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2.4955

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NiFe25Cr20NbTi Fe-Ni36
#2.4955

Description

France AFNOR 2.4955 Valve Internal Combustion Engines steel (NF-EN 1009-1998) and 2.4955 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Valve Steel: 2.4955
Category Type Steel Grade Standard Country Application
Steel GradesValve Steel 2.4955 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
1.4875
X50CrMnNiNbN21-9
1.4882
X53CrMnNiNbN21-9
1.4870
X85CrMoV18-2
1.4748
NiCr20TiAI
2.4952
NiFe25Cr20NbTi

Chemical composition(mass fraction)(wt.%) of the 2.4955

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) B(%) Nb(%) Al(%) Ti(%) Other(%)
0.04-0.10 Max 1.00 Max 1.00 Max 0.030 Max 0.015 18.0-21.0 Remain Max 0.008 Nb+Ta 1.0-2.0 0.30-1.00 1.0-2.0 Fe 23.0-28.0

Mechanical Properties of steel grade 2.4955

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)
974 (≥) 595 (≥) 13 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade 2.4955

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
13 - -     0.44 -  
933 416 - 44.3 411   -  
183 - 42 41.2   233 111

Heat Treatment of steel grade 2.4955

Heat treated : 1382°C - 1334°C

Technological Curves of steel grade 2.4955

Cross Reference Table (Equivalent Grade) of 2.4955

Grade Standard Country Application
2.4955 FED Germany Valve steel
2.4955 AFNOR France Valve Internal Combustion Engines steel (NF-EN 1009-1998)
NiFe25Cr20NbTi Fe-Ni36
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Jiangyou Longhai Special Steel Co.,Ltd.

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