Classification of Injection Molds |
This information is intended to help our customers in the initial
selection of the most economical and cost effective mold to produce their
product. Our tooling quotations will specify the class of tooling we
suggest relative to the information received on your request for quote. We
suggest and encourage your involvement in this initial decision.
The information contained below is from the Customs and Practices of
the Mold making Industry published by: Mold makers Division, The Society
of the Plastics Industry, Inc.
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Class I Mold:
Description: Built for extremely high
production. Highest tolerances. This is the highest priced mold and is
built with only the highest quality materials.
Tool Steel: Mold base -DME #3 / Inserts
- 420SS |
Class II Mold:
Description: Built for medium to high
production. Relatively tight tolerances. Good for abrasive, corrosive
materials. This is a high quality, fairly high priced mold and is built
with high quality materials.
Tool Steel: Mold base -DME #2 / Inserts
- S7 |
Class III Mold:
Description: Built for low to medium
production. Medium tolerances. This is the low end of the production
tooling price range and is built with medium quality materials. Not
suitable for corrosive materials
Tool Steel: Mold base -DME #1 / Inserts
- H13 |
Class IV Mold:
Description: Built for low production.
Lowest tolerances. Low to moderate price range. Not suitable for
corrosive or abrasive materials.
Tool Steel: Mold base -DME #1 / Inserts
- P20 |
Class V Mold:
Description: Prototype mold. This mold
will be constructed in the least expensive manner possible to produce a
limited quantity of prototype parts. Lowest cost injection mold.
Tool Steel: Mold base -Steel or Aluminum
/ Inserts - Aluminum
Note: Mold Base and Insert materials
are examples and may vary due to mold design requirements.
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