APC Logo American Precision Castings Inc.
Aluminum Magnesium Zinc Copper Based Alloys
Specialists in prototype castings, low production and plastics tooling.
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Material:
Aluminum, Magnesium, Brass, Bronze and Zinc alloys.

Process:
Plaster mold, Air-set and green sand.

Size Tolerances (Typical):

INCH
0 to 2" + .005"
2 to 6" + .010"
6 to 9" + .012"
9 to 12" + .015"
Over 12" add + .0014"
per additional inch

*(Add .010" across parting lines)

 

INCH
0 to 50mm + .15mm
50 to 150mm + .25mm
150 to 250mm + .30mm
250 to 300mm + .40mm
Over 300mm + .0014mm
per additional mm

*(Add .25mm across parting lines)

 

Angular tolerance is + 1/2° (Note: APC processes may permit closer tolerances if required. Consult APC Engineering Department.)



Flatness & Straightness:
0-1" (0-25mm) .005 T.I.R. Add .002 T.I.R. for each additional inch (mm).

Minimum Radius:
.015" (.4mm)

Wall Thickness:
Optimum is .08" to .12" (2 to 3mm). Lesser wall thickness is achievable.

Draft:
From 1/2° to 2°. (Zero draft is possible in specific areas.)

Surface Finish:
80 to 125 rms.

Weight Range:
One ounce to 200 pounds. Vacuum form molds and plastic tooling up to several thousand pounds.

Holes and Openings:
Normal casting process requires that holes and openings be no deeper than two times hole size and be no smaller than ,250" (8.4mm) diameter. Smaller holes are possible.

Stress Relieving/Heat Treating:
As required, per customer specifications.

Send us your CAD files, drawings or samples. You will receive quotations within 2-3 days.

10330 W Roosevelt Road • Westchester IL 60154 • Phone: 708.450.1800 • Fax: 708.450.1813