25X2H4MA
2025-09-29 02:40:00 Origin： Remark：0 Click：
Specification TOCT 4543 type 25X2H4MA round bar, peeled rod, plate from Steelmaking, ESR melted, hot bloomed, forged 25X2H4MA rolled, heat treated
TECHNICAL DATA SHEET - TOCT 4543 type 25X2H4MA
Technical specifications: TOCT 4543 - 1971
Official test report: issued by TUV - SGS - BV
Materail category: alloy structural steel Cr - Ni - Mo type
Typical chemical compostions (mass weight %)
Carbon, C (％): 0.21 ~ 0.28
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.25 ~ 0.55
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromiu, 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 850 Deg. air cooling
Tempering 560 oil cooling
Tensile strength, σb ≥ MPa: 1079
Yield strength, σ0.2 ≥ MPa: 932
Elongation, δ5 ≥ (％): 11.0
Reduction of area, ф ≥ (％): 45.0
Tensile strength, σb ≥ MPa: 1079
Yield strength, σ0.2 ≥ MPa: 932
Elongation, δ5 ≥ (％): 11.0
Reduction of area, ф ≥ (％): 45.0
Impact, AK (J/cm2): 88
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
OFFERING FORMS AND DIMENSIONS
Round bar / rod / disc (diameter): 6.0 to 500mm
Square bar / flat bar: 8 to 620mm
Steel strip: T0.30 ~ 3 X W10 ~ 2000 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 / rod / disc (diameter): 6.0 to 500mm
Square bar / flat bar: 8 to 620mm
Steel strip: T0.30 ~ 3 X W10 ~ 2000 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.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
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