55S7
2015-09-19 20:37:18 Origin： Remark：0 Click：
NF A36-102 Technical specifications Structure Steel 55S7 Round bar, Flat bar, Plate Steelmaking, ESR melted, 55S7 Heat treatment
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL DATA SHEET - NF 55S7
MATERIAL STANDARDS: NF A36-102
MATERIAL CATEGORY: Hot tandem rolling steel strip
CHEMICAL COMPOSITION (mass fraction - %)
Carbon, C (％): 0.51 ~ 0.60
Silicon, Si (％): 1.60 ~ 2.00
Silicon, Si (％): 1.60 ~ 2.00
Manganese, Mn (％): 0.60 ~ 0.90
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.020
Chromium, Cr (％): ≤ 0.45
Molybdenum, Mo (％): ≤ 0.10
Phosphorus, P (％) ≤: 0.025
Sulfur, S (％) ≤: 0.020
Chromium, Cr (％): ≤ 0.45
Molybdenum, Mo (％): ≤ 0.10
Nickel, Ni (%): ≤ 0.20
Ferrum, Fe (％): balance
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Tensile strength, Rm / MPa ≥: 718
Yield strength, Rp0.2 / MPa ≥: -
Elongation, A5 (％) ≥: -
Elongation, A5 (％) ≥: -
Delivery hardness. HBS ≥: -
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 - QT.
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.
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 (sales@ccsteels.com) our resident team of qualified production engineers.
If you meet further on any technical enquiry. pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.
PRODUCT PROFILE
Round bar / Wire rod (diameter): 5.5mm to 300mm
Square bar / Flat bar: 8mm to 600mm
Length: Fixed length or random length or based on the customer's special requirement.
Round bar / Wire rod (diameter): 5.5mm to 300mm
Square bar / Flat bar: 8mm to 600mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T6 - 200mm X W10 - 1500mm X L1000-12000mm
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