| Quantity: | |
|---|---|
CHEMICAL COMPOSITION
C: About 0.42% - 0.50%
Mn: about 0.50% - 0.80%
Si: ≤0.40%
P and S: Strictly controlled at lower levels to improve the purity and performance of the steel
N: Increased through nitriding treatment to improve hardness and wear resistance.
MECHANICAL PROPERTIES
Tensile strength (σb): 580 MPa-1050 MPa
Yield point (σs): ≥430 MPa- ≥565 MPa
Elongation or elongation after break (δ %): ≥16%-≥8%, depending on the thickness of the material
Hardness: Tempered and cold-drawn materials generally have higher hardness levels.
Impact absorbed energy (KV2 J): In the state of tempering and peeling processing, the impact absorbed energy is ≥25 J.
HEAT TREATMENT
Normalizing: 840-900°C, air cooling
Annealing: 680-710°C, furnace cooling
Stress Relief: 550-650°C, air cooling
Oil quenching: 840-870°C
Water quenching: 820-850°C
Tempering: 540-680°C, air cooled
Induction or flame hardening: 870-900°C
FORGING
The forging temperature range of C45R+N steel is recommended to be between 1100°C and 1200°C, and it is necessary to ensure that the steel is fully heated within this temperature range. During the forging process, forging at temperatures below 850°C should be avoided. After forging is completed, it is recommended to cool as slowly as possible in still air or sand to reduce thermal stress and deformation.
CHEMICAL COMPOSITION
C: About 0.42% - 0.50%
Mn: about 0.50% - 0.80%
Si: ≤0.40%
P and S: Strictly controlled at lower levels to improve the purity and performance of the steel
N: Increased through nitriding treatment to improve hardness and wear resistance.
MECHANICAL PROPERTIES
Tensile strength (σb): 580 MPa-1050 MPa
Yield point (σs): ≥430 MPa- ≥565 MPa
Elongation or elongation after break (δ %): ≥16%-≥8%, depending on the thickness of the material
Hardness: Tempered and cold-drawn materials generally have higher hardness levels.
Impact absorbed energy (KV2 J): In the state of tempering and peeling processing, the impact absorbed energy is ≥25 J.
HEAT TREATMENT
Normalizing: 840-900°C, air cooling
Annealing: 680-710°C, furnace cooling
Stress Relief: 550-650°C, air cooling
Oil quenching: 840-870°C
Water quenching: 820-850°C
Tempering: 540-680°C, air cooled
Induction or flame hardening: 870-900°C
FORGING
The forging temperature range of C45R+N steel is recommended to be between 1100°C and 1200°C, and it is necessary to ensure that the steel is fully heated within this temperature range. During the forging process, forging at temperatures below 850°C should be avoided. After forging is completed, it is recommended to cool as slowly as possible in still air or sand to reduce thermal stress and deformation.
