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20g

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09MnNiDR 22Mng
#20g

Description

China GBT 20g China structural steel and alloy steel and 20g Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 20g
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 20g GBT China China structural steel and alloy steel
15MnVNR
15MnVNR
18MnMoNbR
13MnNiMoNbR
13MnNiMoNbR
15CrMoR
16MnDR
15MnNiDR
09Mn2VDR
09MnNiDR

Chemical composition(mass fraction)(wt.%) of the 20g

C(％) Si(％) Mn(％) P(％) S(％)
Max 0.20 0.15-0.30 0.50-0.90 0.035 0.035

Mechanical Properties of steel grade 20g

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
588 (≥) 858 (≥) 42 44 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade 20g

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
23 - -     0.22 -  
492 561 - 11.3 313   -  
134 - 34 41.2   243 313

Heat Treatment of steel grade 20g

Heat treated : 1117°C - 1564°C

Technological Curves of steel grade 20g

Cross Reference Table (Equivalent Grade) of 20g

Grade Standard Country Application
20g GBT China China structural steel and alloy steel
20G GBT China China structural steel and alloy steel
EN S320GP EN Euronorm Euronorm Structural steel
ZG280-520G③,④ GBT China Steel castings for pressure purposes
09MnNiDR 22Mng
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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