20X2H4A
2025-02-05 11:25:00 Origin： Remark：0 Click：
Round bar 20X2H4A Ex-stock, rod Stokclist 20X2H4A Steelmaking, ESR melted, Blooming, Hot forging, Hot rolling, Heat treatment
TECHNICAL SPECIFICATION - TOCT 4543 Grade 20X2H4A
TECHNICAL SPECIFICATION: TOCT 4543 - 1971
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: alloy structural steel Cr - Ni type
CHEMICAL COMPOSITIONS ( mass weight - %)
Carbon, C (％): 0.16 ~ 0.22
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.30 ~ 0.60
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 1.25 ~ 1.65
Nickel, Ni (％): 3.25 ~ 3.65
Molybdenum, Mo (％): -
Copper, Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1180 ~ 850 Deg.
Hot working temperarture: 1180 ~ 850 Deg.
Heat treatment: Quenching 860 Deg. oil cooling
Tempering 180 air or oil cooling
Tensile strength, σb ≥ MPa: 1275
Yield strength, σ0.2 ≥ MPa: 1079
Elongation, δ5 ≥ (％): 9.0
Reduction of area, ф ≥ (％): 45.0
Tensile strength, σb ≥ MPa: 1275
Yield strength, σ0.2 ≥ MPa: 1079
Elongation, δ5 ≥ (％): 9.0
Reduction of area, ф ≥ (％): 45.0
Impact, AK (J/cm2): 78
Annealed hardness | HBW: 269.
Annealed hardness | HBW: 269.
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.
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 SIZES
Round bar (diameter): 5.5mm to 550mm
Square bar / Flat bar: 3mm to 500mm
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Forging piece: stepped shafts, 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, Email: sales@ccsteels.com
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers, Email: sales@ccsteels.com
Hot search：20X2H4A
Total list
Monthly rank
- 2450Cr4V2
- 21820M17 / En354
- 1623MnB4 / 1.5535
- 1542Cr4Mo2
- 1465C2BA
- 14E16NCD13
- 13EN 110
- 1311C10S25 & 11S25
- 13EN25 / EN 25
- 1220C15