SMnC443
2025-10-02 14:01:00 Origin： Remark：0 Click：
JIS Standard alloy structural steel SMnC443 peeled bar, flat bar, cold drawn rod, steelmaking, ESR melted, hot bloomed, forged, rolled, heat treated
TECHNICAL DATA SHEET - JIS SMnC443
Material category: Japanese Standard grade alloy structural steel
Material specifications: Cr -Mn Steel, JIS G4053 -2003
Officical test report: issued by TUV - SGS - BV
Typical chemical compositions (mass fraction %)
Carbon, C (％): 0.40 ~ 0.46
Typical chemical compositions (mass fraction %)
Carbon, C (％): 0.40 ~ 0.46
Silicon, Si (%): 0.15 ~ 0.35
Manganese, Mn (％): 1.35 ~ 1.65
Manganese, Mn (％): 1.35 ~ 1.65
Phopshorus, P (％) ≤: 0.030
Sulfur, S (％) ≤: 0.030
Chromium, Cr (%): 0.35 ~ 0.70
Nickel, Ni (%): ≤ 0.25
Molydenum, Mo (%): -
Copper, Cu (%): ≤ 0.30
HEAT TREATMENT & MECHANICAL PROPERTIES
Quenched 830 ~ 880℃, water cooled
Tempered 550 ~ 650, rapid cooled
Mechanical property ≥ σb / MPa: 930
Mechanical property ≥ σs / MPa: 785
Mechanical property ≥ σs / MPa: 785
Mechanical property ≥ δ5 (%): 13
Mechanical property ≥ ψ (％): 40
Mechanical property ≥ Akv J/cm2): 49
Hardness / COND QT.HB: 269 ~ 321
MELTING PROCESS AND APPLICATIONS
The steels shall be manufactured by melting process EF + ESR, EAF+ LF + VD, EAF+ LF + VD + ESR, IFF + ESR Melted. VIM + ESR can be handled by agreement.
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
PRODUCT PROFILE
Round bar / disc (diameter): 6.0 to 800mm
Square bar / flat bar (Width X Thickness): 8 to 600mm
Length: random length, based on the customer's special requirement.
Steel strip: T0.20 ~ 3 X W10 ~ 200 X Coil
Heavy/middle plate via hot rolled: T4 - 200 X W100 - 1500 X L1000-12000mm
Forging piece: stepped shafts, and other different shapes based on OEM requirement.
The steels shall be manufactured by melting process EF + ESR, EAF+ LF + VD, EAF+ LF + VD + ESR, IFF + ESR Melted. VIM + ESR can be handled by agreement.
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
PRODUCT PROFILE
Round bar / disc (diameter): 6.0 to 800mm
Square bar / flat bar (Width X Thickness): 8 to 600mm
Length: random length, based on the customer's special requirement.
Steel strip: T0.20 ~ 3 X W10 ~ 200 X Coil
Heavy/middle plate via hot rolled: T4 - 200 X W100 - 1500 X L1000-12000mm
Forging piece: stepped shafts, and other different shapes based on OEM requirement.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. Email us: lh.steel@hotmail.com
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. Email us: lh.steel@hotmail.com
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