20CrMo5
2015-01-27 10:50:53 Origin： Remark：0 Click：
DIN EN 10084 (1998), DIN 17210 (1986) of grade 20CrMo5, carburizing structural steel, Round bar, flat bar, forgings 20CrMo5 ESR, heat treatment.
TECHNICAL DATASHEET - 20CrMo5 & W-Nr 1.7264
Official Test Certificate: issued by TUV - SGS - BV
MATERIAL CATEGORY: Carburizing 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 Simplified design for bolting configuration compared with martensitic steels or high nickel alloys.are usually supplied bright in the annealed condition, or bright annealing specially.
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 Simplified design for bolting configuration compared with martensitic steels or high nickel alloys.are usually supplied bright in the annealed condition, or bright annealing specially.
Final heat treatment - heat treatment / QT
MATERIAL SPECIFICATIONS - DIN EN 10084 (1998), DIN 17210 (1986)
CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): 0.18 ~ 0.23
Silicon, Si (％): 0.15 ~ 0.35
Manganese, Mn (％): 0.90 ~ 1.20
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 1.10 ~ 1.40
Molybdenum, Mo (％): 0.20 ~ 0.30
Nickel, Ni (％): -
Silicon, Si (％): 0.15 ~ 0.35
Manganese, Mn (％): 0.90 ~ 1.20
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.035
Chromium, Cr (％): 1.10 ~ 1.40
Molybdenum, Mo (％): 0.20 ~ 0.30
Nickel, Ni (％): -
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1050～850
Heat treatment temperature /℃|annealing: 680～700
Heat treatment temperature /℃|carburizing: 840～880
Heat treatment temperature /℃|quenching (Center): 820～850
Heat treatment temperature /℃|quenching (Surface): 810~830 Oil
Heat treatment temperature /℃|tempering: 150～180
Hardness after annealing HBS≤: 207
Heat treatment temperature /℃|annealing: 680～700
Heat treatment temperature /℃|carburizing: 840～880
Heat treatment temperature /℃|quenching (Center): 820～850
Heat treatment temperature /℃|quenching (Surface): 810~830 Oil
Heat treatment temperature /℃|tempering: 150～180
Hardness after annealing HBS≤: 207
Size /mm: φ11
After surface hardening | σb / MPa: 1080~1380
fter surface hardening | σs ≥ / MPa: 735
After surface hardening | δ5 (％) ≥: 7
After surface hardening | ψ (％) ≥: 30
After surface hardening | δ5 (％) ≥: 7
After surface hardening | ψ (％) ≥: 30
After surface hardening | AKv / J: 27
Size /mm: φ30
After surface hardening | σb / MPa: 980~1270
After surface hardening | σb / MPa: 980~1270
After surface hardening | σs ≥ / MPa: 685
After surface hardening | δ5 (％) ≥: 8
After surface hardening | ψ (％) ≥: 35
After surface hardening | δ5 (％) ≥: 8
After surface hardening | ψ (％) ≥: 35
After surface hardening | AKv / J: 27
Size /mm: φ63
After surface hardening | σb / MPa: 780 ~ 1080
After surface hardening | σb / MPa: 780 ~ 1080
After surface hardening | σs ≥ / MPa: 540
After surface hardening | δ5 (％) ≥: 10
After surface hardening | ψ (％) ≥: 35
After surface hardening | δ5 (％) ≥: 10
After surface hardening | ψ (％) ≥: 35
After surface hardening | AKv / J: -
PRODUCT PROFILE & DIMENSIONS
Round bar / rod / disc (diameter): 5.5 to 800mm
Square bar / Flat bar: 10 to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Square bar / Flat bar: 10 to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 200mm X W10 - 1500mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6 X W10 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3 X W5 - 200mm 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 W10 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3 X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
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
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
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