TOCT 4543 Gr 30XPA
2025-07-29 13:24:00 Origin： Remark：0 Click：
Material standard specification TOCT 4543 type 30XPA Round bar, Flat bar Steelmaking, ESR melted, Hot forging, Hot rolling, Heat treatment
TECHNICAL DATASHEET - TOCT 4543 Grade 30XPA
TECHNICAL SPECIFICATION: TOCT 4543 - 1971
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: alloy structural steel - Chromium type
CHEMICAL COMPOSITIONS (mass weight %)
Carbon, C (％): 0.27 ~ 0.33
Silicon, Si (％): 0.17 ~ 0.37
Manganese, Mn (％): 0.50 ~ 0.80
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.025
Chromium, Cr (％): 1.00 ~ 1.30
Nickel, Ni (％): ≤ 0.30
Molybdenum, Mo (％): -
Copper, Cu (%): ≤ 0.30
Boron, B (%): 0.001 ~ 0.005
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1150 ~ 800 Deg.
Hot working temperarture: 1150 ~ 800 Deg.
Heat treatment: Quenching 860 Deg. oil cooling
Tempering 200 air cooling
Tensile strength, Rm ≥ MPa: 1568
Yield strength, Rp0.2 ≥ MPa: 1275
Elongation, A5 ≥ (％): 9.0
Reduction of area, Z ≥ (％): 40.0
Tensile strength, Rm ≥ MPa: 1568
Yield strength, Rp0.2 ≥ MPa: 1275
Elongation, A5 ≥ (％): 9.0
Reduction of area, Z ≥ (％): 40.0
Impact, AKv (J/cm2): 49
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.
FORMS AND DIMENSIONS
Round bar / rod / disc (diameter): 5.50 ~ 700mm
Square bar / flat bar: 8 ~ 600mm
Steel strip: T0.20 ~ 3mm X W10 ~ 200mm X Coil
Forging piece: stepped shafts, other different shapes based on OEM.
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.
FORMS AND DIMENSIONS
Round bar / rod / disc (diameter): 5.50 ~ 700mm
Square bar / flat bar: 8 ~ 600mm
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 (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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