12CrMoV, alloy structural steel. Unified digital code: A31122
Standard: GB / T 3077-1988
[1] [chemical composition] (wt) (%)
Carbon C: 0.08 ~ 0.15
Si Si: 0.17 ~ 0.37
Manganese Mn: 0.40 ~ 0.70
Sulfur S: to allow the residual content of ≤ 0.035
Phosphorus P: allow the residual content ≤ 0.035
Chromium Cr: 0.30 ~ 0.60
Ni: to allow the residual content of ≤ 0.030
Copper Cu: to allow the residual content ≤ 0.030
Vanadium V: 0.15 ~ 0.30
Mo Mo: 0.25 ~ 0.35
[2] [Mechanical properties]
Blank sample size (mm): 30
Heat treatment:
The first quenching temperature (℃): 970; coolant: air
Second quenching temperature (℃): -
Tempering heating temperature (℃): 750; coolant: air
Tensile strength σb (MPa): ≥ 440 (45)
Yield strength σs (MPa): ≥ 225 (23)
Elongation δ5 (%): ≥ 22
Reduction of area ψ (%): ≥ 50
Impact energy Akv (J): ≥ 78
Impact toughness αkv (J/cm2): ≥ 98 (10)
Brinell hardness (HBS100/3000) (annealing or tempering condition): ≦ 241
Delivery status: to heat treatment (normalizing, annealing, or tempering) or heat treatment delivery, delivery status should be indicated in the contract.
[Main features]
This is a type of heat-resistant pearlitic steel, long-term use at high temperatures when the organization has a high thermal stability and strong resistance, heat treatment thermal sensitivity is low, no tendency to temper brittleness; steel, plastic deformation in the cold high, cutting good; welding in general, but the wall thickness of parts to be heated to 200 ~ 300 ℃, after welding, in addition to stress the need for treatment. This steel is usually tempered at high temperature and high temperature normalizing the state to use, the use of temperature -40 ~ 560 ℃.
Standard: GB / T 3077-1988
[1] [chemical composition] (wt) (%)
Carbon C: 0.08 ~ 0.15
Si Si: 0.17 ~ 0.37
Manganese Mn: 0.40 ~ 0.70
Sulfur S: to allow the residual content of ≤ 0.035
Phosphorus P: allow the residual content ≤ 0.035
Chromium Cr: 0.30 ~ 0.60
Ni: to allow the residual content of ≤ 0.030
Copper Cu: to allow the residual content ≤ 0.030
Vanadium V: 0.15 ~ 0.30
Mo Mo: 0.25 ~ 0.35
[2] [Mechanical properties]
Blank sample size (mm): 30
Heat treatment:
The first quenching temperature (℃): 970; coolant: air
Second quenching temperature (℃): -
Tempering heating temperature (℃): 750; coolant: air
Tensile strength σb (MPa): ≥ 440 (45)
Yield strength σs (MPa): ≥ 225 (23)
Elongation δ5 (%): ≥ 22
Reduction of area ψ (%): ≥ 50
Impact energy Akv (J): ≥ 78
Impact toughness αkv (J/cm2): ≥ 98 (10)
Brinell hardness (HBS100/3000) (annealing or tempering condition): ≦ 241
Delivery status: to heat treatment (normalizing, annealing, or tempering) or heat treatment delivery, delivery status should be indicated in the contract.
[Main features]
This is a type of heat-resistant pearlitic steel, long-term use at high temperatures when the organization has a high thermal stability and strong resistance, heat treatment thermal sensitivity is low, no tendency to temper brittleness; steel, plastic deformation in the cold high, cutting good; welding in general, but the wall thickness of parts to be heated to 200 ~ 300 ℃, after welding, in addition to stress the need for treatment. This steel is usually tempered at high temperature and high temperature normalizing the state to use, the use of temperature -40 ~ 560 ℃.
