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8Cr20Si2Ni

Favorite Datasheet
4Cr10Si2Mo 1Cr11MoV
#8Cr20Si2Ni

Description

China GB GB/T 1221 (1992) , GB/T 12773 (1991) , 8Cr20Si2Ni Specialsteel Heat-resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 8Cr20Si2Ni
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 8Cr20Si2Ni Martensite GB China Heat-resisting steel bars

Chemical composition(mass fraction)(wt.%) of the 8Cr20Si2Ni

C Si Mn P S Ni Cr
0.75 -0.85 1.75 -2.25 0.20 -0.60 ≤0.035 ≤0.030 1.15 -1.65 19.00 -20.50

Mechanical Properties of steel grade 8Cr20Si2Ni

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)
527 (≥) 435 (≥) 33 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade 8Cr20Si2Ni

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
41 - -     0.44 -  
912 188 - 14.3 412   -  
433 - 34 12.2   411 423

Heat Treatment of steel grade 8Cr20Si2Ni

Heat treated : 1736°C - 1227°C

Technological Curves of steel grade 8Cr20Si2Ni

Relevant standard of 8Cr20Si2Ni

GB/T 1221 (1992) Heat-resisting steel bars GB-T-1221--(1992)-.pdf
GB/T 12773 (1991) Valve steel bars for internal combustion engines - Technical requirements GB-T-12773--(1991)-.pdf
4Cr10Si2Mo 1Cr11MoV
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