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50Application:China structural steel and alloy steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy 50GBTChina

Chemical composition%of the ladle analysis of grade50

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)Cu(%)
0.47-0.550.17-0.370.50-0.800.0350.0350.250.30.25
50
Mechanical properties of grade50
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 ConditionBrinell hardness(HBW)
337(≥)831(≥)114223Solution and Aging,Annealing,Ausaging,Q+T,etc324
Physical properties of grade50
PropertyDensity
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
154(≥)649(≥)421142Solution and Aging,Annealing,Ausaging,Q+T,etc331
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
961638879
50Range of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
G2500GBTChina
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
G2500aGBTChina
Used in the products of the automobile, truck, tractor, and allied industries
G3500GBTChina
Used in the products of the automobile, truck, tractor, and allied industries
G3500bGBTChina
Diesel engine cylinder block, truck and tractor cylinder block and cylinder head, flywheel, tractor transmission case and heavy-load gear box
G3500cGBTChina
Used in the products of the automobile, truck, tractor, and allied industries
S20501GBTChina
Stainless steel and heat resistant steel
S21500GBTChina
Austenitic Chromium Manganese Nickel Molybdenum Stainless Steel
S47450GBTChina
Steels of blade for steam turbine
S47670GBTChina
Steels of blade for steam turbine
A 240 S30500GBTChina
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 249 S30500GBTChina
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
A 276 S30500GBTChina
Stainless Steel Bars and Shapes
A 313 S30500GBTChina
Stainless Steel Spring Wire
A 314 S30500GBTChina
Stainless Steel Billets and Bars for Forging
A 368 S30500GBTChina
Stainless Steel Wire Strand
A 473 S30500GBTChina
Stainless Steel Forgings
A 478 S30500GBTChina
Chromium-Nickel Stainless Steel Weaving and Knitting Wire
A 492 S30500GBTChina
Stainless Steel Rope Wire
A 493 S30500GBTChina
Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging
A 580 S30500GBTChina
Stainless Steel Wire

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