Technical Details
Chemical composition and Mechanical properties Of CK45 Steel
| Chemical composition(%) of CK45 Steel |
| Element |
C |
Si |
Mn |
S |
P |
| Content |
0.42-0.50 |
0.40 |
0.50-0.80 |
0.02-0.04 |
0.035 |
| Mechanical properties of CK45 Steel |
| Performance |
Tensile strength/Mpa |
Elongation /% |
Yield strength/Mpa |
| Proportion |
580-770 |
4-8% |
330-640 |
Other Analysis
Hardness:
Hardness, Rockwell C (Water quenched on 820-870°C, 5 minutes): 201~269HB
Heat treatment:
Heat Treatment of AISI 1045 (CK45) followed by furnace cooling at 50ºF (28ºC) per hour, to 1200ºF (650ºC) soaking and air cooling. Hardening of this grade is carried out from an austenitizing temperature of 1475-1550ºF (800-845ºC) and oil or water quenching.
Hardening:
Hardening of this grade is carried out from an austenitizing temperature of 1475-1550ºF (800-845ºC) and oil or water quenching.
Flame and induction hardening may be carried out by heating quickly to the desired case depth and quenching in water or oil. This should be followed by a tempering treatment at 300-400ºF (150-200ºC) to reduce stresses in the case without affecting its hardness. A surface hardness of Rc 58 may be obtained by this treatment.
Tempering:
Tempering temperature / ℃ : 552
