Internal Standard 
EN15B
EN32B
SAE1038
EN43C
CK45
EN9
C35
EN42
EN42B
EN43
EN43B
SAE1541
EN8
EN8A
EN8B
EN8C
EN8D
EN9
Equivalent Grades
BS
150M36
-
-
-
-
070M55
-
-
-
080M50
080A47
150M36
080A40
080A40
080A40
080A40
080A40
070M55
 
DIN
36Mn5
CK15
CK38
-
CK45
CK55
C35
CK75
C67
C55
CK45
36Mn7
CK45
CK45
CK45
CK45
CK45
C55
 
IS
37Mn2, 37C15
C14
-
C50
45C8
C55
35C8, C35Mn75
80C6
65C6
60C6
-
37C15
45C8
45C8
45C8
45C8
45C8
C55
 
EN
EN15B
EN32B
-
EN43C
1045
EN9
-
EN42
EN42B
EN43
EN43B
EN15,15A
EN8
EN8A
45C8
EN8C
EN8D
EN9
 
SAE/AISI
1536
1015,1016,1018
1038
1050
-
1055
1035
1074
1065
1055
1045
SAE1541
1040,1045
1040,1045
1040,1045
1040,1045
1040,1045
1055
 
JIS
-
-
-
-
-
-
-
-
-
-
-
SMn438
-
-
-
-
-
-