|
Internal Standard
|
Equivalent Grades
|
||||
|
BS
|
DIN
|
IS
|
EN
|
SAE/AISI
|
|
|
EN18
|
530A40
|
37Cr4
|
40Cr1
|
EN18
|
5140
|
|
EN24
|
817M40
|
34CrNiMo6
|
40NiCr4Mo3
|
EN24
|
4340
|
|
EN19C
|
709M40
|
-
|
40Cr4Mo3
|
EN19C
|
4140, 4142
|
|
EN19
|
709M40
|
-
|
40Cr4Mo3
|
EN19
|
4140, 4142
|
|
EN18D
|
530A40
|
37Cr4
|
40Cr1
|
EN18D
|
5140
|
|
EN18C
|
530A40
|
37Cr4
|
40Cr1
|
EN18C
|
5140
|
|
EN18A
|
530A40
|
37Cr4
|
40Cr1
|
EN18A
|
5140
|
|
27C15
|
-
|
28Mn6
|
27C15
|
-
|
1527
|
|
20MnCr5
|
-
|
20MnCr5
|
20MnCr1
|
-
|
-
|
|
20Mn2
|
150M28
|
-
|
20Mn2
|
EN14A
|
1524
|
|
16MnCr5
|
-
|
16MnCr5
|
17Mn1Cr95
|
-
|
5120
|
|
FILESTEEL
|
-
|
-
|
-
|
-
|
-
|
|
EN18B
|
530A40
|
37Cr4
|
40Cr1
|
EN18B
|
5140
|
|
SAE8620
|
805M20
|
-
|
20NiCrMo2
|
EN362
|
8620
|
|
SAE8622
|
805M20
|
-
|
20Ni2Cr2Mo2
|
-
|
8622
|
|
EN353 |
815M17
|
-
|
15NiCr1Mo12
|
EN353
|
-
|
|
EN354 |
820M17
|
-
|
15NIVCr1Mo15
|
EN354
|
4320
|
|
15Cr3
|
523A14
|
15Cr3
|
15Cr65
|
EN206
|
5015
|
|
EN24
|
817M40
|
34CrNiMo6
|
40NiCr4Mo3
|
EN24
|
4340
|
|
17Cr3
|
-
|
17Cr3
|
-
|
-
|
-
|
|
40Cr4
|
41Cr4
|
41Cr4
|
40Cr4
|
En18D
|
5140
|
|
34Cr4
|
34Cr4
|
34Cr4
|
-
|
En18
|
5130
|
| Carbon Steels | Alloy Steels | Free Cutting Steels |