Yield strength (thickness ≤ 16mm)?
≥235 MPa.
Yield strength variation with thickness?
16＜t≤40mm: ≥225 MPa
40＜t≤60mm: ≥215 MPa
60＜t≤100mm: ≥205 MPa
Tensile strength?
370~500 MPa.
Elongation (plasticity)?
≥21%~26% (lower requirement for larger thickness).
Impact toughness requirement?
A: No impact test
B: 20℃, ≥27J
C: 0℃, ≥27J
D: -20℃, ≥27J