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G20

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M78 G30
#M82

Description

France AFNOR G20 Carbide for cutting tools and G20 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: G20
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy G20 AFNOR France Carbide for cutting tools
G1Z
G1Z
H10
H10
H20
H20
M51
M51
M78
M78

Chemical composition(mass fraction)(wt.%) of the G20

Mechanical Properties of steel grade G20

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)
725 (≥) 624 (≥) 13 14 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical Properties of steel grade G20

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
32 - -     0.21 -  
766 361 - 23.3 144   -  
487 - 32 41.2   333 424

Heat Treatment of steel grade G20

Heat treated : 1945°C - 1574°C

Technological Curves of steel grade G20

Cross Reference Table (Equivalent Grade) of G20

Grade Standard Country Application
M82 AFNOR France Carbide for cutting tools
M82 AFNOR France Carbide for cutting tools
G20 AFNOR France Carbide for cutting tools
SCM822H CNS China China Taiwan Structural steel
SCM822 CNS China China Taiwan Structural steel
M78 G30
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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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