Gravity/ Low Pressure Casting
Gravity casting and low pressure casting are typically used for non-ferrous materials such as aluminum. It is also known as permanent mold casting. The mold is made with heat-resistant steel. Low pressure casting produces better mechanical properties.
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Low Pressure Casting product |
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Precision casting pattern  |
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A frequently asked question is the difference between sand casting and low pressure casting.
If we use aluminum shell (ZAlMg10) as an example, please see below for comparison:
|
Tensile Strength (MPa) |
Elongation |
Hardness, HBS |
Sand Casting |
350-360 |
13% |
70-80 |
Steel Mold, Low Pressure Casting |
440-450 |
17-22% |
120-125 |
