IS 419 : 2020

Leaded Tin Bronze Rods and Bars

ASTM B139
CurrentSpecializedSpecificationMaterials Science · Aluminium and Non-Ferrous Metals
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Summary

IS 419 covers leaded tin bronze in wrought (rod/bar) form — the same alloy system as IS 318 (castings) but in cold-drawn/extruded form. Used for machined bearing bushings, thrust washers, and precision wear components.

Specification for leaded tin bronze rods and bars for general engineering, covering grades, chemical composition, and mechanical properties.

Key Values
Tin content9-11%
Lead content4-6%
Tensile strengthMin 300 MPa
Practical Notes
! IS 419 (wrought rod/bar) has higher strength than IS 318 (cast) due to cold working.
! Used to machine precision bushings and bearings on CNC lathes.
! Lead content provides self-lubrication and machinability.
Cross-Referenced Codes
IS 318:2003Leaded Tin Bronze Ingots and Castings
→
IS 319:2019Free Cutting Brass Bars, Rods and Sections
→
IS 292:2009Phosphor Bronze Ingots and Castings
→
bronze rodleaded bronze barbearing bronzenon-ferrous rod