X8Ni9 1.5662 - EN 10028-4-2017

Grade	X8Ni9
European Standard Steel Grade	1.5662
Corresponding Standard	EN 10028-4-2017 Flat Products Made of Steels for Pressure Purposes - Part Four: Nickel Alloy Steels with Specified Low Temperature Properties
Classification	Alloy Steel

X8Ni9 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Ni	Mo	V	More
Minimum Value	-	-	0.3	-	-	8.5	-	-	Cr+Cu+Mo≤0.50
Maximum Value	0.1	0.35	0.8	0.02	0.005	10	0.1	0.05	Cr+Cu+Mo≤0.50

X8Ni9 Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
t≤30	Normalizing (+N) + Normalizing and tempering (+NT)	640~840	ReH ≥490	≥18
30＜t≤50	Normalizing (+N) + Normalizing and tempering (+NT)	640~840	ReH ≥480	≥18
t≤30	Qenching + tempering (+QT)	640~840	ReH ≥490	≥18
30＜t≤125	Qenching + tempering (+QT)	640~840	ReH ≥480	≥18
t≤30	Qenching + tempering (+QT)	680~820	ReH ≥585	≥18
30＜t≤125	Qenching + tempering (+QT)	680~820	ReH ≥575	≥18

Approximate Comparison Table Pressure-Bearing Flat Steel

China	Japan	United States	International Organization for Standardization	European Standard
GB	JIS	ASTM	ISO	EN
06Ni9DR GB/T 713.4-2023	SL9N590 JIS G 3127-2021	9%Ni ASTM A533/A533M-17	X7Ni9 ISO 9328-4-2018	X8Ni9 X7Ni9 EN 10028-4-2017

X8Ni9 Corresponding Standards(Same grade name, different standards)

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