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Free Machining Plate
CleanCut® 20/C1119

Description

CleanCut® 20 is sold as a Hot-Rolled, resulphurized plate steel produced especially for its fine machining characteristics. Usually found with a Hot-Rolled finish, it is also inventoried as a pre-ground DeCarb Free product. Typical Top and Bottom tolerances are +.015/.035. This low carbon steel may be cut with feeds approximately 100 to 200% greater than those used for SAE 1020 plate. The carbon contents of this grade are such that wear resistance might be improved by carburizing. Sulphur added to this steel forms manganese sulfides, and gives free-machining qualities.

C1119 is an ideal grade for many applications requiring extensive machining and smooth surface finish. It may be flame hardened to locally improve surface properties. Improved machining characteristics reduce machining costs and residual stresses, while improving surface finish in comparison to ordinary grades.

Typical Applications

This plate steel was developed for applications requiring improved drilling, milling, boring, or shaping. These plate steels have been used in numerous applications:

  • Molds
  • Rings
  • Rolls
  • Machine ways
  • Platens
  • Sprockets
  • Fixtures
  • Bushings
  • Cams
  • Die holders
  • Threaded parts

Resulphurized steel generally exhibits lower ductility, toughness and weldability than structural steels. CleanCut® 20/C1119 Free Machining Plates are not recommended for structural applications.

Chemical Composition


    CleanCut® 20
    C1119
    Carbon: .14 - .22 Carbon: .17/.23
    Manganese: 1.20 - 1.50 Manganese: 1.00/1.30
    Silicon: .10/.40 Silicon: .04 max
    Phosphorus: .04 max Phosphorus: .20/.33
    Sulphur: .06 - .12 Sulphur: .30 max

 

 

 

 

* CleanCut 20 is a registered trademark of Bethlehem Lukens Steel

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