Alloys We Use
for Foundry Castings in Denver
| Alloy | Sand Casting | Permanent Mold Casting | Low Pressure Casting | Notes |
|---|---|---|---|---|
| A319 | X | Used to simulate the heat transfer rates of die-cast A380 | ||
| A355 | X | Rarely used, but is still supported | ||
| 356.0** | X | X | X | Most common gravity cast alloy of aluminum. With a T6 temper, the mechanical properties are used to simulate die-cast A380 |
| 357.0** | X | X | X | Stronger than 356. Best gravity cast aluminum for parts where strength is a concern |
| 413F | X | X | Die cast alloy utilized for gravity pour castings | |
| A380 | X | Gravity cast A380 is used when parts will be submitted for independent inspection prior to die-casting | ||
| Zinc | X | Nearly as strong as steel, zinc is an excellent choice when weight is not a design concern |
**Primary House Alloys Aluminum 356 & 357 - All alloys above available**
Sand Casting
| Alloy | Temper | Tensile (ksi) | Yield (ksi) | Elongation |
|---|---|---|---|---|
| A319 | F | 27 | 18 | 2% |
| A355 | T51 | 25 | 20 | 1% |
| T6 | 32 | 20 | 2% | |
| 356.0 | F | 19.0 | Not specified | 2.0% |
| T51 | 23.0 | 16.0 | Not specified | |
| T6 | 30.0 | 20.0 | 3.0% |
357.0 is specified in permanent mold; see the permanent mold table.
356.0 and 357.0: Aluminum Association, Standards for Aluminum Sand and Permanent Mold Castings. Other alloys: Protocast values.
Permanent Mold Casting – Low Pressure Casting
| Alloy | Temper | Tensile (ksi) | Yield (ksi) | Elongation |
|---|---|---|---|---|
| A319 | F | 28 | 14 | 1.5% |
| A355 | T51 | 27 | ||
| T6 | 36 | |||
| 356.0 | F | 21.0 | Not specified | 3.0% |
| T51 | 25.0 | Not specified | Not specified | |
| T6 | 33.0 | 22.0 | 3.0% | |
| 357.0 | T6 | 45.0 | Not specified | 3.0% |
| 413 | F | 42 | 19 | 3.5% |
356.0 and 357.0: Aluminum Association, Standards for Aluminum Sand and Permanent Mold Castings. Other alloys: Protocast values.
Minimum Mechanical Properties of Sand Casting Alloys
| Material | Alloy | Temper | Tensile (ksi) | Yield (ksi) | Elongation |
|---|---|---|---|---|---|
| Aluminum | 356.0 | F | 19.0 | Not specified | 2.0% |
| T6 | 30.0 | 20.0 | 3.0% | ||
| 319.0 | F | 23.0 | 13.0 | 1.5% | |
| T6 | 31.0 | 20.0 | 1.5% | ||
| Zinc | ZA12* | F | 40-46 | 30 | 1-3% |
357.0 is specified in permanent mold; see the permanent mold table.
*Typical values; not covered by the Aluminum Association standard.
Source: Aluminum Association, Standards for Aluminum Sand and Permanent Mold Castings.
