20MoCrS4
2015-01-28 09:48:24 Origin： Remark：0 Click：
Technical specifications of DIN 20MoCrS4 Carburizing structural steel, 1.7323 Round bar, flat bar, and plate Steelmaking, Hot forging, rolling, heat treatment, ultrasonic test, cold machined.
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL SPECIFICATION DATASHEET - DIN 20MoCrS4 / W-Nr 1.7323
MATERIAL CATEGORY: Carburizing structural steel
PRODUCT DESCRIPTION
Proven performance in long-term service.
Extensive database of long term, high temperature test results.
High room and elevated temperature strength.Good creep.
High notch tolerance.
Thermal expansion coefficients compatible with low alloy steel turbine casing materials.
Lower design and operating risks
Simplified design for bolting configuration compared with martensitic steels or high nickel alloys.
Extensive database of long term, high temperature test results.
High room and elevated temperature strength.Good creep.
High notch tolerance.
Thermal expansion coefficients compatible with low alloy steel turbine casing materials.
Lower design and operating risks
Simplified design for bolting configuration compared with martensitic steels or high nickel alloys.
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, 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
The alloy is usually produced by EAF /VD /LF, 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 10084 (1998), DIN 17210 (1986)
CHEMICAL COMPOSITION (mass weight %)
C (％): 0.17 ~ 0.22
Si (％): ≤ 0.40
Mn (％): 0.70 ~ 1.00
P (％)≤: 0.035
S (％)≤: 0.020 ~ 0.040
Cr (％): 0.30 ~ 0.60
Mo (％): 0.40 ~ 0.50
Ni (％): -
Si (％): ≤ 0.40
Mn (％): 0.70 ~ 1.00
P (％)≤: 0.035
S (％)≤: 0.020 ~ 0.040
Cr (％): 0.30 ~ 0.60
Mo (％): 0.40 ~ 0.50
Ni (％): -
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1150～850
Heat treatment temperature /℃|annealing: 650～700
Heat treatment temperature /℃|carburizing: 900～950
Heat treatment temperature /℃|quenching (Center): 890～920
Heat treatment temperature /℃|quenching (Surface): -
Heat treatment temperature /℃|tempering: 170～210
Hardness after annealing HBS≤: 207
Heat treatment temperature /℃|annealing: 650～700
Heat treatment temperature /℃|carburizing: 900～950
Heat treatment temperature /℃|quenching (Center): 890～920
Heat treatment temperature /℃|quenching (Surface): -
Heat treatment temperature /℃|tempering: 170～210
Hardness after annealing HBS≤: 207
Size /mm: φ11
After surface hardening |σb/MPa: 880~1180
After surface hardening |σs≥/MPa: 635
After surface hardening |δ5(％)≥: 9
After surface hardening |ψ(％)≥: 35
After surface hardening |δ5(％)≥: 9
After surface hardening |ψ(％)≥: 35
After surface hardening |AKV/J: 41
Size /mm: φ30
After surface hardening |σb/MPa: 780~1080
After surface hardening |σb/MPa: 780~1080
After surface hardening |σs≥/MPa: 590
After surface hardening |δ5(％)≥: 10
After surface hardening |ψ(％)≥: 40
After surface hardening |δ5(％)≥: 10
After surface hardening |ψ(％)≥: 40
After surface hardening |AKV/J: 41
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
Round bar / Wire rod (Diameter): 5.5mm to 800mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Square bar / Flat bar: 3mm 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 - 6mm X W60 - 1000mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Forging piece: stepped shafts, other different shapes based on OEM.
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm 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.
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