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.