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50 Application:China structural steel and alloy steel
Category Type Steel grade Standard Country
Grades Special Alloy 50 GBT China

Chemical composition % of the ladle analysis of grade 50

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Cu(%)
0.47-0.55 0.17-0.37 0.50-0.80 0.035 0.035 0.25 0.3 0.25
50
Mechanical properties of grade 50
Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
953 (≥) 864 (≥) 21 14 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
Physical properties of grade 50
Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
841 (≥) 643 (≥) 44 31 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 133
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
591 972 712
50 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
G2500 GBT China
Used in the products of the automobile, truck, tractor, and allied industries; small cylinder blocks, cylinder heads, air cooled cylinders, pistons, clutch plates, oil pump bodies, transmission cases, gear boxes, clutch housings, and light-duty brake drum
G2500a GBT China
Used in the products of the automobile, truck, tractor, and allied industries
G3500 GBT China
Used in the products of the automobile, truck, tractor, and allied industries
G3500b GBT China
Diesel engine cylinder block, truck and tractor cylinder block and cylinder head, flywheel, tractor transmission case and heavy-load gear box
G3500c GBT China
Used in the products of the automobile, truck, tractor, and allied industries
S20501 GBT China
Stainless steel and heat resistant steel
S21500 GBT China
Austenitic Chromium Manganese Nickel Molybdenum Stainless Steel
S47450 GBT China
Steels of blade for steam turbine
S47670 GBT China
Steels of blade for steam turbine
A 240 S30500 GBT China
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 249 S30500 GBT China
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
A 276 S30500 GBT China
Stainless Steel Bars and Shapes
A 313 S30500 GBT China
Stainless Steel Spring Wire
A 314 S30500 GBT China
Stainless Steel Billets and Bars for Forging
A 368 S30500 GBT China
Stainless Steel Wire Strand
A 473 S30500 GBT China
Stainless Steel Forgings
A 478 S30500 GBT China
Chromium-Nickel Stainless Steel Weaving and Knitting Wire
A 492 S30500 GBT China
Stainless Steel Rope Wire
A 493 S30500 GBT China
Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging
A 580 S30500 GBT China
Stainless Steel Wire

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50 Equivalent Grade Stock

Steel grade Dimension Shape Unit Quantity Delivery state Query
15-5PH Forgrd Flat Bar Select 0 Select Enquiry

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