Aluminum Permanent Mold
A Comparison of Aluminum Casting Methods
| |
Casting Type |
|
Characteristic
|
Sand
|
Permanent Mold
|
Low Pressure
|
High Pressure
|
Semi Solid Molding
|
|
Die Composition
|
Metal & Plastic
|
Iron & Treated Steel
|
Treated steel
|
Treated steel
|
Treated steel
|
|
Die Cost
|
Low
|
Moderate
|
Moderate
|
High
|
High
|
|
Die Life
|
Moderate
|
Moderate
|
Moderate
|
High
|
Highest
|
|
Die Development Time (P.O. to sample)
|
2-8 wks
|
4-10 wks
|
5-12 wks
|
10-18 wks
|
10-18 wks
|
|
Die Modification Costs ($)
|
Low
|
Moderate
|
Moderate
|
High
|
High
|
|
Section Thickness
|
.125 min
|
.167 min
|
.167 min
|
.080 min
|
.070 min
|
|
Casting Temp. F
|
1300-1350
|
1250-1300
|
1225-1250
|
1200-1225
|
1000
|
|
Surface Finish
|
Fair
|
Good
|
Very good
|
Excellent
|
Best
|
|
Alloy Selectivity
|
Excellent
|
Excellent
|
Excellent
|
Limited
|
Limited
|
|
Density
|
Fair
|
Good
|
Very good
|
Fair
|
Best
|
|
Heat Treatable
|
Yes
|
Yes
|
Yes
|
No
|
Yes
|
|
Dimensional Stability
|
Fair
|
Good
|
Very good
|
Excellent
|
Excellent
|
|
Insert Capable
|
Yes
|
Yes
|
Yes
|
Yes
|
Yes
|
|
Net Shape Capability
|
Fair
|
Good
|
Better
|
Best
|
Best
|
|
High Volume Production Capability
|
Good
|
Fair
|
Better
|
Best
|
Best
|
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Fact Sheet
|
