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4Cr9Si2

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0Cr15Ni7Mo2Al 4Cr10Si2Mo
#4Cr9Si2

Description

China GBT 4Cr9Si2 Chinese GB standard of internal combustion engine valve steel bar (GB/T 12773-1991) and 4Cr9Si2 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: 4Cr9Si2
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel 4Cr9Si2 GBT China Chinese GB standard of internal combustion engine valve steel bar (GB/T 12773-1991)
8Cr17
9Cr18
11Cr17
Y11Cr17
9Cr18Mo
9Cr18MoV
3Cr16
0Cr17Ni4Cu4Nb
0Cr17Ni7Al
0Cr15Ni7Mo2Al

Chemical composition(mass fraction)(wt.%) of the 4Cr9Si2

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
0.35-0.50 2.00-3.00 0.70 0.035 0.03 8.00-10.0 0.60

Mechanical Properties of steel grade 4Cr9Si2

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)
824 (≥) 579 (≥) 31 31 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade 4Cr9Si2

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
11 - -     0.13 -  
593 695 - 11.3 214   -  
272 - 44 21.2   113 234

Heat Treatment of steel grade 4Cr9Si2

Heat treated : 1948°C - 1754°C

Technological Curves of steel grade 4Cr9Si2

Cross Reference Table (Equivalent Grade) of 4Cr9Si2

Grade Standard Country Application
4Cr9Si2 GBT China Chinese GB standard of internal combustion engine valve steel bar (GB/T 12773-1991)
ZG40Cr9Si2(ZG4Cr9Si2) GBT China Large heat resistant steel castings
0Cr15Ni7Mo2Al 4Cr10Si2Mo
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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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