38XH3MA
2025-10-21 09:30:00 Origin： Remark：0 Click：
Material specification TOCT 4543 type 38XH3MA round bar, flat bar 38XH3MA quenched and tempered peeled condition, ESR melted, stock available
TECHNICAL DATA SHEET - TOCT 4543 type 38XH3MA
Technical specifications: TOCT 4543 - 1971
Stock available: ESR ingot, round bar diam. 20 ~ 150mm
Material category: alloy structural steel Cr - Ni - Mo type
Typical chemical compositions (mass fraction %)
Carbon, C (％): 0.33 ~ 0.40
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.25 ~ 0.50
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 0.80 ~ 1.20
Nickel, Ni (％): 2.75 ~ 3.25
Molybdenum, Mo (％): 0.20 ~ 0.30
Molybdenum, Mo (％): 0.20 ~ 0.30
Copper, Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Hot working temperarture: 1180 ~ 900 ℃.
Hot working temperarture: 1180 ~ 900 ℃.
Heat treatment: Quenching 850 ℃. oil cooling
Tempering 590 ℃, air cooling
Tensile strength, Rm ≥ MPa: 1079
Yield strength, Rp0.2 ≥ MPa: 980
Elongation, A5 ≥ (％): 12.0
Reduction of area, Z ≥ (％): 50.0
Tensile strength, Rm ≥ MPa: 1079
Yield strength, Rp0.2 ≥ MPa: 980
Elongation, A5 ≥ (％): 12.0
Reduction of area, Z ≥ (％): 50.0
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.
FORMS AND DIMENSIONS
Round bar & disc (diameter): 6.0 ~ 800 mm
Square bar / flat bar: 8 ~ 500 mm
Steel strip: T0.40 ~ 3 X W10 ~ 300 mm 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.
FORMS AND DIMENSIONS
Round bar & disc (diameter): 6.0 ~ 800 mm
Square bar / flat bar: 8 ~ 500 mm
Steel strip: T0.40 ~ 3 X W10 ~ 300 mm 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 (sales@ccsteels.com) our resident team of qualified production engineers.
If you meet further on any technical enquiry. pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
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