Q235正火后硬度是多少？

Question

谁知道Q235正火后硬度是多少，谢谢啦！！！

Answer 1

Q235A级含 C ≤0.22% Mn ≤1.4% Si ≤0.35% S ≤0.050 P ≤0.045 Q235B级含 C ≤0.20% Mn ≤1.4% Si ≤0.35% S ≤0.045 P ≤0.045 Q235C级含 C ≤0.17% Mn ≤1.4% Si ≤0.35% S ≤0.040 P ≤0.040 Q235D级含 C ≤0.17% Mn ≤1.4% Si ≤0.35% S ≤0.035 P ≤0.035 正火也要看工艺冷速了，估计小于120~150HB

Answer 2

回复 3# A B C指的是钢材的等级