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The Complete Guide To Injection Molding Plastic Parts

What Is Injection Molding?

Injection molding is a conventional manufacturing process that involves creating a hard tool out of steel and then using it to mold large quantities of plastic parts.

Benefits

The most important benefits of Injection Molding are Large Volumes, Rapid Delivery and Quality Production Parts.

Materials

Make parts using a range of plastic molding materials. Get a Quote, Get Design Services, or use our Material Wizard to get more tooling & molding information.

Solutions

Our team has decades of experience with injection molding and know how to use tooling & molding to make your specific application. Contact an Engineer to start your project.

FAQs

Got questions about Injection Molding? We've got answers.

What Is Injection Molding?

an injection molded partInjection molding is the most commonly used method for producing higher volumes of plastic parts.

We employ offshore production with US-based project management and quality assurance for efficient, cost-effective tooling and injection molding operations.

Rapid Delivery of Injection Molded Parts

Need low-volume parts quickly? Depending on your project requirements, our Fast Track injection molding can deliver parts in as little as ten days.

U.S. Based Injection Molding Project Management

Work directly with an experienced team, dedicated to delivering your parts in your timeline.

By providing a mold-build schedule and regular project updates, you can depend on timely production with globally competitive pricing.

Injection Molding Production Capabilities

Access cutting-edge tooling manufacturing facilities, including high-speed CNC machines, EDM machines and press sizes up to 800 tons.

These precise tooling operations complement our state-of-the-art injection molding capabilities.

Injection Molding Solutions Across Product Development

For new design verification utilizing our prototyping to production services in our state of the art facilities, we aim to provide end to end product development life cycle solutions.

Injection molding is an ideal alternative to 3D printing for parts at a better cost per piece and in materials not available in 3D printing.

Injection Molding Benefits

injection molding large volumes

Large Volumes

Produce high volumes of consistent production parts with near-limitless plastic material options.

injection molding rapid delivery

Rapid Delivery

Our proprietary tooling methods allow us to deliver low-volumes of parts within one to two weeks.

injection molding quality production parts

Quality Production Parts

Get precise, repeatable parts throughout large production at the quality you expect.

Injection Molding Materials

As you consider your options for low-volume injection molding, talk to our experts. We can work with any production plastic material your project requires, but the most common options are listed below.

Material

Description Benefits Applications Properties

ABS

Common thermoplastic with good impact resistance and toughness.
  • Good impact resistance with toughness and rigidity
  • Metal coatings have excellent adhesion to ABS
  • Excellent processability and appearance
  • Computer housings
  • Musical instruments (recorders & plastic clarinets)
  • Telecom devices
  • Small appliances (enclosures)
  • Automotive (interior trim, wheel covers, emblems)
  • Medical components
DATASHEET

Polypropylene

Thermoplastic polymer used for a wide number of applications.
  • Excellent moisture resistance
  • Food grades available
  • Mold–in hinge possible
  • Good impact strength
  • Packaging
  • Industrial components for fluid processing
  • Household goods
  • Automotive
  • Electrical hardware
DATASHEET

Polyoxymethylene (POM)

Dimensionally stable thermoplastic with high stiffness and low friction.
  • High tensile strength with rigidity and toughness
  • Good impact and solvent resistance
  • Glossy molded surface
  • Low static and dynamic coefficients of friction (slippery)
  • Many grades have FDA and NSF approvals on food and water contact
  • Replace die-cast metal components
  • Mechanical automotive
  • Business machines
  • Household appliance
  • Gears
  • Bushings
  • Door handles
  • Seat belt parts
DATASHEET

Polycarbonate

Thermoplastic material with good temperature resistance and impact strength.
  • High impact resistance
  • Clarity
  • Dimensional stability
  • Chemical resistance (PC blends)
  • Automotive headlights
  • Business machines
  • Consumer products
  • Telecommunications
  • Medical products
  • Mechanical goods
DATASHEET

Polycarbonate / ABS

Blend of PC and ABS that creates strong parts for a variety of applications.
  • Good impact resistance with toughness and rigidity
  • Metal coatings have excellent adhesion to ABS
  • Very good indoor UV light color stability
  • Excellent processability and appearance
  • Automotive exterior and interior components
  • Medical hardware
  • Electrical housings
  • Computers
  • Monitors
  • Business equipment housings
  • Enclosures
DATASHEET

