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An Example in Ductile Iron Casting  Axle Housing for Skid-Steer Loader

Pattern Fabrication Method
Pattern Fabrication Method                      Relative Pattern Cost Durability and Surface Finish Tooling Tolerance
Cast Aluminum 1X Limited life with possible surface flaws appearing with accumulated wear +/-  0.030"
Machined Aluminum 3X Extended life with no surface flaws appearing with accumulated wear +/- 0.005"

Machined aluminum is the most cost effective pattern material for this long term (8,000/annum, multi-year) production run.

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Last Modified:May, 2000 by STG
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