ASTM B 150 C 64200 Silicon Aluminum Bronze

Chemical Requirements

CuAl7Si2

Copper

Remainder

Aluminum

6.3 to 7.60%

Iron

0.30% max

Nickel

0.25% max

Manganese

0.10% max

Tin

0.20% max

Lead

0.05% max

Zinc

0.50% max

Silicon

1.5 to 2.2%

Total Imp. Excl. Fe, Ni & Mn

0.50% max

Physical Properties

Condition

Size

T.S.Kg/mm²

EL% Min

Annealed / As Manufactured

6 to 15
15 to 50
50 to 80
80 & above

620
575
515
485

9%
12%
12%
15%

Fabrication Properties

Capacity for being
Cold Worked
Hot Formed
Machinability Rating
Suitability for Soldering
Suitability for Brazing

Not Suitable
Excellent
80%
Excellent
Good

Uses

Hot Forged Components, Gas Valves bodies, Gears, Marine hardware