| |
Sand Casting |
Permanent Molding |
Die Casting |
Ceramic & Investment Casting |
Resin Shell Molding CO2 Nobake Molding |
| Dimensional Tolerances |
�.010" �.030" |
�.010" �.050" |
�.001" �.015" |
�.010" �.020" |
�.005" �.015" |
| Relative Cost - High Part Quantity |
Low |
Low |
Lowest |
Highest |
Med. High |
| Relative Cost - Low Part Quantity |
Lowest |
High |
Highest |
Medium |
Med. High |
| Casting Weight Range |
Unlimited |
oz. - 100 lb |
oz. - 75 lb |
Ceramic -
3-350 lb.
Investment -
oz. - 100 lb |
Shell (oz.-200 lb.)
CO2 & Nobake
(.5 lb-tons) |
| Minimum Wall Thickness |
1/10" |
1/8" |
1/32" |
1/16" |
1/10" |
As Cast Finish
(RMS) |
150 - 350 |
150 - 200 |
63 - 90 |
60 - 125 |
125 - 200 |
Draft Angle
(Degrees) |
1 - 5 |
2 - 4 |
1/2 - 2 |
1/4 - 1/2 |
1/4 - 1 |
| Design Complexity/Detail |
Fair-good |
Fair |
Good |
Best |
Good |
Relative Ease of Design
Changes In Production |
Best |
Poor |
Poorest |
Fair |
Fair |
| Castable Alloys |
Most Ferrous / Non-ferrous Metals. |
Al-base & Cu-base Preferred |
Al-base Preferred |
Most Ferrous / Non-ferrous Metals. |
Most Ferrous / Non-ferrous Metals. |