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 / EN8D | 080A40 | CK45 | 45C8 | EN8D | 1040, 1045 | - |
| EN9 | 070M55 | CK55 | C55 | EN9 | 1055 | - |
| EN32B | - | CK15 | C14 | EN32B | 1015, 1018 | - |
| EN42 | - | CK75 | 80C6 | EN42 | 1074 | - |
| EN43B | 080A47 | CK45 | - | EN43B | 1045 | - |
| SAE 1018 | - | CK15 | C15Mn75 | EN32B, EN32C | SAE1018 | - |
| SAE 1541 | 150M36 | 36Mn7 | 37C15 | EN15, EN15A | SAE1541 | SMn438 |
| CK45 | - | CK45 | 45C8 | - | 1045 | S45C |
| EN18 | 530A40 | 37Cr4 | 40Cr1 | EN18 | 5140 | - |
| EN19 / EN19C | 709M40 | 42Cr4Mo2 | 40Cr4Mo3 | EN19 | 4140, 4142 | SCM440 |
| EN24 | 817M40 | 34CrNiMo6 | 40NiCr4Mo3 | EN24 | 4340 | - |
| EN353 | 815M17 | - | 15NiCr1Mo12 | EN353 | - | - |
| 16MnCr5 | - | 16MnCr5 | 17Mn1Cr95 | - | 5120 | - |
| 20MnCr5 | - | 20MnCr5 | 20MnCr1 | - | - | - |
| SAE 8620 | 805M20 | 20NiCrMo2 | - | EN362 | SAE8620 | - |
| SCM420 | 708M20 | - | - | - | 4120 | - |
| EN31 / SAE 52100 | 534A99 | 100Cr6 | 103Cr1 | EN31 | SAE52100 | SUJ2 |
| EN45 / EN45A | 250A53 | 55Si7 | 55Si2Mn90 | EN45/A | 9255, 9260 | - |
| 50CrV4 / EN47 | 735A51 | 50CrV4 | 50Cr4V2 | EN47 | 6150 | SUP10 |
| SAE 9254 | - | - | - | - | 9254 | SUP12V |
| EN1A | 220M07 | 9SMn28 | 11C10S25 | EN1A | 1213 | SUM22 |
| EN1A-Pb | 220Mo7Pb | 9SMnPb36 | - | EN1A-Pb | 12L14 | SUM24L |
| EN8M | 212M36 | - | 40C10S18 | EN8M | 1I46 | - |
| 10B21 | - | - | 21C10BT | - | 10B21 | - |
| 15B25 | - | - | 26C10BT | - | 15B25 | - |
| 15B41 | - | - | - | - | 15B41 | - |