X45CrSi9-3 1.4718 - NF EN 10090-1998

Grade	X45CrSi9-3
	1.4718
Corresponding Standard	NF EN 10090-1998 Valve steels and alloys for internal combustion engines
Classification	Martensitic Stainless Steel
Density	7.7 g/cm³

X45CrSi9-3 Chemical Element Composition Content (%)

Component	C	Si	Mn ^①	P	S	Cr	Ni
Minimum Value	0.4	2.7	-	-	-	8	-
Maximum Value	0.5	3.3	0.6	0.04	0.03	10	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 .

X45CrSi9-3 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:	+A					HB：≤ 300
Steel: d≤40	+QT ①	900 to 1100	700 ②	14 ②	40 ②	HB：266 to 325

◎ 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.

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!