TOCT 4543 Gr.15X
2025-03-15 16:00:00 Origin： Remark：0 Click：
ГOCT 4543 type 15X Round bar, Flat bar, plate 15X Steelmaking, ESR melted, Blooming, Hot forging, Hot rolling, Heat treatment
TECHNICAL SPECIFICATION - TOCT 4543 Grade 15X
TECHNICAL SPECIFICATION: TOCT 4543 - 1971
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: alloy structural steel - Chromium type
CHEMICAL COMPOSITIONS (mass weight %)
C (％): 0.12 ~ 0.18
Si (％): 0.17 ~ 0.37
Mn (％): 0.40 ~ 0.70
P (％) ≤: 0.035
S (％) ≤: 0.035
Cr (％): 0.70 ~ 1.00
Ni (％): ≤ 0.30
Mo (％): -
Cu (%): ≤ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Hot working temperarture: 1200 ~ 800 Deg.
Hot working temperarture: 1200 ~ 800 Deg.
Heat treatment: Quenching 800 Deg. oil cooling
Tempering 180 air or oil cooling
Tensile strength,σb/≥ MPa: 686
Yield strength, σ0.2/≥ MPa: 490
Elongation, δ ≥(％): 12.0
Reduction of area, ф ≥ (％): 45.0
Tensile strength,σb/≥ MPa: 686
Yield strength, σ0.2/≥ MPa: 490
Elongation, δ ≥(％): 12.0
Reduction of area, ф ≥ (％): 45.0
Impact, AK (J/cm2): 69
Annealed hardness | HBW: 179
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 DIMENSION
Round bar (diameter): 5.50mm to 500mm
Square bar / flat bar: 3mm to 500mm
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm X Coil
Forging piece: stepped shafts, other different shapes based on OEM.
Annealed hardness | HBW: 179
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 DIMENSION
Round bar (diameter): 5.50mm to 500mm
Square bar / flat bar: 3mm to 500mm
Steel strip: T0.20 ~ 3mm X W10 ~ 2000mm 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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