20XH3A
2025-04-02 11:47:00 Origin： Remark：0 Click：
Specifications 20XH3A Data sheet, Inventory 20XH3A Chemical, Stocklist 20XH3A Properties from Steelmaking, ESR melted, Blooming, Hot forging, Hot rolling, Heat treatment
TECHNICAL DATA SHEET - TOCT 4543 type 20XH3A
TECHNICAL SPECIFICATION: TOCT 4543 - 1971
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: alloy structural steel Cr - Ni type
CHEMICAL COMPOSITION (WEIGHT %)
Carbon, C (％): 0.17 ~ 0.24
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.30 ~ 0.60
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 0.60 ~ 0.90
Nickel, Ni (％): 2.75 ~ 3.15
Molybdenum, Mo (％): -
Copper, Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1200 ~ 850 Deg.
Hot working temperarture: 1200 ~ 850 Deg.
Heat treatment: Quenching 860 Deg. oil cooling
Tempering 500 water or oil cooling
Tensile strength,σb ≥ MPa: 932
Yield strength, σ0.2 ≥ MPa: 735
Elongation, δ5 ≥ (％): 12.0
Reduction of area, ф ≥ (％): 55.0
Tensile strength,σb ≥ MPa: 932
Yield strength, σ0.2 ≥ MPa: 735
Elongation, δ5 ≥ (％): 12.0
Reduction of area, ф ≥ (％): 55.0
Impact, AK (J/cm2): 98
Annealed hardness | HBW: 241
Annealed hardness | HBW: 241
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
OFFERING FORMS AND DIMENSIONS
Round bar (Diameter): 5.5mm to 500mm
Square bar / Flat bar: 3mm to 500mm
Steel strip: T0.20 ~ 3mm X W10 ~ 1000mm X Coil
Forging piece: stepped shafts, 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
OFFERING FORMS AND DIMENSIONS
Round bar (Diameter): 5.5mm to 500mm
Square bar / Flat bar: 3mm to 500mm
Steel strip: T0.20 ~ 3mm X W10 ~ 1000mm X Coil
Forging piece: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com.
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