25MoCrS4
2015-01-29 09:43:12 Origin： Remark：0 Click：
DIN EN 10084 Material standards Carburizing structural steel 25MoCrS4 Round bar hot forging & Hot rolling, heat treatment, straightened, ultrasonic test, cold working, machined.
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL DATA SHEET - DIN 25MoCrS4
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.
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. 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 - Quenched and tempered.
The alloy is usually produced by EAF /VD /LF. 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 - Quenched and tempered.
MATERIAL SPECIFICATIONS - DIN EN 10084 (1998), DIN 17210 (1986)
CHEMICAL COMPOSITION (mass fraction - %)
Carbon, C (％): 0.23 ~ 0.29
Silicon, Si (％): 0.15 ~ 0.40
Manganese, Mn (％): 0.60 ~ 0.90
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.02 ~ 0.04
Chromium, Cr (％): 0.40 ~ 0.60
Molybdenum, Mo (％): 0.40 ~ 0.50
Nickel, Ni (％): -
Silicon, Si (％): 0.15 ~ 0.40
Manganese, Mn (％): 0.60 ~ 0.90
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.02 ~ 0.04
Chromium, Cr (％): 0.40 ~ 0.60
Molybdenum, Mo (％): 0.40 ~ 0.50
Nickel, 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≤: 217
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≤: 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: 34
Size /mm: φ30
After surface hardening |σb / MPa: 980~1270
After surface hardening |σb / MPa: 980~1270
fter 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: 34
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 (％)≥: -
After surface hardening |ψ( ％)≥: 35
After surface hardening |δ5 (％)≥: -
After surface hardening |ψ( ％)≥: 35
After surface hardening |AKV / J: -
TYPICAL APPLICATIONS
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 & DIMENSION
Round bar / rod / disc (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.
Round bar / rod / disc (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.
Heavy/middle plate via hot rolled: T60 - 400mm X W50 - 1000mm X L1000 - 5000mm
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.
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.
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