Grade NiFe25Cr20NbTi
2.4955
Corresponding Standard NF EN 10090-1998
Valve steels and alloys for internal combustion engines
Classification Nickel and Nickel Alloys
Density 8.1 g/cm3
NiFe25Cr20NbTi Chemical Element Composition Content (%)
Component Fe C Si Mn P S Cr Ti B Al More
Minimum Value 23 0.04 - - - - 18 1 - 0.3 Ni:余量 Nb+Ta:1~2
Maximum Value 28 0.1 1 1 0.03 0.015 21 2 0.008 1
◎ Elements not listed in this table shall not be intentionally added to the steel without the agreement of the purchaser, excpet for finishing the cast. All appropriate measures shall be taken to prevent the addition of these elements from scrap or other materials used in steelmaking ,which may adversely affect the mechanical properties and usability .
NiFe25Cr20NbTi Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa
Yield Point
σs
Mpa
Elongation or Extension Rate
δ
%
Reduction of Area
ψ
%
Hardness
HBW
Steel: +Q930~1030 ≤1000 HB: ≤ 295
Steel: d≤40 +AT+P 900 to 1100 500 ① 25 ① 30 ① HRC:28 ①
◎ d=thickness;+A=soft annealed;+Q=quenched;+P=precipitation hardened;+AT=solution annealed;+QT=quenched and tempered;The suffix number after the heat treatment symbol indicates the temperature in °C.
NiFe25Cr20NbTi Corresponding Standards(Same grade name, different standards)

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