NF 40CrMoV4-6
2026-03-10 14:48:00 Origin： Remark：0 Click：
DIN 40CrMoV4-6 is a threaded fastener high tensile steel, widely used in industrial areas of ship, vehicle, airplane, guided missile, weapons, railway, bridges, pressure vessel
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL DATA SHEET - 40CrMoV4-6
Material specifications: NF EN 10269, NF 35-558
Material category: threaded fastener steel - used in high / low temperature
Typical chemical compositions ( mass fraction %)
Carbon, C (％): 0.36 ~ 0.44
Silicon, Si (％): ≤ 0.40
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.45 ~ 0.85
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.030
Phosphorus, P (％): ≤ 0.025
Sulfur, S (％): ≤ 0.030
Chromium, Cr (%): 0.90 ~ 1.20
Nickel, Ni (%): -
Molybdenum, Mo (%): 0.50 ~ 0.65
Vanadium, V (％): 0.25 ~ 0.35
Vanadium, V (％): 0.25 ~ 0.35
Aluminum, Al (%): ≥ 0.015
MECHANICAL PROPERTIES - HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1100 ~ 850
Heat treatment temperature / ℃ | annealing / normalizing : 650 ~ 720
Heat treatment temperature / ℃ | quenching: 880 ~ 930 Oil
Heat treatment temperature / ℃ | tempering: 670 ~ 730
Hardness, HBW: 250 ~ 295
Tensile strength, (≥)|σb/MPa: 850～1000
Yield strength, (≥)|σs/MPa: 700
Elongation, (≥)|δ5(%): 14.0
Impact strength, (≥)|AKV/J: 41
Heat treatment temperature / ℃ | annealing / normalizing : 650 ~ 720
Heat treatment temperature / ℃ | quenching: 880 ~ 930 Oil
Heat treatment temperature / ℃ | tempering: 670 ~ 730
Hardness, HBW: 250 ~ 295
Tensile strength, (≥)|σb/MPa: 850～1000
Yield strength, (≥)|σs/MPa: 700
Elongation, (≥)|δ5(%): 14.0
Impact strength, (≥)|AKV/J: 41
PRODUCT DESCRIPTION
Alloy structural steel is provided with higher yield strength, tensile strength, endurance strength, yield ratio (about 0.85 generally ) enough plasticity and toughness.
The concentration of alloy element of this kind of steel is quite high, mainly are corrosion resistant steel, heat resistant steel, wear resistant steel, and other special steels of physical and chemical properties. Alloy structural steel has preferable mechanical property than that of carbon structural steel, high performance of heat treatment especially.
The alloy is usually produced by EAF + VD /LF + IFF + VD followed by electroslag refining (ESR) if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied bright in the annealed condition, or bright annealing specially.
Final heat treatment - heat treatment / Q+T
TYPICAL APPLICATIONS
Alloy structural steels are widely used in the industrial areas 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.
Process plant – fasteners, Mechanical gears, gear shaft, main axis, valve rod.
Mechanical parts - connecting rod, bolt and nut, Multidiameter shaft, Pressure vessel.
PROFILE & DIMENSIONS
Round bar / rod / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Round bar / rod / disc (diameter): 6.0 to 850 mm
Square bar / flat bar: 10 to 600 mm
Length: random length or based on the customer's special requirement.
Heavy / middle plate via hot rolled: T6 ~ 300 X W15 ~ 1000 X L1000 ~ 12000 mm
Sheet steel via cold rolled: T0.5 ~ 6 X W20 ~ 1000 X L1000 ~ 2000 mm
Steel strip via cold rolled: T0.3 ~ 3 X W10 ~ 200 X L mm (or in coil form)
Forging piece: stepped shafts / other different shapes based on OEM.
Hollow bar / Tubings: OD30 - 1500 mm, with wall thickness ranging from 30 to 350 mm.
Sheet steel via cold rolled: T0.5 ~ 6 X W20 ~ 1000 X L1000 ~ 2000 mm
Steel strip via cold rolled: T0.3 ~ 3 X W10 ~ 200 X L mm (or in coil form)
Forging piece: stepped shafts / other different shapes based on OEM.
Hollow bar / Tubings: OD30 - 1500 mm, with wall thickness ranging from 30 to 350 mm.
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.
Hot search：40CrMoV4-6
Total list
Monthly rank
- 1434CrNiMo6V
- 13X7NiMo6
- 1220Mn5Cr5
- 1112CrMo9-10 / 1.7375
- 1038NiCrMoV7-3
- 1026NiCrMoV11-5
- 10K14675
- 1034CrNiMo4
- 10AMS 6302
- 9K91231