18X2H4MA
2026-07-10 16:35:00 Origin： Remark：0 Click：
4.2% Nickel - 1.5 Chromium high tensile steel 18X2H4MA peeled round bar, flat bar, plate 18X2H4MA Stock available ESR melted, hot rolled, heat treated
TECHNICAL DATA SHEET - 18X2H4MA
Technical specifications: TOCT 4543 - 1971
Official test cerficate: issued by TUV - SGS - CNAS
Material category: alloy structural steel Cr - Ni - Mo type
Typical chemical elements (mass weight - %)
Carbon, C (％): 0.14 ~ 0.20
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.25 ~ 0.55
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 1.35 ~ 1.65
Nickel, Ni (％): 4.00 ~ 4.40
Molybdenum, Mo (％): 0.30 ~ 0.40
Molybdenum, Mo (％): 0.30 ~ 0.40
Copper, Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1150 ~ 850 Deg.
Hot working temperarture: 1150 ~ 850 Deg.
Heat treatment: Quenching 950 Deg. air cooling
Tempering 200 oil or air cooling
Tensile strength, Rm ≥ MPa: 1128
Yield strength, Rp0.2 ≥ MPa: 834
Elongation, A5 ≥ (％): 12.0
Reduction of area, Z ≥ (％): 50.0
Tensile strength, Rm ≥ MPa: 1128
Yield strength, Rp0.2 ≥ MPa: 834
Elongation, A5 ≥ (％): 12.0
Reduction of area, Z ≥ (％): 50.0
Impact strength, Akv (J/cm2): 98
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.
PROFILES AND DIMENSIONS
Round bar / rod / disc (diameter): 6.0 to 900 mm
Square bar / flat bar: 8 to 500 mm
Steel strip: T0.20 ~ 3 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 or help, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
If you meet further on any technical enquiry or help, pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
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