| Quantity: | |
|---|---|
CHEMICAL COMPOSITION
C: 0.52-0.60
Si: 0.17-0.37
Mn: 0.65-0.95
S: ≤0.030
P: ≤0.030
Cr: 0.65-0.95
Ni: ≤0.35
Cu: ≤0.25
V: 0.10-0.20
MECHANICAL PROPERTIES
Tensile Strength σb (MPa): ≥ 1225 (125)
Yield Strength σ0.2 (MPa): ≥1080 (110)
Elongation δ5 (%): ≥ 9
Section shrinkage ψ (%): ≥20
Hardness:
Hot Rolled: ≤ 321HB
Cold Rolled + Heat treatment: ≤ 321 HB
HEAT TREATMENT
Normalizing: The steel needs to be heated to 850℃ to 880℃ and then quickly cooled to room temperature. This process can increase the hardness of the steel.
Tempering: The steel is heated to 150℃ to 200℃ and then cooled to improve its toughness and wear resistance.
FORGING
Hot forming temperature: 1050 – 850°C.
CHEMICAL COMPOSITION
C: 0.52-0.60
Si: 0.17-0.37
Mn: 0.65-0.95
S: ≤0.030
P: ≤0.030
Cr: 0.65-0.95
Ni: ≤0.35
Cu: ≤0.25
V: 0.10-0.20
MECHANICAL PROPERTIES
Tensile Strength σb (MPa): ≥ 1225 (125)
Yield Strength σ0.2 (MPa): ≥1080 (110)
Elongation δ5 (%): ≥ 9
Section shrinkage ψ (%): ≥20
Hardness:
Hot Rolled: ≤ 321HB
Cold Rolled + Heat treatment: ≤ 321 HB
HEAT TREATMENT
Normalizing: The steel needs to be heated to 850℃ to 880℃ and then quickly cooled to room temperature. This process can increase the hardness of the steel.
Tempering: The steel is heated to 150℃ to 200℃ and then cooled to improve its toughness and wear resistance.
FORGING
Hot forming temperature: 1050 – 850°C.
