What's New
April 26, 2010
Magic Precision Inc. Expansion
Company to move into new 39,000 sq. ft. headquarters in Taichung Industrial Park.
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Resources
- Get A Quote
- FAQ
- - Die Cast
- - Tooling
- - Offshore
- Design
- - Process Comparison
- - DFM Tips
- Material Properties
- - Die Cast Alloys
- - Investment Casting Alloys
- - Gravity Casting Alloys
- - Extrusion Alloys
- - Mechanical Properties
- - Alloys Cross Reference
- - Aluminum Alloys
- - Magnesium Alloys
- - Cast Iron Standards
- - Heat treatment
- - Steel (compositions)
- - Steel (mechanical)
- - Copper (compostions)
- - Plastics
Comparison of Standard Manufacturing Processes
The chart below summarizes the characteristics of the standard manufacturing processes to help you choose the right one for your products. We offer most of these processes.
| PROCESS | DIE CASTINGS | PRECISION SAND CASTINGS | RUBBER PLASTER MOLDING | INVESTMENT CASTINGS | PERMANENT MOLDING | GRAPHITE PERMANENT MOLD |
| Weight Range | 0-30 lb (0-15kg) | 0-45kg | 0~ 12 kg | 0-20 lb (0-10 kg.) | 0 ~ 45 kg. | 0 ~5 kg |
| Tolerance | ±0.002" (±0.1mm); add ±0.015" across parting lines | ±0.5-3.0mm | ±0.2~3 mm | ±0.003" to 1/4"; 0.004" to 1/2"; ±0.005" to 3"; then add 0.003" per inch | ±0.4mm | ±0.2mm |
| Flatness | Within 0.2mm (geometry dependent) | Within 0.5mm (geometry dependent) | Within 0.3 mm (geometry dependent) | Within 0.015" (geometry dependent) | Within 0.3mm (geometry dependent) | Within 0.2mm (geometry dependent) |
| Surface Finsh | 32-63 RMS | 120-175 RMS, except on cored areas | 63-125 RMS | 63-125 RMS | 150-300 RMS | 63 RMS or better |
| Minimum Draft Required | 1° to 3° | 0.5° to 3° | 0.5° to 2° | None | 2° to 4° | 1° to 2° |
| Minimum Wall Section | 0.030"-0.060" (0.8-1.5mm) | Typical: 3.5-5mm; Minimum: 2.0mm (geometry dependent) | Typical: 2.5~5mm. Minimum: 1.0mm (geometry dependent) | 0.060" (1.5mm) | 5mm | 2.5mm |
| Typical Quantities | >2,000 | All | <2,000 | <1,000 | >500 | 500-1500 |
| Typical Tooling Cost (N.R.E.) | $3k-$100k | $800-$4k | $3K - 15K | $3K - 10K | $5K - 15K | $1.5K - 5.5K |
| Nominal Lead Time | Samples: 4-6 wks; Production: 4-6 wks after 1st article approval | Samples:1-4 wks. Production:1-5 wks. after approval. | Samples:2 - 4 wks. Production:1-5 wks. after approval. | Samples:2-4 wks. Production:5-12 wks. after approval. | Samples:8-20 wks. Production:10-12 wks. after approval | Samples:3-6 wks. Production:2-4 wks. after approval. Lifetime use. |
