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CHEMICAL COMPOSITION
Fe: 98
C: 0.70-0.80
Mn: 0.40-0.70
S: ≤0.05
P: ≤0.04
MECHANICAL PROPERTIES
Tensile strength: 650 - 880 MPa
Yield strength: 350 - 550 MPa
Elongation: 8 - 25%
Fatigue: 275 MPa
Young's modulus: 200000 MPa
PHYSICAL PROPERTIES
Young’s Modulus: 190 - 210 GPa
Shear Modulus: 80 GPa
Poisson’s Ratio: 0.27 - 0.30
Thermal conductivity: 52 W/m·K
Specific Heat Capacity: 470 J/kg·K
Coefficient of Thermal Expansion: 1.2×10^-5 1/°C
HEAT TREATMENT
Annealing: Usually performed at a temperature of 780±10°C, followed by cooling in the furnace to reduce hardness and improve plasticity.
Quenching: Oil quenching or water quenching can be used. The quenching temperature is usually 830℃±20℃ and oil cooling.
Tempering: Usually carried out at a temperature of 540℃±50℃, sometimes the temperature can be adjusted to ±30℃ according to special needs.
Normalizing: Performed at a temperature of 890±10℃, followed by air cooling to improve the hardness and toughness of the material.
Quenching and Tempering (Q & T): This is a combined heat treatment process that involves first quenching and then tempering to obtain the required hardness and toughness.
FORGING
SAE 1075 carbon steel can be forged at 927 to 1204°C (1700 to 2200°F) followed by annealing.
CHEMICAL COMPOSITION
Fe: 98
C: 0.70-0.80
Mn: 0.40-0.70
S: ≤0.05
P: ≤0.04
MECHANICAL PROPERTIES
Tensile strength: 650 - 880 MPa
Yield strength: 350 - 550 MPa
Elongation: 8 - 25%
Fatigue: 275 MPa
Young's modulus: 200000 MPa
PHYSICAL PROPERTIES
Young’s Modulus: 190 - 210 GPa
Shear Modulus: 80 GPa
Poisson’s Ratio: 0.27 - 0.30
Thermal conductivity: 52 W/m·K
Specific Heat Capacity: 470 J/kg·K
Coefficient of Thermal Expansion: 1.2×10^-5 1/°C
HEAT TREATMENT
Annealing: Usually performed at a temperature of 780±10°C, followed by cooling in the furnace to reduce hardness and improve plasticity.
Quenching: Oil quenching or water quenching can be used. The quenching temperature is usually 830℃±20℃ and oil cooling.
Tempering: Usually carried out at a temperature of 540℃±50℃, sometimes the temperature can be adjusted to ±30℃ according to special needs.
Normalizing: Performed at a temperature of 890±10℃, followed by air cooling to improve the hardness and toughness of the material.
Quenching and Tempering (Q & T): This is a combined heat treatment process that involves first quenching and then tempering to obtain the required hardness and toughness.
FORGING
SAE 1075 carbon steel can be forged at 927 to 1204°C (1700 to 2200°F) followed by annealing.
