In diecast the mold or die is usually made of steel. So, materials and alloys with an equal or higher melting point than steel cannot be cast using the diecast process.
But in sand casting, the mold is made with special reusable sand. It can withstand very high temperatures and can be easily machined to the desired dimensions. For this reason, you can cast both ferrous and nonferrous metals using the sand casting process.
The table below contains some more key comparisons between die cast and sand cast:
Key Points | Die Casting | Sand Casting |
Precision | Higher | Lower |
Wall Thickness | Thinner | Ticker |
Production Volume | High | Low |
Surface Finish | Excellent | Not as good |
Cost of Mold | Higher | Lower |
Reusability of Mold | Possible | Not Possible |
Complex Parts | Possible and mostly easy to make | Difficult and mostly not possible |