Cr - Mo Steel SCM445
2026-08-27 15:00:00 Origin： Remark：0 Click：
Alloy structural steel SCM445 Round bar, flat bar and forgings, Steel making, ESR melted, SCM445 Hot forging,Hot rolling, Heat treatment, Straightening, 100% Ultrasonic test, Cold working,
TECHNICAL DATA SHEET - JIS SCM445
Material category: Japanese Standard grade alloy structural steel
Technical specification: Cr -Mo steel, JIS G4053 -2003
Stock in hand: round bar, plate
Typical chemical compositions (mass weight - %)
Carbon, C (％): 0.43 ~ 0.48
Typical chemical compositions (mass weight - %)
Carbon, C (％): 0.43 ~ 0.48
Silicon, Si (%): 0.15 ~ 0.35
Manganese, Mn (％): 0.60 ~ 0.90
Manganese, Mn (％): 0.60 ~ 0.90
Phosphorus, P (％): ≤ 0.030
Sulfur, S (％): ≤ 0.030
Chromium, Cr (%): 0.90 ~ 1.20
Nickel, Ni (%): ≤ 0.25
Molybdenum, Mo (%): 0.15 ~ 0.30
Copper, Cu (%): ≤ 0.30
HEAT TREATMENT & MECHANICAL PROPERTIES
Quenched 830 ~ 880℃, oil cooled
Tempered 530 ~ 630, air cooled
Mechanical property ≥ σb / MPa: 1030
Mechanical property ≥ σs / MPa: 885
Mechanical property ≥ σs / MPa: 885
Mechanical property ≥ δ5 (%): 12
Mechanical property ≥ ψ (％): 40
Mechanical property ≥ Akv J/cm2): 39
Hardness / COND QT.HB: 302 ~ 363
MELTING PROCESS AND APPLICATIONS
The steels shall be manufactured by melting process EF + ESR, EAF+ LF + VD, EAF+ LF + VD + ESR, IFF + ESR Melted.
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.
The steels shall be manufactured by melting process EF + ESR, EAF+ LF + VD, EAF+ LF + VD + ESR, IFF + ESR Melted.
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 & DIMENSIONS
Round bar, rod, disc (diameter): 6.0 to 850 mm
Square bar, flat bar (width X thickness): 10 to 600 mm
Length: random length, or based on the customer's special requirement.
Steel strip: T0.2 ~ 3 X W10 ~ 200mm X Coil
Heavy/middle plate via hot rolled: T4 ~ 200 X W10 ~ 500 X L1000 ~ 12000 mm
Forging piece: stepped shafts, 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: sales@ccsteels.com.
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