Free Cutting Steels

Size Range mm (diameter-width) 5- 80 15-70 12- 40 11SMnPb30 – (9SMnPb28) (SAE 12L13) 11SMnPb37 – (9SMnPb36) (SAE 12L14)
Size Range mm Thickness 12- 40 11SMn30 – (9SMn28) (SAE 1213) 11SMn37 – (9SMn36) (SAE1215)
Length mm 3000 – 8000 3000 – 8000 3000 – 8000 35S20
Production Norm EN 10277 EN 10278 EN 10278 10S20
Diameter Tolerance h9-h10-h11 h9-h10-h11 h9-h10-h11
EN 10277-1 Surface Crack Test Preferential Preferential Cannot be done Cannot be done
  • Blue: Available in our Regular Stocks
  • Navy Blue: Made to Order
  • Grey: Cannot be produced
Category: Product ID: 2032



Free-cutting steels are unalloyed steels containing a high proportion of Sulfur (S) and Manganese (Mn), and due to the small and brittle chip formation thanks to Manganese and Sulfur, they allow fast operation in production. Due to the easy machinability feature they have, they are defined as steel, which has the most suitable machinability feature for longitudinal and forehead turning, threading, drilling, reaming, etc. machining operations performed on single or multi-spindle, rovelver and lathe benches.
Cutting speeds can be increased by adding Lead (Pb) to these steels. Free-cutting steels are divided into three groups as those that are heat treated, those that are not heat treated and those that are cemented.

Free-cutting steels are used as cold drawn with precise dimensional tolerances. Surface sensitivity h9 is produced within the tolerances of h11. It is mainly used in the automotive, white goods and machining sectors.


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