Home»Grades > Special Alloy > NiFe25Cr20NbTi
NiFe25Cr20NbTiApplication:Valve Internal Combustion Engines steel (NF-EN 1009-1998)
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy NiFe25Cr20NbTiAFNORFrance

Chemical composition%of the ladle analysis of gradeNiFe25Cr20NbTi

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Ni(%)B(%)Nb(%)Al(%)Ti(%)Other(%)
0.04-0.10Max 1.00Max 1.00Max 0.030Max 0.01518.0-21.0RemainMax 0.008Nb+Ta 1.0-2.00.30-1.001.0-2.0Fe 23.0-28.0
NiFe25Cr20NbTi
Mechanical properties of gradeNiFe25Cr20NbTi
Proof strength
Rp0.2(MPa)
Tensile strength
Rm(MPa)
Impact energy
KV(J)
Elongation at fracture
A(%)
Reduction in cross section on fracture
Z(%)
As-Heat-Treated ConditionBrinell hardness(HBW)
563(≥)445(≥)114222Solution and Aging,Annealing,Ausaging,Q+T,etc243
Physical properties of gradeNiFe25Cr20NbTi
PropertyDensity
kg/dm3
Temperature T
°C/F
Specific heat
J/kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
669(≥)686(≥)321232Solution and Aging,Annealing,Ausaging,Q+T,etc433
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
759512177
NiFe25Cr20NbTiRange of products
Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging,hot rolling and cold rollingAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Steel BarRound Bar,Flat Bar,Square BarΦ8-1200mm*LForging,hot rolling and cold rolling,CastBlack,Rough Turning,Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed,Solution and Aging,Q+T,ACID-WASHED,Shot Blasting
Pipes/TubesSeamless Pipes/Tubes,Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion,Cold Drawn,WeldedAnnealed,Solution and Aging,Q+T,ACID-WASHED
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
NiFe25Cr20NbTiAFNORFrance
Valve steels and alloys for internal combustion engines
2.4955AFNORFrance
Valve steels and alloys for internal combustion engines
NiFe25Cr20NbTiAFNORFrance
Heat-treatable steels, alloy steels and free-cutting steels -- Part 15: Valve steels for internal combustion engines

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