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ZeST®: Performance Materials for a Lead Free Future

Lebronze alloys announces the launch of ZeST®, a next‑generation family of fully lead‑free turning alloys designed to help electronics, medical devices, connector and precision industries transition to more responsible materials — without compromising performance.
Engineered for demanding machining environments, all ZeST® alloys deliver fast cutting speeds, controlled chip‑breaking, and steady tool life, while fully REACH & RoHS compliant.


Four alloys, one mission: uncompromised lead‑free performance

 

  • ARCAP ZeST®

The lead‑free evolution of ARCAP® AP1D, retaining its signature non‑magnetism, excellent corrosion resistance, and high dimensional stability. Ideal for luxury watchmaking, electronics, and medical precision parts.
Recycled content: at least 90%.

 

  • BZ4 ZeST®

The next‑generation alternative to BZ4 (C54400), developed for high‑performance connector systems. Clean chip‑breaking, low friction, and reliable tolerances even in complex machining.
Recycled content: 92%.

 

  • C97 ZeST®

The lead‑free version of C97® (C19160), combining high electrical conductivity with high mechanical strength. Designed for aerospace and electronic applications where signal integrity and machining consistency are critical.

 

  • Declafor ZeST®

A modern substitute for leaded beryllium copper, offering high strength, resilience, and excellent machinability for miniature, tight‑tolerance parts in watchmaking and connectors.
Recycled content: 99%.


A responsible and high‑performance materials offer


With ZeST®, Lebronze alloys delivers a complete range of lead‑free, high‑performance materials, each designed to combine precision, machinability, and responsible sourcing.


👉 Discover the full ZeST® line: ZeST® High performance and machinable lead-free materials - Lebronze alloys


ZeST® Line — Engineered without lead. Built to perform.
The future of lead‑free precision starts now.

Industries

Automotive

Electronics

Healthcare

Luxury & consumer goods