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K20

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K10 K30
#K20

Description

Japan JIS K20 Carbide for cutting tools and K20 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: K20
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy K20 JIS Japan Carbide for cutting tools
P10
P30
P40
BW1A
M10
M20
M30
M40
K01
K10

Chemical composition(mass fraction)(wt.%) of the K20

W(%) Co(%) Other(%)
92-95 5-8 Ti,Ta(Nb)(%): 0-3

Mechanical Properties of steel grade K20

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)
362 (≥) 663 (≥) 34 34 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade K20

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 - -     0.33 -  
127 722 - 31.3 223   -  
646 - 21 14.2   342 432

Heat Treatment of steel grade K20

Heat treated : 1631°C - 1555°C

Technological Curves of steel grade K20

Cross Reference Table (Equivalent Grade) of K20

Grade Standard Country Application
K20 JIS Japan Carbide for cutting tools
ASTM CK20 AISI USA
K202 GBT China conventional cast superalloy
CK20 ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
CK20 ASTM USA Steel Castings, Iron-Chromium and Iron-Chromium-Nickel,Heat Resistant, for General Application
K10 K30
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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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