25CrMo4
2015-02-08 09:41:25 Origin： Remark：0 Click：
DIN 25CrMo4 is low alloy high tension, good toughness 1.1Cr-0.2Mo structural steel, it is used for cold heading or cold extruding. We also possess advanced precision machining equipments for further processing.Technical standards - DIN EN 10263-4 (2002), DIN 1654 (1989) or by agreement.
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
TECHNICAL SPECIFICATION DATASHEET - DIN 25CrMo4 / W-Nr 1.7218
MATERIAL CATEGORY: Cold heading & cold extruding steel
MATERIAL SPECIFICATIONS: DIN EN 10263-4 (2002), DIN 1654 (1989)
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.22 ~ 0.29
Si (％): ≤ 0.40
Mn (％): 0.60 ~ 0.90
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 0.90 ~ 1.20
Mo (％): 0.15 ~ 0.30
Ni (％): -
Si (％): ≤ 0.40
Mn (％): 0.60 ~ 0.90
P (％)≤: 0.035
S (％)≤: 0.035
Cr (％): 0.90 ~ 1.20
Mo (％): 0.15 ~ 0.30
Ni (％): -
MECHANICAL PROPERTIES - Cold heading/Cold extruding steel
Soft annealing temperature /℃: 680～720
Soft annealed (≤100mm)|σb/MPa: 610
Soft annealed (≤100mm)|ψ(％): 58
Cold draw soft annealed (≤60mm)|σb/MPa: 590
Cold draw soft annealed (≤60mm)|ψ(％): 60
Soft annealed (≤100mm)|σb/MPa: 610
Soft annealed (≤100mm)|ψ(％): 58
Cold draw soft annealed (≤60mm)|σb/MPa: 590
Cold draw soft annealed (≤60mm)|ψ(％): 60
Heat treatment / quenching temperature /℃| water quenching: 840~870
Heat treatment / quenching temperature /℃|oil quenching: 850~880
Heat treatment / tempering temperature /℃: 540~680
Heat treatment / quenching temperature /℃|oil quenching: 850~880
Heat treatment / tempering temperature /℃: 540~680
Mechancial after heat treatment
≥|σb/MPa: 780 - 930
≥|σs/MPa: 590
≥|δ5(％): 14
≥|ψ(％): 55
≥|σb/MPa: 780 - 930
≥|σs/MPa: 590
≥|δ5(％): 14
≥|ψ(％): 55
≥|AKV DVM-V form sampling /J: 55
PRODUCT DESCRIPTION
Proven performance in long-term service.
Extensive database of long term, high temperature test results.
High room and elevated temperature strength, 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.
Proven performance in long-term service.
Extensive database of long term, high temperature test results.
High room and elevated temperature strength, 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.
The alloy is usually produced by EAF +LF + VD / BEF 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
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
AVAILABLE SHAPES
Black bar /Flat bar / Square bar /Pipe, /Steel strip, /sheet
Bright - peeled + polishing, centerless grinding
Forged - ring, tube, pipe casing, discs, shaft
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.
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.
PROFILE AND DIMENSIONS
Round bar (Diameter): 5.5 to 550mm
Square bar / Flat bar: 8 to 800mm
Heavy/middle plate via hot rolled: T6 - 200 X W10 - 1500 X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6 X W6 - 1000 X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3 X W5 - 200 X Lmm (or in coil form)
Forging piece: stepped shafts / other different shapes based on OEM.
Round bar (Diameter): 5.5 to 550mm
Square bar / Flat bar: 8 to 800mm
Heavy/middle plate via hot rolled: T6 - 200 X W10 - 1500 X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6 X W6 - 1000 X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3 X W5 - 200 X Lmm (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.
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers.
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