X33CrNiMnN23-8 1.4866 - NF EN 10090-1998

Grade	X33CrNiMnN23-8
	1.4866
Corresponding Standard	NF EN 10090-1998 Valve steels and alloys for internal combustion engines
Classification	Austenitic Stainless Steel
Density	7.8 g/cm³

X33CrNiMnN23-8 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo	N	W
Minimum Value	0.28	0.5	1.5	-	-	22	7	-	0.25	-
Maximum Value	0.38	1	3.5	0.045	0.03	24	9	0.5	0.35	0.5

◎ 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 .

X33CrNiMnN23-8 Mechanical Properties

condition	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:	Controlled Cooling ①	≈ 1250				HB: ≈ 360
Steel:	+Q1000~1100 ②	≤1200				HB: ≤ 360
Steel: d≤40	+AT+P	850 to 1100	550 ③	20 ③	30 ③	HRC:25 ③④

◎ 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.

X33CrNiMnN23-8 Corresponding Standards(Same grade name, different standards)

1	EN 10090-1998
	X33CrNiMnN23-8 1.4866
2	NF EN 10090-1998
	X33CrNiMnN23-8 1.4866

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