40NCD7 / 817M40
2025-09-09 11:02:00 Origin： Remark：0 Click：
High tensile strength steel 40NCD7 shaft Ex-stock ring forging, 817M40 bar wire rod - steelmaking, Electroslag melting, hot forged, rolled, Heat treated
TECHNICAL DATASHEET - 40NCD7 & BS 817M40
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
MATERIAL CATEGORY: Ni - Cr - Mo alloy structural steel
CHEMICAL COMPOSITIONS (mass weight %)
Carbon, C (％): 0.36 ~ 0.44
Silicon, Si (％): 0.10 ~ 0.44
Manganese, Mn (％): 0.45 ~ 0.70
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.030
Chromium, Cr (％): 1.10 ~ 1.40
Silicon, Si (％): 0.10 ~ 0.44
Manganese, Mn (％): 0.45 ~ 0.70
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.030
Chromium, Cr (％): 1.10 ~ 1.40
Nickel, Ni (%): 1.30 ~ 1.70
Molybdenum, Mo (％): 0.20 ~ 0.35
Molybdenum, Mo (％): 0.20 ~ 0.35
Equal to: EN 24
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: Heat treatment
Tensile strength, σb ≥ MPa: 1120~1420
Yield strength, σs ≥ MPa: 785
Elongation, δ5 ≥ (%): 8.0
Yield strength, σs ≥ MPa: 785
Elongation, δ5 ≥ (%): 8.0
Impact strength, AKv ≥/J: -
Hardness HBS: -
Hardness HBS: -
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 rod.
Mechanical parts - connecting rod, bolt and nut.
Multidiameter shaft, Pressure vessel.
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 rod.
Mechanical parts - connecting rod, bolt and nut.
Multidiameter shaft, Pressure vessel.
PRODUCT PROFILE / DIMENSIONS
Round bar / rod (diameter): 6.0 to 500mm
Square bar / flat bar: 8 to 600mm
Length: random length or based on the customer's special requirement.
Round bar / rod (diameter): 6.0 to 500mm
Square bar / flat bar: 8 to 600mm
Length: random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 200 X W10 - 1500 X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6 X W6 - 1000 X L1000 - 2000mm
Steel strip via cold rolled: T0.4 - 3 X W5 - 200 X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Sheet steel via cold rolled: T0.5 - 6 X W6 - 1000 X L1000 - 2000mm
Steel strip via cold rolled: T0.4 - 3 X W5 - 200 X L (or in coil form)
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, Email: sales@ccsteels.com.
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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