319 Aluminum Sand Castings
Aluminum alloy 319 is a 6% Si and 3.5% Cu alloy with 1.0 Fe maximum. It has excellent casting and machining characteristics. Corrosion resistance and weldability are very good. Mechanical properties are good in both the heat-treated (T5) and non-heat treated conditions.
The anodized color is generally gray with a brown cast depending on the amount and ratio of silicon and copper.
Typical applications for sand casting 319.0 are a wide variety of structural castings for engine parts, engine crankcases, gas and oil pans, and general commercial applications.
Click to enlarge the following sample 319 Aluminum Alloy work.
Typical Mechanical Properties
| Alloy | Temper | Ultimate Tensile (ksi) | Yield Strength (ksi) | Brinell Hardness (500 Kg) | Shearing Strength (ksi) |
|---|---|---|---|---|---|
| 319.0 | F | 27 | 18 | 70 | 22 |
| 355.0 | T6 | 35 | 25 | 80 | 28 |
| 356.0 | T6 | 33 | 24 | 70 | 26 |
| A356.0 | T6 | 40 | 30 | 75 | |
| A357.0 | T6 | 46 | 36 | 85 | 40 |
| 535.0 (Almag 35) | F | 40 | 20 | 70 | 27 |
| 713.0 (Tenzaloy) | F or T5 | 34 | 23 | 75 | 265 |
Chemical Composition (%)
| Alloy | Cu. | Si. | Mg. | Zn. | Other |
|---|---|---|---|---|---|
| 319.0 | 3.5 | 6 | |||
| 355.0 | 1.3 | 5 | 0.5 | ||
| 356.0 | 7 | 0.3 | |||
| A356.0 | 7 | 0.3 | Fe 0.2 max | ||
| A357.0 | 7 | 0.6 | Ti 0.1 Be 0.06 | ||
| 535.0 (Almag 35) | 6.9 | Be 0.005 | |||
| 713.0 (Tenzaloy) | 0.7 | 0.4 | 7.5 |
Typical Applications
| Alloy | Application |
|---|---|
| 319.0 | Engine crankcases, gas and oil tanks, engine oil pans, engine parts. |
| 355.0 | Air compressor pistons, printing press, water jackets & crankcases. |
| 356.0 | Flywheel castings, automotive transmission cases, oil pans, pump bodies. |
| A356.0 | High strength airframe and space frame structural parts, machine parts, truck chassis parts, high velocity blowers and impellers. |
| A357.0 | High strength aerospace castings. |
| 535.0 (Almag 35) | High strength alloy used for electronic equipment, aircraft components and parts requiring a high degree of dimensional stability and strength. Superior ductility makes it an excellent replacement for malleable iron. No heat treat required. |
| 713.0 (Tenzaloy) | Automotive parts, trailer parts, pumps & mining equipment. |
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