Q: What is the carbon content range of Q235 plate?
A: The carbon content of Q235 plate is 0.14%~0.22% (Q235A/B) and 0.12%~0.20% (Q235C/D).
Q: Does Q235 plate contain manganese? What is its content range?
A: Yes. The manganese content of Q235 plate is 0.30%~0.65% (Q235A/B) and 0.30%~0.70% (Q235C/D).
Q: What is the maximum phosphorus content allowed in Q235 plate?
A: - Q235A: ≤0.045%
Q235B: ≤0.045%
Q235C: ≤0.040%
Q235D: ≤0.035%
Q: What is the maximum sulfur content allowed in Q235 plate?
A: - Q235A: ≤0.050%
Q235B: ≤0.045%
Q235C: ≤0.040%
Q235D: ≤0.035%
Q: Does Q235 plate contain silicon? What is its function?
A: Yes, the silicon content is generally ≤0.30%. Silicon can improve the strength and hardness of steel without significantly reducing its plasticity and toughness.