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20Application:China structural steel and alloy steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy 20GBTChina

Chemical composition%of the ladle analysis of grade20

C(％)Si(％)Mn(％)P(％)S(％)
0.07-0.240.17-0.370.35-0.650.030.03
20
Mechanical properties of grade20
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)
752(≥)899(≥)234324Solution and Aging,Annealing,Ausaging,Q+T,etc332
Physical properties of grade20
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
391(≥)526(≥)224124Solution and Aging,Annealing,Ausaging,Q+T,etc333
Temp.
°C/°F		Creep strain limit
(10000h)
(Rp1,0)N/mm2		Creep rupture strength
(10000h)
(Rp1,0)N/mm2
715712546
20Range 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
201GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
SA 201GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
S20100GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
201LGBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
S20103GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
2Cr25Ni20GBTChina
Seamless stainless steel tubes for boiler and heat exchanger
2Cr20Mn9Ni2Si2NGBTChina
Heat-resisting steel bars
1Cr20Ni14Si2GBTChina
Heat-resisting steel sheets and plates
1Cr25Ni20Si2GBTChina
Heat-resisting steel sheets and plates
8Cr20Si2NiGBTChina
Heat-resisting steel bars
GH2018GBTChina
Classification and designation for superalloys and high temperature intermetallic materials
GH2036GBTChina
Classification and designation for superalloys and high temperature intermetallic materials
GH2038GBTChina
Classification and designation for superalloys and high temperature intermetallic materials
GH4220GBTChina
Nickel-base superalloy
201GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
ASTM 201GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
T201LNGBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
S20153GBTChina
Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
S20161GBTChina
Austenitic Chromium Manganese Nickel Silicon Stainless Steel

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