Internal Standard	IS	BS	BS970:1983	EN	DIN	SAE / AISI	JIS	GOST	AFNOR	ISO	UNI	SS	CSA	AS/NZS	GB / T
EN353	15NiCr1Mo12	815M17	655M17	EN353	17NiCrMo6	8620	SNCM220	20KhN3A	16NCD13	6832	20NiCrMo2	2520	G8620	8620H	20CrNiMo
EN354	15NiVCr1Mo15	820M17	655M17	EN354	18CrNiMo7-6	4320	SNCM420	18Kh2N4VA	18NCD5	6835	20NiCrMoS2	2720	G4320	4320H	20CrNi2Mo
EN355	15NiCr1Mo15	835M15	835M15	EN355	17CrNiMo6	9310	SNCM630	18KhGT	14NCD13	6836	18NiCrMo5	2730	G9310	9310H	20CrNiMoH
EN36 / A / B / C	16NiCr4, 16NiCrMo13	655M13	655M17	EN36 Series	17NiCrMo6	3310 / 9310	SNCM616	18KhGT	16NCD13	6834	16NiCrMo13	2630	G3310	9310H	17CrNiMo6
20MnCr5	20MnCr1	-	20MnCr5	-	20MnCr5	5120	SCr420H	20KhMnCr5	16MC5	6831	20MnCr5	2220	G5120	5120H	20CrMn
16MnCr5	17Mn1Cr95	-	16MnCr5	-	16MnCr5	5115	SCr415	15KhMnCr	15MC5	6830	16MnCr5	2215	G5115	5115H	16CrMn
15Cr3	15Cr65	523A14	523M15	EN206	15Cr3	5015	SCr415	15Kh	15CND6	6838	15Cr3	2315	G5015	5015H	15Cr

Note: Some grades may have minor differences in composition or heat treatment response. Always refer to detailed specifications before substitution. Standards like GOST or GB/T may include multiple variants (e.g., “A” or “H” suffixes) indicating heat-treated or hardened conditions.