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8Cr20Si2Ni

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4Cr10Si2Mo 1.2332
#8Cr20Si2Ni

Description

China GBT 8Cr20Si2Ni Chinese GB standard of internal combustion engine valve steel bar (GB/T 12773-1991) and 8Cr20Si2Ni Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: 8Cr20Si2Ni
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel 8Cr20Si2Ni GBT China Chinese GB standard of internal combustion engine valve steel bar (GB/T 12773-1991)
11Cr17
Y11Cr17
9Cr18Mo
9Cr18MoV
3Cr16
0Cr17Ni4Cu4Nb
0Cr17Ni7Al
0Cr15Ni7Mo2Al
4Cr9Si2
4Cr10Si2Mo

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

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
0.75-0.85 1.75-2.25 0.20-0.60 0.03 0.03 19.0-20.5 1.15-1.65

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)
698 (≥) 276 (≥) 22 34 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

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
42 - -     0.33 -  
398 555 - 11.3 131   -  
765 - 43 41.2   124 424

Heat Treatment of steel grade 8Cr20Si2Ni

Heat treated : 1713°C - 1199°C

Technological Curves of steel grade 8Cr20Si2Ni

Cross Reference Table (Equivalent Grade) of 8Cr20Si2Ni

Grade Standard Country Application
8Cr20Si2Ni GBT China Chinese GB standard of internal combustion engine valve steel bar (GB/T 12773-1991)
4Cr10Si2Mo 1.2332
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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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