For steels containing more than ____ % carbon, preheating and subsequent heat treatment generally are required.
A) 0.30
B) 0.40
C) 30
D) 40
Correct Answer:
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Q1: In the steel classification system, the last
Q2: To improve weldability in stainless steel, the
Q4: Low-carbon steel has a carbon content of
Q5: Steel is classified according to _.
A) melting
Q7: If the chromium-nickel content of a stainless
Q9: High-carbon steels usually have a carbon content
Q9: In both steel classification systems, the first
Q16: The strength of _ stainless steels is
Q17: The carbon content of high-manganese steel is
Q18: Most welding processes produce a(n) _ in
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