International Grade Equivalents

The Definitive Translation for Engineering Steels.

Navigating the complex world of international steel standards can be a major source of confusion and risk. Is the EN grade specified in a European design the same as the SAE grade you're familiar with? This comprehensive, searchable chart is designed to provide instant clarity, helping you compare and identify equivalent grades across the world's most common standards.

Primary Designation BS DIN IS EN SAE/AISI JIS
EN8 / EN8D080A40CK4545C8EN8D1040, 1045-
EN9070M55CK55C55EN91055-
EN32B-CK15C14EN32B1015, 1018-
EN42-CK7580C6EN421074-
EN43B080A47CK45-EN43B1045-
SAE 1018-CK15C15Mn75EN32B, EN32CSAE1018-
SAE 1541150M3636Mn737C15EN15, EN15ASAE1541SMn438
CK45-CK4545C8-1045S45C
EN18530A4037Cr440Cr1EN185140-
EN19 / EN19C709M4042Cr4Mo240Cr4Mo3EN194140, 4142SCM440
EN24817M4034CrNiMo640NiCr4Mo3EN244340-
EN353815M17-15NiCr1Mo12EN353--
16MnCr5-16MnCr517Mn1Cr95-5120-
20MnCr5-20MnCr520MnCr1---
SAE 8620805M2020NiCrMo2-EN362SAE8620-
SCM420708M20---4120-
EN31 / SAE 52100534A99100Cr6103Cr1EN31SAE52100SUJ2
EN45 / EN45A250A5355Si755Si2Mn90EN45/A9255, 9260-
50CrV4 / EN47735A5150CrV450Cr4V2EN476150SUP10
SAE 9254----9254SUP12V
EN1A220M079SMn2811C10S25EN1A1213SUM22
EN1A-Pb220Mo7Pb9SMnPb36-EN1A-Pb12L14SUM24L
EN8M212M36-40C10S18EN8M1I46-
10B21--21C10BT-10B21-
15B25--26C10BT-15B25-
15B41----15B41-