Chemical composition(mass fraction)(wt.%) of the Ck55
C ≤ | Si ≤ | Mn ≤ | P ≤ | S ≤ | Cr | Ni |
---|---|---|---|---|---|---|
0.52-0.60 | 0.40 | 0.60-0.90 | 0.030 | 0.035 | ||
Mo | Al | Cu | Nb | Ti | V | Ce |
N | Co | Pb | B | Other |
Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade Ck55
Yield Rp0.2(MPa) | Tensile Rm(MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) |
---|---|---|---|---|---|---|
329 (≥) | 739 (≥) | 41 | 42 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 132 |