Bronze

CuSn7Zn4Pb7

Bronze alloy

EN CC493K - UNS C93200

CuSn7Zn4Pb7 is a copper-lead-tin-zinc alloy known for its good wear resistance and excellent friction properties. It is characterized by its machinability and corrosion resistance, making it particularly well-suited for mechanical parts that require durable and reliable performance.

Properties

Machinability
Corrosion Resistance
Wear resistance

Development

Continuous casting

States

BIOLOGY STANDARD

Applications

Pump components subject to friction
Bearings for Industrial Machinery
Plain bearing and guide bushing

Chemical Composition

ElementSn (%)Zn (%)Pb (%)P (%)Neither (%)Fe (%)Cu (%)Other (%)
Contents6–82–55–8≤0.1≤0.2≤ 0,281–86≤ 0,42

Mechanical Properties

Hardness (HB)≥70
Rm (MPa)≥260
0.2 Rp (MPa)≥120
A%≥12
Density (g/cm³)8.8

Available Sizes

Round

Flat side

Hexagonal

Tube

Custom-made

Standards

IN 1982
ASTM B505
ASTM B271

Certificate 3.1 available

Upon request when ordering

* These values are for reference only; they may vary depending on the standard and condition.