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1.4718

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X45CrSi9-3 X40CrSiMo10-2
#X45CrSi9-3 #1-4718

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)
434 (≥) 232 (≥) 31 43 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

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
34 - -     0.41 -  
111 474 - 22.3 423   -  
574 - 43 32.2   321 323

Heat Treatment of steel grade 1.4718

Heat treated : 1491°C - 1263°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
X45CrSi9-3 X40CrSiMo10-2
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