Cupro-Alu

CuAl7Si2

Copper-aluminum

EN CW302G - UNS C64200

CuAl7Si2 is a wrought aluminum-silicon bronze valued for its low magnetic permeability, good machinability, and high corrosion resistance, particularly in marine environments. This alloy offers good mechanical strength while maintaining excellent ductility. It is used in applications requiring reliability, dimensional stability, and wear resistance.

Properties

Machinability
Corrosion Resistance
High-Temperature Resistance

Development

Hot-extruded
Cold-drawn
Forged

States

R280 / H070
R740 / H200
R500 / H120
R600 / H140

Applications

Valves
Marine components and non-magnetic parts
Industrial and Automotive Components

Chemical Composition

ElementCu (%)Al (%)Fe (%)Neither (%)Pb (%)Mn (%)Yes (%)Sn (%)Zn (%)Other (%)
ContentsRemaining6.3–7.6≤0.3≤ 0,2≤0.05≤0.21.5–2.2≤ 0,2 ≤ 0,5≤0.2

Mechanical Properties

Hardness (HB)≥120
Rm (MPa)≥500
0.2 Rp (MPa)≥250
A%≥10
Density (g/cm³)7.7

Available Sizes

Plate

Flat side

Round

Hexagonal

Custom-made

Standards

EN 12163
EN 12165
EN 12167
ASTM B150

Certificate 3.1 available

Upon request when ordering

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