Special use steel
|
Type |
International |
USA |
Japan |
|
ISO |
AISI ATM |
JIS |
|
|
Free cutting carbon steels |
- |
1110 |
SUM11 |
|
- |
1109 |
SUM12 |
|
|
9S20 |
1212 |
SUM21 |
|
|
11SMn28 |
1213 |
SUM22 |
|
|
11SMnPb28 |
- |
SUM22L |
|
|
- |
1215 |
SUM23 |
|
|
- |
- |
SUM23L |
|
|
11SMnPb28 |
12L14 |
SUM24L |
|
|
12SMn35 |
- |
SUM25 |
|
|
- |
1117 |
SUM31 |
|
|
- |
- |
SUM31L |
|
|
- |
- |
SUM32 |
|
|
- |
1137 |
SUM41 |
|
|
- |
1141 |
SUM42 |
|
|
44SMn28 |
1144 |
SUM43 |
|
|
High carbon chromium steel |
- |
- |
SUJ1 |
|
B1 |
52100 |
SUJ2 |
|
|
B2 |
ASTM A |
SUJ3 |
|
|
- |
485 |
- |
|
|
- |
Grade 1 |
- |
|
|
- |
- |
SUJ4 |
|
|
- |
- |
SUJ5 |
Note: The above chart is based on published data and not authorized by each manufacturer.