20CrMo3
2015-01-28 09:09:08 Origin： Remark：0 Click：
20CrMo3 / 1.7320 is a Middle carbon Chromium-Molybdenum base Carburizing structural steel with form of round bar, flat bar, plate, and forgings fabricated from steelmaking, ESR, blooming, forging, rolling, heat treatment, cold machined.
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL SPECIFICATION DATASHEET - DIN 20CrMo3 / W-Nr 1.7320
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.
MATERIAL SPECIFICATIONS - DIN EN 10084 (1998), DIN 17210 (1986)
CHEMICAL COMPOSITION (mass weight %)
C (％): 0.17 ～ 0.23
Si (％): ≤ 0.40
Mn (％): 0.60 ～ 0.90
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 0.40 ～ 0.70
Mo (％): 0.30 ～ 0.40
Ni (％): —
Si (％): ≤ 0.40
Mn (％): 0.60 ～ 0.90
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 0.40 ～ 0.70
Mo (％): 0.30 ～ 0.40
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): 850～880
Heat treatment temperature /℃|quenching (Surface): 810~840 Oil
Heat treatment temperature /℃|tempering: 170～210
Hardness after annealing HBS≤: 217
Heat treatment temperature /℃|annealing: 650～700
Heat treatment temperature /℃|carburizing: 900～950
Heat treatment temperature /℃|quenching (Center): 850～880
Heat treatment temperature /℃|quenching (Surface): 810~840 Oil
Heat treatment temperature /℃|tempering: 170～210
Hardness after annealing HBS≤: 217
Size /mm: φ11
After surface hardening |σb/MPa: 1080~1370
After 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: -
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.
PRODUCT PROFILE & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 800mm
Square bar / Flat bar: 10mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
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: T6 - 200mm X W1000- 2500mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W600- 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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