CW724R (CuZN21Si3P)
Lead-Free Performance Brass
CW724R is a lead-free brass product which offers high tensile strength and hardness.
The brass alloy offers superior resistance to stress corrosion cracking (SCC) and dezincification.
Capabilities:
Hot formability is very good, while cold formability is fair. The alloy meets EU drinking water requirements along with ELV and RoHS directives and, therefore, finds use in water systems and sanitary applications. CW724R also benefits from good machinability and corrosion resistance.
Further Details:
Often referred to as silicon red brass, CW724R has low lead (Pb) content (less than 0.1%). From a suitability perspective, the alloys is considered a high-strength alternative to certain stainless steels. The material also has an aesthetically pleasing finished once polished.
Applications:
The product is highly suitable for high-strength applications subjected to high loads. Motorsport applications include valve stems, automotive components, and pneumatics.
Where performance matters:
When you purchase high-performance materials from Smiths High Performance, you will join some of the biggest and best global engineering companies. We are a Tier 1 supply chain partner to the world's leading motorsport companies. Our unique business structure and ethos allow us to offer services otherwise unavailable in this market sector.
- Lead free
- High tensile strength
- High hardness
- Very good hot formability
- Valve stems
- Automotive components
- Pneumatics
- Drinking water applications




