20XH2M
2025-04-02 12:50:00 Origin： Remark：0 Click：
TOCT 4543 Specification 20XH2M Round bar, Flat bar, Plate Stock available, from Steelmaking, ESR melted, Hot forging, 20XH2M Hot rolling
TECHNICAL DATA SHEET - 20XH2M
TECHNICAL SPECIFICATION: TOCT 4543 - 1971
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: alloy structural steel Cr - Ni - Mo type
CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): 0.15 ~ 0.22
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.40 ~ 0.70
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 0.40 ~ 0.60
Nickel, Ni (％): 1.60 ~ 2.00
Molybdenum, Mo (％): 0.20 ~ 0.30
Molybdenum, Mo (％): 0.20 ~ 0.30
Copper, Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1150 ~ 850 Deg.
Hot working temperarture: 1150 ~ 850 Deg.
Heat treatment: Quenching 860 Deg. oil cooling
Tempering 200 water or oil cooling
Tensile strength, σb ≥ MPa: 883
Yield strength, σ0.2 ≥ MPa: 686
Elongation, δ5 ≥ (％): 11.0
Reduction of area, ф ≥ (％): 50.0
Tensile strength, σb ≥ MPa: 883
Yield strength, σ0.2 ≥ MPa: 686
Elongation, δ5 ≥ (％): 11.0
Reduction of area, ф ≥ (％): 50.0
Impact, AKu (J/cm2): 78
Annealed hardness | HBW: 239
Annealed hardness | HBW: 239
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners.
Mechanical gears, gear shaft, main axis, valve rods.
Mechanical parts - connecting rods, bolts and nuts
Multidiameter shafts.
PROFILE AND DIMENSION
Round bar / disc (diameter): 5.5 to 900mm
Square bar / Flat bar: 8 to 500mm
Steel strip: T0.20 ~ 3 X W10 ~ 200 X L Coil
Forging piece: stepped shafts, and other different shapes based on OEM.
Alloy structural steels are widely used in the filed of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel, machine tools, mechanical components with a bigger sectional size and so on.
Power generation – turbine fasteners – boiler support rods.
Process plant – fasteners.
Mechanical gears, gear shaft, main axis, valve rods.
Mechanical parts - connecting rods, bolts and nuts
Multidiameter shafts.
PROFILE AND DIMENSION
Round bar / disc (diameter): 5.5 to 900mm
Square bar / Flat bar: 8 to 500mm
Steel strip: T0.20 ~ 3 X W10 ~ 200 X L Coil
Forging piece: stepped shafts, and other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
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