NiFe 25 Cr 20 NbTi - ISO 683-15-1992

Grade	NiFe 25 Cr 20 NbTi
Corresponding Standard	ISO 683-15-1992 Valve steels for internal combustion engines
Classification	Alloy Steel

NiFe 25 Cr 20 NbTi Chemical Element Composition Content (%)

Component	Fe	C	Si	Mn	P	S	Cr	Ti	B	Al	More
Minimum Value	23	-	-	-	-	-	18	1	-	0.3	Nb+Ta：1.0~2.0；Ni余量
Maximum Value	28	0.1	1	1	0.03	0.015	21	2	0.008	1	Nb+Ta：1.0~2.0；Ni余量

NiFe 25 Cr 20 NbTi Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Solution Treatment (ST) + Precipitation Hardening (P)	900~1100	≥500	≥25	≥30	HRC ≥28

NiFe25Cr20NbTi Corresponding Standards(Same grade name, different standards)

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