What does Q235D mean?
A: Grade D: -20°C impact test (≥27J); strictest S/P (S≤0.035%, P≤0.035%); for cold regions, low-temperature equipment.
What is the chemical composition of Q235?
A (typical):
C: 0.12–0.22%
Mn: 0.30–0.70%
Si: ≤0.35%
S: ≤0.035–0.050% (grade-dependent)
P: ≤0.035–0.045% (grade-dependent).
What is the yield strength of Q235?
A: ≥235 MPa (≤16mm); 225 MPa (16–40mm); 215 MPa (>40mm).
What is the tensile strength of Q235?
A: 375–500 MPa.
What is the elongation of Q235?
A: ≥26% (standard specimen).