题目内容

If the carbon content of a type of steel is 0.1%, this steel is a kind of ().

A. low-carbon steel
B. medium-carbon steel
C. high-carbon steel
D. HTLA steel
E. 2-1-1
F. 章测

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______ cracking is generally encountered during postweld heat treatment (PWHT) of steels.

Liquation cracking temperature range (LCTR) represents a measure of______ susceptibility.

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.

The danger always exists that if the self-restraint test is () severe than the actual application, test results may not predict performance.

A. more
B. not more