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GB 85Application:China structural steel and alloy steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy GB 85GBTChina

Chemical composition%of the ladle analysis of gradeGB 85

C(％)Si(％)Mn(％)P(％)S(％)Cr(％)Ni(％)
0.82-0.900.17-0.370.50-0.800.0350.035Max 0.25Max 0.25
85
Mechanical properties of gradeGB 85
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)
641(≥)645(≥)342214Solution and Aging,Annealing,Ausaging,Q+T,etc111
Physical properties of gradeGB 85
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
286(≥)297(≥)241211Solution and Aging,Annealing,Ausaging,Q+T,etc321
Temp.
°C/°F		Creep strain limit
(10000h)
(Rp1,0)N/mm2		Creep rupture strength
(10000h)
(Rp1,0)N/mm2
485647746
GB 85Range 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
S38500GBTChina
Austenitic Chromium Nickel Stainless Steel (Low Work Hardening)
A 213 S30615GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
A 240 S30615GBTChina
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 249 S30615GBTChina
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
A 312 S30615GBTChina
Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
A 959 S30615GBTChina
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
S30615GBTChina
Austenitic Chromium Nickel Silicon Heat Resisting Steel
SA-213 S30615GBTChina
Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
SA-240 S30615GBTChina
Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
SA-249 S30615GBTChina
Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
SA-312 S30615GBTChina
Specification for Seamless and Welded Austenitic Stainless Steel Pipes
34CrAlNi7GBTChina
Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels,
1.8550GBTChina
Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels,
V820GBTChina
Al-alloyed nitriding steel grade for large cross-sections. Suitable for piston rods, extruders, cylinders, gear wheels,
X6NiCrSiNCe35-25GBTChina
Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
1.4854GBTChina
Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
NiCr22Mo9NbGBTChina
Heat resisting steels and nickel alloys
2.4856GBTChina
Heat resisting steels and nickel alloys
NiCr23FeGBTChina
Heat resisting steels and nickel alloys
2.4851GBTChina
Heat resisting steels and nickel alloys

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