题目内容
Specialty tests to evaluate susceptibility to various metallurgically related defects,such as solidification cracking or hydrogen cracking, should be conducted in the alloy development or selection stage.
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The danger always exists that if the self-restraint test is () severe than the actual application, test results may not predict performance.
With carbon equivalent ( ), the steel has a low tendency to harden and cold cracking?
( ) is not a factor that affects weldability.
The calculation formula of carbon equivalent of the IWS considers the influence of () on weldability.
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