X15CrNiSi25-21 H16 - ISO 4955-1994

Grade	X15CrNiSi25-21
Old Grade
Corresponding Standard	ISO 4955-1994 Heat-Resistant Steels and Alloy
Classification	Austenitic Stainless Steel
Properties	Corrosion Resistance

X15CrNiSi25-21 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni
Minimum Value	-	1.5	-	-	-	24	19
Maximum Value	0.2	2.5	2	0.045	0.03	26	22

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 Heat-Resistant Steel

China		United States	International Organization for Standardization	Germany		France	European Standard		Russia	United Kingdom
GB	ISC	UNS	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
16Cr25Ni20Si2 (1Cr25Ni20Si2)	S38340	S31400	X15CrNiSi 25-21	X15CrNiSi 25-20	1.4841	Z15CNS 25-20	X15CrNiSi 25-21	1.4841	20Х25Н20С2	310S24

X15CrNiSi25-21 Corresponding Standards(Same grade name, different standards)

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