leaded alloy

leaded alloy

[′led·əd ′al‚ȯi]
(metallurgy)
An alloy, especially of brass, bronze, or steel, to which lead is added to improve machinability and mechanical properties.
References in periodicals archive ?
The measured solidification range for the bismuth-containing alloy was approximately 90[degrees]F (50[degrees]C) greater than the leaded alloy solidification range and approximately 81[degrees]F (45[degrees]C) smaller than the lead/bismuth free alloy The liquidus of the bismuth containing alloys was lower than both the leaded and lead/bismuth free alloys.
Occasionally customers request a leaded alloy, but LA Pump and Valve details the benefits of its "upgraded" alloy and converts the customer to no-lead copper casting.
Chicago Faucet Co, a green sand foundry pouring a copper-base leaded alloy, employs a reclamation system that reclaims sand and recovers alloy for remelting.
Cross contamination with leaded material is detrimental and is a major concern if bismuth alloys get into leaded alloys also.
While some existing gating and risering techniques designed for traditional leaded alloys, such as C83600, were successful without modification, other casting geometries required larger ingates.
As new environmental legislation limits the lead content in castings, especially in water applications, more users are demanding non - leaded alloys for other applications.
Copper-bismuth alloys were developed to behave in the metalcasting process and have properties similar to existing leaded alloys.
PANEL: Case Studies in the Use of Solidification Modeling to Transition Away From Leaded Alloys (10-160)
The lead-free alloys were developed to have foundry characteristics (melting and casting) as well as properties (physical and mechanical) similar to existing leaded alloys.
This new rule will force many foundries to begin reporting on lead-especially those melting leaded alloys or contaminated scrap.