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IS 319:2019 is the Indian Standard (BIS) for free cutting brass bars, rods and sections. IS 319 specifies free cutting brass bars, rods, and sections. The lead content (1.5-3.5%) improves machinability significantly, making this the preferred material for high-speed automatic screw machine products like fittings, valves, and hardware components.
Specification for free cutting brass (leaded brass) bars, rods, and sections for machining applications including chemical composition, mechanical properties, and dimensional requirements.
Overview
Status
Current
Usage level
Specialized
Domain
Materials Science — Aluminium and Non-Ferrous Metals
Lead (1.5-3.5%) acts as a chip breaker during machining, enabling high-speed production on automatic lathes. It also improves the surface finish of machined parts.
Can IS 319 brass be used for drinking water fittings?+
Caution required. The lead content may exceed limits for potable water contact in newer regulations. For drinking water applications, check IS 8931 and lead-free brass alternatives.