2015-10-14 21:25:41 Origin： Remark： Click：
Technical specification of French standards structure steel 38B3 datasheet - NF 38B3 Chemical compositions, mechanical properties from Steelmaking, ESR melted, Blooming, NF 38B3 Forging, Hot rolling, Heat treatment, Straightening, Ultrasonic test, Cold working or Machined. We also possess the advanced precision machining equipments for further processing. Please just let us know what you inquire. Technical specification - NF A35-556, A35-558.
Official Test Certificate: issued by TUV - SGS - BV
TECHNICAL SPECIFICATION / DATASHEET - NF 38B3
MATERIAL TYPE: Fasteners steel
MATERIAL STANDARDS: NF A35-556, A35-558
CHEMICAL COMPOSITION (WEIGHT %)
C (％): 0.34~0.40
Si (％): 0.10~0.40
Mn (％): 0.60~0.90
P (％)≤: 0.035
S (％)≤: 0.035
Cr (%): -
Ni (%): -
Mo (%): -
Other(％): B 0.0008~0.0050
Condition: + QT
Tensile strength σb≥/MPa: 785
Yield strength σs≥/MPa: 635
Elongation δ5 ≥(%): 12
Reduction of area ψ(％) ≥: 45
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 + IFF + VD 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
Round bar /Flat bar / Square bar /Tube, /Steel strip, /sheet
Bright - peeled + polishing, centerless grinding
Forged - ring, discs, shaft
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 rods
Mechanical parts - connecting rod, bolt and nut
Round bar / Wire rod (Diameter): 0.50mm to 800mm
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: T6 - 200mm X W1000- 2500mm X L1000-12000mm
Sheet steel via cold rolled: T0.5 - 6mm X W600- 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 with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Pipes / Tubings: OD 3-219 mm, with wall thickness ranging from 0.50 to 35 mm.
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