31CrMoV9
2015-01-30 09:35:18 Origin： Remark：0 Click：
DIN EN 10085, DIN 17211 Specification of Grade 31CrMoV9 Steel,2.5% Cr-Mo-V Carburized structural steel, 31CrMoV9 Round bar, flat bar and forgings ESR, Hot forging/rolling.
TECHNICAL DATA SHEET - Grade DIN 31CrMoV9
MATERIAL CATEGORY - Carburized structural steel
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 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 / QT
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 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 / QT
MATERIAL SPECIFICATIONS - DIN EN 10085 (2001), DIN 17211 (1987)
CHEMICAL COMPOSITION (mass weight %)
Carbon, C (％): 0.26 ~ 0.34
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.40 ~ 0.70
Phosphorus, P (％)≤: 0.025
Sulfur, S (％)≤: 0.030
Chromium, Cr (％): 2.30 ~ 2.70
Molybdenum, Mo (％): 0.15 ~ 0.25
Vanadium, V (％): 0.10 ~ 0.20
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.40 ~ 0.70
Phosphorus, P (％)≤: 0.025
Sulfur, S (％)≤: 0.030
Chromium, Cr (％): 2.30 ~ 2.70
Molybdenum, Mo (％): 0.15 ~ 0.25
Vanadium, V (％): 0.10 ~ 0.20
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hardness of Carburized layer |HV: 800
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.
Hot working temperature /℃: 1050～850
Heat treatment temperature /℃|annealing: 680～720
Heat treatment temperature /℃|quenching: 840~880 oil or water
Heat treatment temperature /℃|tempering: 570～680
Heat treatment temperature /℃|annealing: 680～720
Heat treatment temperature /℃|quenching: 840~880 oil or water
Heat treatment temperature /℃|tempering: 570～680
Heat treatment temperature /℃|carburizing: 500～520
Hardness after annealing HBS≤: 248
Hardness after annealing HBS≤: 248
Size /mm: ≤40
TS, ≥|σb/MPa: 1230
YS, ≥|σs≥/MPa: 1030
EL, ≥|δ5(％)≥: 9
Impact, ≥|AKV/J (DVM-V form sampling): 34
Impact, ≥|AKV/J (DVM-V form sampling): 34
Size /mm: ≤100
TS, ≥|σb/MPa: 1200
YS, ≥|σs≥/MPa: 800
EL, ≥|δ5(％)≥: 11
≥|AKV/J (DVM-V form sampling): 40
≥|AKV/J (DVM-V form sampling): 40
Size /mm: ≤250
TS, ≥|σb/MPa: 1100
YS, ≥|σs≥/MPa: 700
EL, ≥|δ5(％)≥: 12
≥|AKV/J (DVM-V form sampling): 50
≥|AKV/J (DVM-V form sampling): 50
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.
SHAPES & DIMENSIONS AVAILABLE
Round bar (diameter): 5.5mm to 550mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Round bar (diameter): 5.5mm to 550mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T10 - 400mm X W100 - 1200mm X L1000 - 4000mm
Sheet steel via cold rolled: T1.0 - 6mm X W10 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.5 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Sheet steel via cold rolled: T1.0 - 6mm X W10 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.5 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
ADVANTAGE & SUPERIOR SERVICE
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers, Email:sales@ccsteels.com
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