Mechanical Properties
grade |
yield strength Rel(Mpa) |
Tensile strength Rm(Mpa) |
Percentage Elongation A(%) |
Contraction percentage of Area Z(%) |
Impact toughness |
C |
≥ 414 |
620-793 |
≥ 12 |
≥ 55 |
≥ 70 |
D |
≥ 620 |
794-965 |
≥ 10 |
≥ 50 |
≥ 58.8 |
K |
≥ 414 |
620-793 |
≥ 12 |
≥ 55 |
≥ 70 |