the specific heat value for liquid ?

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What is lathe bed made of ?

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