PVC

PVC is a polymer with good insulation properties, high hardness, and good mechanical properties.
  • Wide range of flexibility
  • Flame retardant
  • Dimensional stability
  • Low cost
  • Medical/healthcare products
  • Automotive applications
  • Household items
  • Electronic extruded wire covering
DATASHEET

Nylon

Polymer material that is durable with high elongation and good abrasion resistance.
  • Temperature capability 600°-700° for short term
  • Excellent chemical resistance
  • High resistance to abrasion
  • Tough and withstands repeated impact
  • Automotive components
  • Bearings
  • Electronic connectors
  • Gears
  • Consumer products
  • Industrial products
DATASHEET

Nylon 32% Glass Fiber

Polymer with excellent mechanical stiffness and elevated temperature resistance. - - DATASHEET

Acrylic (PMMA)

Material with resistance to breakage often used for transparent applications.
  • Excellent optical clarity
  • Excellent weatherability and resistance to sunlight
  • Rigid with good impact resistance
  • Good light transmission
  • Automotive transparent items such as head/tail lenses and trim
  • Household light fixtures and decorative items
  • Safety equipment and shields
DATASHEET

Polystyrene

Light weight material popular for its high impact strength and toughness.
  • Optical clarity
  • High gloss
  • FDA grades available
  • Low cost
  • Good dimensional stability
  • Good rigidity
  • Household goods
  • Containers
  • Furniture
  • Housings
  • Packaging
DATASHEET

Polyetherimide (PEI)

Thermoplastic with high heat resistance and excellent mechanical properties.
  • High heat resistance
  • Exceptional strength and impact modulus
  • High dielectric strength
  • Broad chemical resistance
  • Biocompatible
  • Excellent machinability and finishing characteristic
  • Outstanding processability on conventional molding equipment
  • Flame resistance with low smoke evolution
  • Commercial aircraft interiors
  • Healthcare products
  • Cooking utensils
  • Fiber optics
  • Electrical products
  • Electronic parts
DATASHEET

Get a Quote

Ready to make your part with injection molding?

Upload your CAD file now to select your material and generate an instant quote.

Get a Quote

Get Design Services

Need some assistance with your 3D design?

Our design services team offers a suite of solutions, including file creation and file repair.

Get Design Services

Use Material Wizard

Want to compare injection molding material properties?

Use our material wizard to find out which materials meet your part's requirements.

Use Material Wizard

Injection Molding Quality Assurance

injection molded skisInjection molding precise parts takes a team of experts, ensuring well-built tooling and smooth processes offshore and onshore.

At Stratasys Direct, our injection molding services are backed by decades of manufacturing experience and a tireless team of project managers ready to assist you every step of the way.

How We Guarantee Injection Molding Quality

Working with customers across a variety of industries, we’ve developed thorough methods to provide solutions for fast tooling and complementary post-processing in order to serve your versatile needs.

With ISO 9001 quality certifications, our team of experts won’t rest until your requirements for precise parts are met.

Not sure where to start? Our experts are here to help.

Contact an Engineer

Injection Molding Resources

emd millipore

EMD Millipore’s Muse Cell Analyzer

EMD Millipore utilizes multiple tech before injection molding.

EMD Millipore utilizes multiple tech before injection molding.

Read the Case Study
injection molding

Injection Molding Design Guidelines

Discover key design considerations when fabricating with injection molding.

Discover key design considerations when fabricating with injection molding.

Download the Design Guidelines
injection molding

Five Steps to Mass Production

Key steps to help designers and engineers reach mass production and product success.

Key steps to help designers and engineers reach mass production and product success.

Read the Article

Frequently Asked Questions About Injection Molding

white injection molded plastic partDo you offer molding options other than injection molding?

Although injection molding is most popular, Stratasys Direct Manufacturing offers a variety of high- and low-volume molding processes, including urethane casting and tooling for composite layup.

Contact your project engineer to learn more.

Do you manufacture tooling for injection molding operations based in the US?

Yes. We offer export Tooling built to customer requirements that can be run in our customers’ machines or at one of our US-based partner facilities.

All of our tooling has documented warranties and US-based support for repairs and engineering changes.

Where is the project management team located?

Our experienced Tooling and Injection Molding management team is based out of Phoenix, Arizona. They have a deep understanding of all phases of tooling, including part design, tool design, and material sciences.

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