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25Application:China structural steel and alloy steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy 25GBTChina

Chemical composition%of the ladle analysis of grade25

C(％)Si(％)Mn(％)P(％)S(％)Cr(％)Ni(％)Cu(%)
0.22-0.290.17-0.370.50-0.800.0350.0350.250.30.25
25
Mechanical properties of grade25
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)
348(≥)666(≥)234443Solution and Aging,Annealing,Ausaging,Q+T,etc431
Physical properties of grade25
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
116(≥)154(≥)322442Solution and Aging,Annealing,Ausaging,Q+T,etc444
Temp.
°C/°F		Creep strain limit
(10000h)
(Rp1,0)N/mm2		Creep rupture strength
(10000h)
(Rp1,0)N/mm2
742274111
25Range 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
0Cr25Ni20GBTChina
Oxidation resistance is better than 0cr23ni13. Mostly used as heat resistant steel
A-29 1025GBTChina
General use carbon steel rod
1025GBTChina
These products have been used typically for use in fabrication of fittings, but usage is not limited to such applications. These products are not typically used for deep forming or cupping operations.
G10250GBTChina
General use carbon steel rod
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
2Cr25Ni20GBTChina
Seamless stainless steel tubes for boiler and heat exchanger
0Cr15Ni25Ti2MoA1VBGBTChina
Heat-resisting steel sheets and plates
1Cr25Ni20Si2GBTChina
Heat-resisting steel sheets and plates
2Cr25NGBTChina
Heat-resisting steel sheets and plates
A 167 S31254GBTChina
Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip
A 213 S31254GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
A 240 S31254GBTChina
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
A 249 S31254GBTChina
Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
A 269 S31254GBTChina
Seamless and Welded Austenitic Stainless Steel Tubing for General Service
A 270 S31254GBTChina
Seamless and Welded Austenitic Stainless Steel Sanitary Tubing
A 276 S31254GBTChina
Stainless Steel Bars and Shapes
A 312 S31254GBTChina
Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
A 358 S31254GBTChina
Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications
A 167 S31725GBTChina
Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip

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