S149
2015-07-15 13:36:42 Origin： Remark：0 Click：
Aircraft S149 Middle Carbon with high tensile ESR remelted Structural Steel, Available form in Round bar in stock, Inventory S149 Forgings, Electroslag melting, Heat treatment.
OFFICIAL TEST CERTIFICATE - issued by TUV - SGS - BV
RAW MATERIAL SPECIFICATION - Grade BS S149
MELTING PROCESS - EAF + VD + LF / BEF + ESR
H S CODE For Customs - 7228 4000 / 7228 5000 / 7228 6000
H S CODE For Customs - 7228 4000 / 7228 5000 / 7228 6000
MATERIAL CATEGORY - Aircraft "S" series alloy structural steel
TYPE OF STEEL - Cr 2Ni Mo Steel
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.38 ~ 0.43
Silicon, Si (％): 0.20 ~ 0.35
Manganese, Mn (％): 0.65 ~ 0.85
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.030
Chromium, Cr (％): 0.70 ~ 0.90
Silicon, Si (％): 0.20 ~ 0.35
Manganese, Mn (％): 0.65 ~ 0.85
Phosphorus, P (％) ≤: 0.035
Sulfur, S (％) ≤: 0.030
Chromium, Cr (％): 0.70 ~ 0.90
Nickel, Ni (%): 1.65 ~ 2.00
Molybdenum, Mo (％): 0.20 ~ 0.30
Molybdenum, Mo (％): 0.20 ~ 0.30
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: Heat treatment
Tensile strength σb≥/MPa: 980
Yield strength σs≥/MPa: 835
Elongation δ5≥(%): 13.0
Yield strength σs≥/MPa: 835
Elongation δ5≥(%): 13.0
Impact strength, AKU≥/J: 78 min.
Hardness HBS in annealed condition: 269 max.
Hardness HBS in annealed condition: 269 max.
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 - Quenched and tempered.
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 - Quenched and tempered.
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 nuts.
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, main axis, valve rod, Mechanical parts - connecting rod, bolt and nuts.
Multidiameter shaft, Pressure vessel.
PRODUCT PROFILE & DIMENIONS
Round bar / wire rod (Diameter): 5.5mm to 800mm
Square bar / flat bar: 10mm to 800mm
Heavy/middle plate via hot rolled: T60 ~ 200mm X W100 ~ 1000mm X L1000 ~ 5000mm
Round bar / wire rod (Diameter): 5.5mm to 800mm
Square bar / flat bar: 10mm to 800mm
Heavy/middle plate via hot rolled: T60 ~ 200mm X W100 ~ 1000mm X L1000 ~ 5000mm
Sheet steel via cold rolled: T1.5 - 4mm X W10 - 1000mm X L1000 - 2000mm
Forging piece: stepped shafts, and other different shapes based on OEM.
Forging piece: stepped shafts, and 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. E-mail: sales@ccsteels.com.
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