Get an instant quote
Get in touch Listen to our podcast
injection molding resin material plastic pellets

Common materials for plastic injection moulding

Rapid prototyping
and full-scale production
ISO accredited
& QC checks
All in-house
Used in over
50 countries
FREE Instant

One of the most common plastic injection moulding questions that we get asked is, “what material should I use for my project?” There is no one answer for that. Injection moulding offers a wide variety of resins and combinations of materials, each with its own unique properties and characteristics. To get you started, we’ve listed ten of the most popular plastic injection moulding materials along with their key features and typical applications.


Top 10 injection moulding materials


  • High-density Polythylene (HDPE)
  • Acrylonitrile Butadiene Styrene (ABS)
  • Polycarbonate (PC)
  • Polyethylene (PE)
  • Polyoxymethylene (POM)
  • Acrylic (PMMA)
  • Nylon (PA)
  • Polypropylene (PP)
  • Polycarbonate + Acrylonitrile Butadiene Styrene (PC/ABS)
  • Thermoplastic Polyurethane (TPU)



High-density Polythylene (HDPE)

HDPE is a resin typically found in pellet form and designed to provide excellent processability for moulders. It is light, affordable and offers very good resistance to impacts, chemical damage, and other potentially harmful external factors. These characteristics make HDPE ideal for producing bottles and containers used to safely transport contents.


Key featuresApplications
Lightweight, excellent chemical resistance, environmentally friendlyAgricultural and medical products, recycling bins, cleaning containers


Rapid injection moulded HDPE material part


Acrylonitrile Butadiene Styrene (ABS)

ABS is a common thermoplastic polymer used in injection moulding. It is an optimal choice for producing parts that require high tensile strength, low production cost, and excellent impact resistance. ABS parts also exhibit excellent resistance to everyday knocks and scrapes, making it great for furniture in high-traffic areas.


Key featuresApplications
High tensile strength, resistant to scratches, high mechanical strengthAutomotive interior and exterior components, medical device housings, consumer products


Injection moulded white ABS Material part


Polycarbonate (PC)

Polycarbonate is a tough, transparent plastic that has excellent impact resistance and is often used in applications where high strength and clarity are important, such as lenses, electronic components, and medical devices.


Key featuresApplications
Shatter resistance, durable, good electrical propertiesElectronic housing and enclosures, eyewear, bullet-proof glass


Injection molded PC Material part


Polyethylene (PE)

Polyethylene is a lightweight thermoplastic that is easy to mold and has good chemical resistance. It is used in a wide variety of applications, including packaging, pipes, and automotive components.


Key featuresApplications
Impermeable, lightweight, good electrical insulation propertiesElectric insulator, drain pipes, trash cans


Polyoxymethylene (POM)

POM, also known as Delrin Acetal, is a tough, low-friction semi-crystalline thermoplastic that is often used for sliding applications and mechanical parts like gears and snap fastenings.


Key featuresApplications
Excellent wear resistance, strong and durable, high tensile strengthMechanical parts like bearings and gears, safety systems, snap-fits


Acrylic (PMMA)

With injection moulding, PC and PMMA are the two main materials of choice for transparent parts. Acrylic can stand against weathering and has high gloss and good abrasion resistance. Overall, it is an excellent alternative to glass.


Key featuresApplications
Impact strength, good abrasion resistance, exceptional weatherabilityAutomotive and aircraft windshields, mobiles screens, headlights and lenses


Nylon (PA)

Polyamide (PA) is a strong, durable thermoplastic and an excellent alternative to metal components in high-temperature environments, like gears, bearings and other types of high-friction machinery and components. The most commonly used nylon grades for plastic injection moulding is PA6 and PA66.


Key featuresApplications
Strong and durable, excellent tensile strength, good wear resistanceAutomotive and aircraft windshields, mobiles screens, headlights and lenses


Nylon material injection molded part with SPI grade b surface finish


Polypropylene (PP)

Injection moulded polypropylene is the most common plastic found in the automotive industry. It is a versatile thermoplastic material that is easy to mould, has good chemical resistance, and is very lightweight.


Key featuresApplications
High impact strength, good chemical and moisture resistance, semi-rigidMedical products and tools, automotive exterior components like car bumpers


Injection molding PP Material


Polycarbonate + Acrylonitrile Butadiene Styrene (PC/ABS)

PC/ABS plastic is one of the most widely used materials for plastic injection moulding due to its combination of strength and heat-resistance offered by PC and the flexibility offered by ABS. It can be modified to fit a variety of needs through the addition of additives such as glass fiber, mineral fillers and flame retardant.


Key featuresApplications
Good heat resistance, high impact strength, low overall shrinkageComputer hardware, automotive interior and exterior components, electrical housings


Thermoplastic Polyurethane (TPU)

TPU is a type of thermoplastic elastomer (TPE) but can be injection moulded to produce a harder rubber with high durometer. It has gained widespread popularity due to its excellent ability to withstand extreme temperatures, as well as its resistance to chemicals and abrasion. It is available in commercial, medical, and industrial grades, making it a versatile material for a range of applications.


Key featuresApplications
High elasticity, high abrasion resistance, good durabilityAutomotive wheels and gears, sports equipment, medical devices



Sourcing custom injection moulded parts

Choosing the best material for your next injection moulding project can be a challenging task, given the vast array of resins available. Fortunately, we can help you through this process. Upload your CAD files here, provide us with as much information about the intended application and use of the parts, and our experts will be able to assist you in selecting the resin that best aligns with your requirements.

Home Banner

Put your parts in production today

Get an instant quote