ASTM A739 Gr. B11 Stockist, ASTM A739 Gr. B11 Equivalent Steel

ASTM A739 Gr. B11
2015-12-07 14:05:30   Origin:   Remark:0 Click:

ASTM A739 Material Specification of High tensile steel B11 Round bar, flat bar, plate, ASTM A739 Grade B11 Steelmaking, Hot forging, Hot rolling, Heat treatment
 
TECHNICAL DATASHEET - ASTM A739 Grade B11

Official Test Certificate: issued by TUV - SGS -  BV
MATERIAL CATEGORY: Low alloy high tensile steel
MATERIAL STANDARDS: ASTM A739
CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (%): 0.05 ~ 0.20
Silicon, Si (%): 0.50 ~ 0.80
Manganese, Mn (%): 0.40 ~ 0.65
Phosphorus, P (%) ≤: 0.035
Sulfur, S (%) ≤: 0.040
Chromium, Cr (%): 1.00 ~ 1.50
Molybdenum, Mo (%): 0.45 ~ 0.65
HEAT TREATMENT PRACTICE
Normalizing temperature /℃: 927 ~ 982
Tempering temperature /℃: 649 Min.
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Mechanical property, yield strength, ≥|σs/MPa: 310
Mechanical property, tensile strength, ≥|σb/MPa: 483~655
Mechanical property, elongation, ≥|δ5(%): 18.0
Mechanical property, reduction of area, ≥|ψ(%): 45.0
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 IFF /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 nut, Multidiameter shaft, Pressure vessel.
PRODUCT PROFILE & DIMENSIONS
Round bar / Disc (diameter): 5.5mm to 800mm
Square bar / Flat bar: 6mm to 600mm
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
Forging piece: stepped shafts, other different shapes based on OEM.
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry. pleased to EMAIL (sales@ccsteels.com) our resident team of qualified production engineers.

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