Plastic Injection Mold Types

Injection Molding Cost Calculator
Online Quotes in 30 Seconds
  • The world’s only 30-second injection molding quote
  • Parts shipped in as little as 15 days

Get your 30 second quote now

Low-Cost Injection Molding Leader
By Jeremy Losek, May 19th, 2022

Plastic Injection Mold Types

Mold Types to Fit Your Production Volume

ICOMold is a plastic injection molding company that offers a variety of choices in plastic injection mold types, depending on the quantity of parts you need manufactured.

P-20 is a general purpose mold steel designed for the plastic mold industry, and it is the steel we use for production molds. However, other types of steel are also used for molds designed for fewer cycles. For in-house molds, the customer owns the tooling and mold frame. (For export molds, the customer receives the mold frame with the tooling).

The first table below lists the characteristics of the molds that we use to run your parts for you in our facility. The second table lists the different types of export molds (we make the mold and ship it to you), based on number of cycles.

In-House Molds

Mold Type Tooling
Tooling Life
Tool Ownership
(Cavity & Core)
Mold Frame
Production Mold P20 Unlimited Customer Customer

Export Molds

Mold Type Tooling Life Cycles Description
Class 101 1M Built for extremely high production. This is the highest-priced mold and is made with only the highest quality materials.
Class 102 500,000-1M Medium to high production mold, good for abrasive materials and/or parts requiring close tolerances. This is a high-quality, fairly high-priced mold.
Class 103 100,000-500,000 Medium production mold. This is a very popular mold for low to medium production needs. Most common price range.
Class 104 10,000-100,000 Low production mold. Used only for limited production preferably with non-abrasive materials. Low to moderate price range.
Class 105 Up to 10,000 Low volume only. This mold will be constructed in the least expensive manner possible to produce a very limited quantity of parts.

To learn about the advantages of steel molds over aluminum molds, visit the aluminum molds page of our website.

ICOMold is a Leader in Plastic
Injection Molding for US Companies

Manufacturing Locations Across National Time Zones
The Fathom Advanced Manufacturing Platform

1050 Walnut Ridge Drive
Hartland, WI 53029
ISO 9001:2015


444 W. 21st St. Ste. 101
Tempe, AZ 85282
ISO 9001:2015
NIST800-171 Compliant


7770 Washington St.
Denver, CO 80229
ISO 9001:2015


13758 Johnson Street NE
Ham Lake, MN 55304


1801 Rowe Lane
Pflugerville, TX 78660
ISO 9001:2015

1513 Sam Bass Rd
Round Rock, TX 78681
ISO 9001:2015
ISO 13485:2016


620 3rd Street
Oakland, CA 94607
ISO 9001:2015 Design Certified
NIST 800-171 Compliant


14000 N.W. 58th Court
Miami Lakes, FL 33014
ISO 9001:2015 Design Certified
ISO 13485:2016



1920 Slaterville Rd
Ithaca, NY 14850

401 W. Shore Blvd.
Newark, NY 14513
ISO 9001:2015


1207 Adams Drive
McHenry, IL 60051
ISO 9001:2015

1401 Brummel Ave
Elk Grove, IL 60007
ISO 9001:2015 Design Certified