What is ABS Injection Molding?

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By Jeremy Losek, Nov 3rd, 2022

What is ABS? 

Acrylonitrile butadiene styrene (ABS) is a rigid, lightweight plastic that is both durable and impact resistant. ABS is made up of the three monomers acrylonitrile, butadiene, and styrene – hence the abbreviation ABS. Each of the monomers plays an important role in the composition of the final plastic. The acrylonitrile gives the final product heat and chemical resistance. The butadiene is used for impact resistance. The styrene provides extra strength and a glossy finish. ABS is used to make appliances, toys, medical supplies, musical instruments, computer parts, and more. One of the most recognizable examples of ABS injection molding is the little plastic LEGO® brick. LEGO® bricks exhibit all the qualities that makes ABS an ideal material for a wide array of projects. LEGO® bricks are tough, scratch resistant, impact resistant, and have a smooth, glossy finish.  

ICOMold by Fathom is an expert at ABS injection molding and can provide customers of all sizes with a seamless manufacturing process from prototype to production. 

Is ABS Plastic Strong?

ABS is a thermoplastic polymer widely used for injection molding. ABS is durable, budget -friendly, and is easy to machine. ABS can be used in conjunction with a metal coating since many metals will adhere strongly to the surface of ABS plastic. ABS plastic has good resistance to extreme temperature and humidity. ABS is perfect for projects that demand strength, stiffness, and impact resistance. ABS is an ideal candidate for secondary processing as it can easily be painted or glued. ABS is also very easy to recycle.

ABS injection molding done at a high temperature produces resistance to heat and a smooth, gloss finish. ABS injection molding done at a lower temperature will result in better strength and impact resistance. The final properties and strength of any ABS injection molding product will be influenced by the condition parameters used during the manufacturing process. The experts at ICOMold can help customers select the correct parameters for their next ABS injection molding project.

Why is ABS good for Injection Molding?

ABS injection molding offers numerous benefits over other plastic materials. ABS plastic is easy to mold and has good machinability. It has high impact and tensile strength, dimensional stability, stiffness, and excellent stability under load. ABS can maintain its characteristics and performance in extreme temperatures but also has a low melting temperature — making it easy to use when injection molding. ABS can be alloyed with other polymers to achieve desired characteristics. ABS can also be colored for custom pieces and is easy to paint and glue, making it a good candidate for secondary processing.

ABS plastic is recyclable. Using a combination of virgin ABS plastic mixed with recycled ABS can help customers reduce overall costs. The ABS is shredded and then purified to remove any undesirable metals or plastics during the recycling process. The leftover product is then analyzed and combined with virgin ABS to produce a new product that is ready for injection molding.

ABS plastic should not be used under direct sunlight or near an open flame. Fire-retardant and heat-resistant grades of ABS are available. Some ABS components can emit toxic fumes after heating.

How can ABS be Molded?

ABS plastic begins as a pellet. The pellet is then melted into a moldable state and injected into the cavity of a two-part mold. The plastic will solidify almost as soon as the mold has been filled. The part then cools to the shape of the mold. The mold opens once the plastic has fully cooled and the part is ejected. The mold is closed and the process starts over.

ICOMold by Fathom has the expertise to help meet your ABS injection molding needs. We offer fast and dependable service, low prices, quick quotes, and an online project management system. ICOMold by Fathom can handle projects of any size – from small part or prototype runs to extended part runs in the thousands or even millions.

Please feel contact us at (419) 867-3900 or sales@icomold.com.

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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