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Description

China GBT 9Cr18Mo Martensitic Steel and 9Cr18Mo Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Steel: 9Cr18Mo
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Steel 9Cr18Mo GBT China Martensitic Steel
3Cr13
Y3Cr13
3Cr13Mo
4Cr13
1Cr17Ni2
7Cr17
8Cr17
9Cr18
11Cr17
Y11Cr17

Chemical composition(mass fraction)(wt.%) of the 9Cr18Mo

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%) Mo(%)
0.95-1.10 Max 0.80 Max 0.80 0.035 Max 0.03 16.00-18.00 Max 0.60 0.40-0.70

Mechanical Properties of steel grade 9Cr18Mo

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)
558 (≥) 331 (≥) 43 21 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade 9Cr18Mo

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 - -     0.43 -  
326 347 - 24.3 334   -  
235 - 32 31.2   144 243

Heat Treatment of steel grade 9Cr18Mo

Heat treated : 1126°C - 1789°C

Technological Curves of steel grade 9Cr18Mo

Cross Reference Table (Equivalent Grade) of 9Cr18Mo

Grade Standard Country Application
(G)9Cr18Mo GBT China China structural steel and alloy steel
9Cr18Mo GBT China Martensitic Steel
9Cr18MoV GBT China Martensitic Steel

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