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1.4731

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X40CrSiMo10-2 1.4718
#1.4731

Description

France AFNOR 1.4731 Valve Internal Combustion Engines steel (NF-EN 1009-1998) and 1.4731 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Valve Steel: 1.4731
Category Type Steel Grade Standard Country Application
Steel GradesValve Steel 1.4731 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
Z53CMNNb21-09-02Az
Z53CMNS21-09Az
Z55CMN20-08Az
Z60CMDVNb21-10Az
Z80CNS20-02
Z85CDV18-02
NC15Fe7TA
NC20TA
X45CrSi9-3
X40CrSiMo10-2

Chemical composition(mass fraction)(wt.%) of the 1.4731

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％)
0.35-0.45 2.00-3.00 Max 0.80 Max 0.040 Max 0.030 9.50-11.5 Max 0.50 0.80-1.30

Mechanical Properties of steel grade 1.4731

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)
254 (≥) 741 (≥) 44 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade 1.4731

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
43 - -     0.34 -  
955 381 - 12.3 131   -  
384 - 23 42.2   433 213

Heat Treatment of steel grade 1.4731

Heat treated : 1544°C - 1688°C

Technological Curves of steel grade 1.4731

Cross Reference Table (Equivalent Grade) of 1.4731

Grade Standard Country Application
1.4731 DIN Germany Valve steel
1.4731 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
X40CrSiMo10-2 1.4718
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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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