X8Ni9

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Korea KS X8Ni9 Steel forgings and rolled or forged bars for pressure purposes-Technical delivery conditions-Part 3:Nickel steels with specified low temperature properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X8Ni9 / X8Ni9

Category	Grade	Standard	Region/Area	Standard Content
Metals	X8Ni9	KS D ISO 9327-3	Korea	Steel forgings and rolled or forged bars for pressure purposes-Technical delivery conditions-Part 3:Nickel steels with specified low temperature properties

Chemical composition(mass fraction)(wt.%) of the X8Ni9

Element	Min	Max	Similar
C	-	0.1000	-
Mn	0.3000	0.8000	-
P	-	0.0250	-
S	-	0.0200	-
Si	-	0.3500	-
Ni	8.0000	10.0000	-
Mo	-	0.1000	-
V	-	0.0500	-

Mechanical Properties of steel grade X8Ni9

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
117 (≥)	146 (≥)	32	32	33	Solution and Aging, Annealing, Ausaging, Q+T,etc	322

Physical Properties of steel grade X8Ni9

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
42	-	-			0.34	-
749	797	-	42.3	413		-
452	-	21	13.2			333	133

Heat Treatment of steel grade X8Ni9

Heat treated : 1651°C - 1271°C

Technological Curves of steel grade X8Ni9

No Curve

Cross Reference Table (Equivalent Grade) of X8Ni9

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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