1.8509
2025-08-29 11:18:00 Origin： Remark：0 Click：
Caburized alloy steel 1.8509 round bar, flat bar, plate, stockist 1.8509 forgings Properties steelmaking, ESR, hot forged & rolled, heat treated
TECHNICAL DATA SHEET - DIN 1.8509
MATERIAL CATEGORY: carburized structural steel
Official Test Certificate: issued by TUV - SGS - BV
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 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 / QT
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 usually supplied bright in the annealed condition, or bright annealing specially.
Final heat treatment - heat treatment / QT
MATERIAL SPECIFICATIONS - DIN EN 10085 (2001), DIN 17211 (1987)
CHEMICAL COMPOSITIONS (mass fraction %)
Carbon, C (％): 0.38 ~ 0.45
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.40 ~ 0.70
Phosphorus, P (％)≤: 0.025
Sulfur, S (％)≤: 0.035
Chromium, Cr (％): 1.50 ~ 1.80
Molybdenum, Mo (％): 0.20 ~ 0.35
Aluminum, Al (％): 0.80 ~ 1.20
Silicon, Si (％): ≤ 0.40
Manganese, Mn (％): 0.40 ~ 0.70
Phosphorus, P (％)≤: 0.025
Sulfur, S (％)≤: 0.035
Chromium, Cr (％): 1.50 ~ 1.80
Molybdenum, Mo (％): 0.20 ~ 0.35
Aluminum, Al (％): 0.80 ~ 1.20
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working temperature /℃: 1050～850
Heat treatment temperature /℃|annealing: 650～700
Heat treatment temperature /℃|quenching: 880~920 Oil
Heat treatment temperature /℃|tempering: 570～650
Hot working temperature /℃: 1050～850
Heat treatment temperature /℃|annealing: 650～700
Heat treatment temperature /℃|quenching: 880~920 Oil
Heat treatment temperature /℃|tempering: 570～650
Heat treatment temperature /℃|carburizing: 500～520
Hardness after annealing HBS≤: 262
Hardness after annealing HBS≤: 262
Size /mm: ≤40
Tensile strength, σb / MPa: ≥ 980
Yield strength, σs ≥ MPa: 735
Elongation, δ5 (％) ≥: 12.0
Impact strength, ≥ AKv / J (DVM-V form sampling): 34
Impact strength, ≥ AKv / J (DVM-V form sampling): 34
PRODUCT PROFILE
Round bar / disc (diameter): 5.5 to 800mm
Square bar / flat bar: 10 to 800mm
Length: random length or based on the customer's special requirement.
Square bar / flat bar: 10 to 800mm
Length: random length or based on the customer's special requirement.
Heavy / middle plate via hot rolled: T60 - 400 X W100 - 1000 X L1000 - 5000mm
Sheet steel via cold rolled: T0.5 - 6 X W60 - 1000 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 W60 - 1000 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, m.ain 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, m.ain axis, valve rod.
Mechanical parts - connecting rod, bolt and nut.
Multidiameter shaft.
Pressure vessel.
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
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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