319.0 (6Si-3.5Cu) Aluminum Alloy
- Former designations: 319, Allcast
- Former ASTM: SC64D
- SAE: 326
- UNS number: A03190
- Foreign: ISO AlSi6Cu4, AC 2A, 3052, A-S5U, A-S5U3, EN AC-45400, EN AC-45200, LM 22, G-AlSi6Cu4, ISO AlSi5Cu3
- Description: 319 is commonly not heat treated. We typically use 319.1 aluminum alloy. Typical applications for sand casting 319 are a wide variety of structural castings for engine parts, engine crankcases, gas and oil pans, and general commercial applications.
| Designations & nominal compositions of common aluminum alloys used for sand casting | |||||||
|---|---|---|---|---|---|---|---|
| AA Number | Former AA designations | Former ASTM number | Cu | Mg | Mn | Si | Others |
| 319.0 | 319, Allcast | SC64D | 3.50 | … | … | 6.00 | … |
| Characteristics of common aluminum alloys used in sand casting | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | Fluidity | Resistance to hot cracking | Pressure tightness | Heat Treatment | Strength at elevated temperatures | General corrosion resistance | Machining | Polishing | Anodizing Apperance | Weldability |
| 319.0 | 2 | 2 | 2 | Optional | 3 | 3 | 3 | 4 | 4 | 2 |
Characterisitics are comparatively rated from 1 to 5; 1 is the highest or best possible rating.
| Alloy | Uses |
|---|---|
| 319.0 | Engine crankcase covers, electrical boxes, gear boxes |
| Typical Tensile Properties for separately cast test bars of common aluminum casting alloys | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Alloy | Temper | Tensile strength | Yield strength | Shear strength | Compressive yield strength | Elongation % | ||||
| Mpa | ksi | Mpa | ksi | Mpa | ksi | Mpa | ksi | |||
| 319.0 | F | 185 | 27 | 125 | 18 | 150 | 22 | 130 | 19 | 2 |
| 319.0 | T6 | 250 | 36 | 165 | 24 | 200 | 29 | 170 | 25 | 2 |
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