X7CrNiNb18-10 H12 - ISO 4955-1994

Grade	X7CrNiNb18-10
Old Grade
Corresponding Standard	ISO 4955-1994 Heat-Resistant Steels and Alloy
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance

X7CrNiNb18-10 Chemical Element Composition Content (%)

Component	C ^①	Si	Mn	P	S	Cr	Ni	More
Minimum Value	-	-	-	-	-	17	9	Nb: 10×C%≤1.2②
Maximum Value	0.1	1	2	0.045	0.03	19	12	Nb: 10×C%≤1.2②

① A minimum of 0,04 % C shall also apply.
② Ta determined as Nb

New and Old Grade Replacement List

Corresponding Standard	Grade
ISO 4955-1994	Grade Old Grade
ISO 4955-2005	Grade
ISO 4955-2016	Grade ISO Numeric Designation

Approximate Comparison Table Austenitic Stainless Steel

China		Japan	United States		International Organization for Standardization		France	European Standard
GB	ISC	JIS	ASTM/AISI	UNS	ISO	Numerical Grade	NF EN/NF	EN	Numerical Grade
07Cr18Ni11Nb (1Cr19Ni11Nb)	S34779	SUS347H	347H	S34709	X7CrNiNb18-10	4912-347-09-I	Z2CND17-11 Z2CND18-13 Z8CNNb18-10	X7CrNiNb18-10	1.4912

X7CrNiNb18-10 Corresponding Standards(Same grade name, different standards)

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