S123 Stockist, S123 Equivalent Steel

S123
2015-07-13 10:24:33   Origin:   Remark:0 Click:

Specification S123 datasheet, S123 Chemical, Ring forging, Bar steelmaking, Electroslag melting, Hot blooming, Ultrasonic test, hot forging, Rolling, Heat treatment
OFFICIAL TEST CERTIFICATE: issued by TUV - SGSBV

TECHNICAL SPECIFICATION - BS S123
MATERIAL CATEGORY: Aircraft "S" series alloy structural steel
TYPE OF STEEL: 3% Cr-Mo Steel
CHEMICAL COMPOSITION (mass weight - %)    
Carbon, C (%): 0.20 ~ 0.35
Silicon, Si (%): 0.10 ~ 0.35
Manganese, Mn (%): ≤ 0.65
Phosphorus, P (%) ≤: 0.035
Sulfur, S (%) ≤: 0.030
Chromium, Cr (%): 2.50 ~ 3.50
Nickel, Ni (%): ≤ 0.40
Molybdneum, Mo (%): 0.30 ~ 0.70
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Condition: Heat treatment
Tensile strength σb≥/MPa: 1130
Yield strength σs≥/MPa: 835
Elongation δ5≥(%): 10.0
Impact strength, AKv ≥/J:    -
Hardness HBS:  240 min.
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.
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 - Q + T.     
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.
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 
PRODUCT PROFILE & DIMENSIONS
Round bar / Disc (diameter): 5.5mm to 550mm
Square bar / Flat bar: 8mm to 800mm

Heavy/middle plate via hot rolled: T60 - 400mm X W60 - 1000mm X L1000 - 12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W60 - 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, and other different shapes based on OEM. 

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