Nominal compositions of aluminum foundry alloys

alloy elements (percent)

designation casting

process* Si Cu Mg others** applications

208.0 S 3.0 4.0 general purpose

213.0 P 2.0 7.0 cylinder heads, timing gears

242.0 S, P 4.0 1.5 2.0 Ni cylinder heads, pistons

295.0 S 1.1 4.5 general purpose

B295.0 P 2.5 4.5 general purpose

308.0 P 5.5 4.5 general purpose

319.0 S, P 6.0 3.5 engine parts, piano plates

A332.0 P 12.0 1.0 1.0 2.5 Ni pistons, sheaves

F332.0 P 9.5 3.0 1.0 pistons, elevated temperatures

333.0 P 9.0 3.5 0.3 engine parts, meter housings

355.0 S, P 5.0 1.3 0.5 general; high strength, pressure tightness

356.0 S, P 7.0 0.3 intricate castings; good strength, ductility

360.0 D 9.5 0.5 2.0 Fe max marine parts, general purpose

380.0 D 8.5 3.5 2.5 Fe max general purpose

A413.0 D 12.0 large intricate parts

443.0 D 5.3 2.0 Fe max carburetors, fittings, cooking utensils

B443.0 S, P 5.3 0.8 Fe max general purpose

514.0 S 4.0 hardware, tire molds, cooking utensils

520.0 S 10.0 aircraft fittings

A712.0 S 0.5 0.7 6.5 Zn general purpose

*S, sand-cast; P, permanent-mold-cast; D, pressure die-cast.

**Aluminum and impurities constitute the remainder.