are very soft ,and can be used for bolts and for machine parts that do not need strength.: Alloy steels|High carbon steels|Low carbon steels|Medium carbon steels

Annealing and normalizing present a significant difference on the ductility of low carbon steels.​

中国大学MOOC: Annealing and normalizing present a significant difference on the ductility of low carbon steels.

Annealing and normalizing present a significant difference on the ductility of low carbon steels. A: 正确 B: 错误

For low carbon steels, the Hooke's law σ=Eε is applicable when the unidirectional tensile stress is not greater than ___.

HTLA steels are susceptible to reheat cracking because they are with a lot of (). A: carbides B: hydrogen C: sulphur D: manganese

HTLA steels are susceptible to reheat cracking because they contain a lot of () A: carbides B: H C: S D: P

( ) cracking is generally encountered during postweld heat treatment (PWHT) of steels A: Reheat B: Stress relief C: Hydrogen induced D: Solidification

HTLA steels are susceptible to reheat cracking because they contain a lot of () A: carbides B: H C: S D: P E: 2-3-2 F: 期末

____is<br/>a low-temperature heat treatment used to eliminate all or part of the<br/>effect of cold working in steels. A: Normalizing B: Spheroidizing C: Annealing D: Process<br/>annealing