X50CrMnNiNbN21-9 1.4882 - EN 10090-1998

Grade	X50CrMnNiNbN21-9
European Standard Steel Grade	1.4882
Corresponding Standard	EN 10090-1998 Valve steels and alloys for internal combustion engines
Classification	Alloy Steel
Properties	Corrosion Resistance

X50CrMnNiNbN21-9 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	N	W	More
Minimum Value	0.45	-	8	-	-	20	3.5	0.4	0.8	Nb+Ta:1.8~2.5
Maximum Value	0.55	0.45	10	0.045	0.03	22	5.5	0.6	1.5	Nb+Ta:1.8~2.5

X50CrMnNiNbN21-9 Mechanical Properties

condition	Test Temperature	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
Steel	Room Temperature	Controlled cooled	≈1300				≈385
Steel	Room Temperature	Quenched at 1000°C to 1100°C	≤1300				≤385
Steel d≤40	Room Temperature	+AT +P	950~1150	≥580	≥12	≥15	HRC≥30*
Steel		+AT +P	≥680	≥350
Steel			≥650	≥330
Steel			≥610	≥310
Steel			≥550	≥285
Steel			≥480	≥260
Steel			≥410	≥240
Steel			≥340	≥220

Approximate Comparison Table Austenitic Heat-Resistant Steel

China	International Organization for Standardization	European Standard
GB	ISO	EN	Numerical Grade
50Cr21Mn9Ni4Nb2WN	X50CrMnNiNbN 21-9	X50CrMnNiNbN 21-9	1.4882

X50CrMnNiNbN21-9 Corresponding Standards(Same grade name, different standards)

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