ASTM A739 Gr.B22 datasheet,ASTM A739 Gr.B22 chemical,ASTM A739 Gr.B22 heat treatment

ASTM A739 Gr.B22
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Description A739 Grade B22 Suppliers, Inventory A739 Grade B22 Round bar, plate A739 Grade B22 properties Steelmaking, ESR melted, Blooming, Hot forging/rolling, Heat treat, Straightening, 100% Ultrasonic test, Cold working or rough turned machining. Technical specification - ASTM A739. We also possess the advanced precision machining equipments for catering for your different special requirements.
TECHNICAL DATASHEET Grade ASTM A739 Grade B22

Official Test Certificate - issued by TUV - SGSBV
MATERIAL CATEGORY - Low alloy steel
MATERIAL STANDARDS - ASTM A739
CHEMICAL COMPOSITION (Mass weight - %)
C (%):     0.05 ~ 0.15
Si (%):     0.50
Mn (%):   0.30 ~ 0.60
P (%)≤:   0.035
S (%)≤:   0.040
Cr (%):    2.00 ~ 2.50
Mo (%):   0.90 ~ 1.10
MECHANICAL PROPERTIES UNDER ROOM TEMP.
Mechanical property ≥|σs/MPa: 310
Mechanical property ≥|σb/MPa: 515 ~ 655
Mechanical property ≥|δ5(%): 18.0
Mechanical property ≥|ψ(%): 45.0
HEAT TREATMENT PRACTICE
Normalizing temperature /℃: 927 ~ 982
Tempering temperature /℃: 677 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 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 - 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, seamless pipe
PRODUCT PROFILE & DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 550mm
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: T60 - 400mm X W50 - 1200mm X L1000 - 5000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM. 
TECHNICAL SALES ASSISTANCE & SERVICE
If you meet further on any technical enquiry, pleased to EMAIL our resident team of qualified production engineer, Email: sales@ccsteels.com. 

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