Key Features

• ASTM B139
• C544 alloy is a free-cutting Phosphor Bronze
• Possesses excellent cold-working and mechanical properties
• Polishes to a rich golden finish.
• Used for thrust bearings, pinions, gears and screw machine parts.

Product Description

Bronze is a Copper alloy with tin as the principal alloying material rather than zinc. The color range of bronzes go from a reddish color where the copper contents exceeds 90 percent to orange-yellow (typical) below 90 percent. When polished, bronze develops a beautiful golden finish. A typical 80-20 bronze would have an approximate density of 0.315 lb/in3 and have a melting point of approx. 1868 F (1020 C). Ductility decreases rapidly with the increase of tin in the alloy mix. Phosphor bronze has a tin content of 1.25-10 percent, and possesses excellent cold-working and mechanical properties. Architectural or art bronze typically contains 97 percent copper, 2 percent tin and 1 percent zinc. This C544 alloy is a free-cutting Phosphor Bronze with just about 10 percent less machinability than our free-cutting brass. It machines easily and is a fine material for sleeve and thrust bearings, pinions, gears and many products manufactured on a screw machine. While it can be readily heat formed, forged, polished, silver soldered and/or brazed, it is not recommended for electric welding.