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Description

France AFNOR NF EN 10090, 1.4718 Specialsteel Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 1.4718
Category Class Grade Standard Country Application
Steel GradesSpecialsteel 1.4718 AFNOR France Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the 1.4718

C Si Mn P S Cr Ni Mo
0.40 -0.50 2.70 -3.30 ≤0.60 ≤0.040 ≤0.030 8.00 -10.00 ≤0.50 ≤ ≥

Mechanical Properties of steel grade 1.4718

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)
242 (≥) 237 (≥) 14 33 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade 1.4718

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
32 - -     0.12 -  
316 734 - 44.3 413   -  
481 - 12 14.2   234 433

Heat Treatment of steel grade 1.4718

Heat treated : 1169°C - 1434°C

Technological Curves of steel grade 1.4718

Cross Reference Table (Equivalent Grade) of 1.4718

Grade Standard Country Application
X45CrSi9-3

Relevant standard of 1.4718

NF EN 10090 Valve steels and alloys for internal combustion engines NF-EN-10090.pdf

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