Bronze

What is C630 Bronze?

C630 — also known as Nickel Aluminum Bronze and designated UNS C63000 — is a copper‑based alloy strengthened with aluminum and nickel (with small amounts of iron and manganese). It is engineered for high strength, outstanding wear resistance, and excellent corrosion resistance, especially in marine or harsh environments.

Why Use C630?

• High Strength & Toughness: Performs reliably under load and repeated use.
• Excellent Wear Resistance: Ideal for components that see sliding or bearing contact.
• Corrosion Resistance: Naturally resists seawater, sweat, and many chemicals.
• Dimensional Stability: Machines to tight tolerances with clean finishes.
• Distinct Aesthetics: Warm bronze tone that develops a natural patina over time.

Key Characteristics

• Composition (typical): Copper with ~9–10% aluminum, ~4–5% nickel, and small additions of iron/manganese.
• Mechanical Behavior: Stronger and tougher than common brasses; holds threads and edges well.
• Corrosion & Wear: Forms a protective film in service; resists galling and erosion.
• Machinability: Machines cleanly with sharp tooling and appropriate feeds/speeds.
• Feel & Weight: Noticeably heavier than titanium or aluminum; offers a solid, premium feel.

Finish & Care

• Natural Patina: Surface will darken and enrich with handling; many users appreciate this living finish.
• Polishing: For a brighter look, use a non‑abrasive metal polish and a soft cloth.
• Everyday Care: Wipe with a dry microfiber cloth; avoid harsh cleaners. If desired, light oil can slow patina.

At a Glance

• Premium bronze alloy with excellent strength and wear resistance.
• Corrosion‑resistant in daily use and marine environments.
• Machines to crisp details and develops a handsome patina.