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Free cutting steel Equivalent Grade

China
GB,YB
Japan
JIS
Germany
DIN(W-Nr.)
USA UK
BS
French
NF
GOST
ГОСТ
ISO
ISO
ASTM AISI SAE
Y12 SUM12   1109 1109 1109   10F2 A12  
Y15   10S20(1.0721) 1119 1119 1119 220M07      
                   
Y20 SUM32 22S20(1.0724)         20F2 A20  
Y30   35S20(1.0726)           A30  
Y40Mn     1139 1139 1139 225M36 45MF4 A40Г  
  SUM21   1212 1212,
1112
1212       R683/Ⅸ1
  SUM22   1213 1213,
1113
1213       R683/Ⅸ
  SUM22L   12L13   12L13       R683/Ⅸ2Pb
  SUM23       1215        
  SUM24L   12L14 12L14 12L14        
  SUM31   1117 1117 1117        
  SUM41   1137 1137 1137        
  SUM42   1141 1141 1141        
  SUM43   1144 1144   225M44 45MF4    


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