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ISO 683-9-1988
Heat-treatable steels,alloy steels and free-cutting steels-Part 9:Wrought free-cutting steels
Material Designation Chemical Composition (%)
10SPb20 (4Pb)
Min
Max
11SMnPb28 (2Pb)
Min
Max
9S20 (1)
Min
Max
10S20 (4)
Min
Max
11SMn28 (2)
Min
Max
17SMn20 (6)
Min
Max
35S20 (7)
Min
Max
35SMn20 (8)
Min
Max
44SMn28
Min
Max
46S20 (10)
Min
Max
12SMn35 (3)
Min
Max
12SMnPb35 (3Pb)
Min
Max
For Reference Only