S81
2015-07-04 08:40:22 Origin： Remark：0 Click：
S81 is a middle carbon 3.5% Nickel - 0.9% Chromium high tensile steel, S81 Round bar, flat bar and forgings steelmaking, Electroslag melting, Blooming, Hot Forging, Rolling, Heat treatment, Ultrasonic test, Cold machined.
OFFICIAL TEST CERTIFICATE: issued by TUV - SGS - BV
TECHNICAL DATASHEET - BS S81
MATERIAL CATEGORY - Aircraft "S" series alloy structural steel
TYPE OF STEEL - 0.9Cr-3.4Ni alloy steel
CHEMICAL COMPOSITION (mass weight %)
C (％): 0.28 ~ 0.35
Si (％): ≤ 0.30
Mn (％): ≤ 0.70
P (％)≤: 0.035
S (％)≤: 0.030
Cr (％): 0.50 ~ 1.30
Si (％): ≤ 0.30
Mn (％): ≤ 0.70
P (％)≤: 0.035
S (％)≤: 0.030
Cr (％): 0.50 ~ 1.30
Ni (%): 3.00 ~ 3.75
Mo (％): ≤ 0.50
Mo (％): ≤ 0.50
Other (%): V ≤ 0.25, W ≤ 1.00
Equal to: EN 27
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: Heat treatment
Tensile strength σb≥/MPa: 1150
Yield strength σs≥/MPa: 985
Elongation δ5≥(%): 9.0
Yield strength σs≥/MPa: 985
Elongation δ5≥(%): 9.0
Impact, AKV≥/J: -
Hardness HBS: -
Hardness HBS: -
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.
AVAILABLE FORMS & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 550mm
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: T60 - 400mm X W50 - 1200mm X L1000 - 5000mm
Sheet steel via cold rolled: T0.5 - 6mm X W10 - 900mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
Sheet steel via cold rolled: T0.5 - 6mm X W10 - 900mm X L1000 - 2000mm
Steel strip via cold rolled: T0.1 - 3mm X W5 - 200mm X L (or in coil form)
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry. pleased to EMAIL our resident team of qualified production engineers. E-mail: sales@ccsteels.com
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