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Plastic injection molding non-toxic material - ABS

ABS Injection Moulding Material
— A Complete Guide

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Considering ABS injection moulding for your next plastic project? Learn about the properties of ABS material, its pros and cons, as well as common applications and alternative material options.

 

What is Acrylonitrile Butadiene Styrene (ABS)?

Acrylonitrile Butadiene Styrene (ABS) is one of the most common plastic material available and often regarded as a “safe” thermoplastic polymer for injection moulding. This is because ABS resin is non-toxic, durable, has high impact resistance and good chemical resistance, relatively low cost, and compatible with many surface finishes including chrome plating.

 

  • The “A” in ABS, acrylonitrile, imparts hardness along with heat and chemical resistance.
  • The “B”, which stands for butadiene, provides toughness and impact resistance.
  • The “S”, for styrene, offers gloss, strength, and processability.

 

Overall, ABS is a very versatile material.

 

ABS plastic injection molding material

 

Injection moulded ABS material properties
Polylac® (PA-765)Cycolac (MG47)Lustran® (348)RTP (605) 30% GF
Density (g/cm3)1.191.041.061.27
Shrinkage Rate (%)0.3–0.60.5–0.80.4–0.60.1–0.2
Rockwell Hardness (R)100112112
Tensile Strength at Yield (MPa)394448.396.5
Elongation (%)10 (Break)24 (Yield)1–2 (Yield)
Flexural Modulus (GPa)1.802.302.698.27
Flexural Strength (MPa)557075.8134
Drying Temperature (°C)87.8–93.380–957982.2
Drying Time (hrs)2–242–42–42
Melt Temperature (°C)232–249220–260246–274204–238
Mold Temperature (°C)54.4–71.150–7029–6062.8–85

*Material properties of common ABS grade

 

For added strength, filler materials such as glass, nylon, acrylic, and stainless steel fibers can be added. Additives affect processing parameters, however, and different grades of ABS may contain different combinations of acrylonitrile, butadiene, and styrene

 

Advantages of ABS Injection Moulding
  • Strength and Rigidity — ABS has good mechanical properties, including high strength and stiffness, making it ideal for structural components.
  • Dimensionally Stable — ABS maintains its shape and size consistently, even during high-volume production runs where tooling can wear or processing conditions can change.
  • Good Bonding Qualities — ABS bonds well with TPE and TPU, making it ideal for overmolding applications (e.g., adding soft-touch grips to handles or buttons).
  • Excellent Surface Finish — ABS produces smooth, glossy finishes straight out of the mould and can easily be finished and post-processed for a smooth and aesthetically pleasing surface. It also provides good surfaces for finishes like chrome plating.

 

Disadvantages of ABS Injection Moulding
  • Moderate-to-Poor Fatigue Resistance — ABS performs well under static loads but is not well-suited for applications involving repeated flexing or stress cycles.
  • Limited Temperature Resistance — ABS typically has a Heat Deflection Temperature (HDT) in the range of 80–100 °C under standard loads, and will start to bend after moderate stress.
  • Poor UV Resistance — standard ABS degrades and discolour when exposed to prolonged UV-radiation. For outdoor applications, UV-stabilized ABS (or an alternative like ASA or PC) is recommended.
  • Flammability — While non-toxic in it’s finish form, ABS is classified as a combustible material. When burned or overheated, ABS can release toxic fumes. Flame-retardant additives can be used to improve its fire resistance.

 

What Is ABS material Used For?

From vacuum cleaners to kitchen appliances, ABS is a versatile material with a wide range of applications across the medical, automotive, robotics and many other industries. Some common applications include:

 

  • Electronic enclosures
  • Medical device & robotic housings
  • Automotive dashboards
  • Grilles, trims and door panels
  • Lego bricks
  • Bike helmets and protective headgears
  • Handheld devices

 

Good Alternatives to ABS

 

Polycarbonate (PC)

When higher heat resistance, toughness and impact resistance are needed, Polycarbonate (PC) is a good alternative to ABS. PC is a high-performance, engineering thermoplastic known for its exceptional toughness, dimensional stability, and transparency in clear grades. While PC is generally more expensive than ABS, it provides superior mechanical and thermal performance, making it a cost-effective upgrade in applications where durability, clarity, or heat resistance are critical.

 

PC-ABS

PC-ABS is a blend of PC and ABS, combining the strength and heat resistance of PC with the moldability and cost-effectiveness of ABS. When your application requires higher impact strength, better heat resistance, or improved toughness at low temperatures—where standard ABS might fall short—PC-ABS is the superior choice.

 

Acrylonitrile Styrene Acrylate (ASA)

For harsh outdoor and UV-exposed applications like automotive exteriors, opt for Acrylonitrile Styrene Acrylate (ASA). Like ABS, ASA has good chemical resistance and high-impact strength, but it offers superior UV stability, weather resistance, and longer-term color retention—even compared to ABS with UV additives.

 

Get Custom Injection Mould Parts in ABS Material

At HLH Rapid, we offer an extensive selection of resins to meet your custom injection moulding needs, including ABS, PC, PMMA, PP, POM, HDPE, and more. To begin your next project, simply upload your CAD drawings using our site contact form and provide the project details, such as quantity, material choice, and any surface finish requirements. Our dedicated team will respond with a quote within 48 hours or less.

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