ABS Injection Molding
Services On Aria

Acrylonitrile Butadiene Styrene (ABS) is one of the most versatile and widely used thermoplastics in the injection molding industry. Known for its excellent balance of strength, toughness, and processability, ABS is ideal for manufacturing durable, lightweight, and aesthetically appealing parts.

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What is ABS Plastic?

ABS is a terpolymer made by polymerizing styrene and acrylonitrile in the presence of polybutadiene. This unique composition gives ABS its distinctive properties:

Acrylonitrile:

Provides chemical resistance and rigidity.

Butadiene:

Contributes impact resistance and toughness.

Styrene:

Enhances processability and surface finish.

Description

Full Name

Acrylonitrile Butadiene Styrene

Process

CNC machining, Injection molding,
3D printing

Finishing options

Mold texturing，Pad printing，Laser engraving，Electroplating, Bead Blasting

Applications

Impact-resistant applications, Appliances, Housings, Toys

Prices

Features

Appearance

Black, Natural color

Strengths

Good Scratch Resistance, High Gloss, Strong toughness, Ease of processing

Tensile Strength

5500 PSI

Elongation at Break

30%

Density

1.04~1.06 g/㎤

Advantages of ABS Injection Molding

There are many benefits derived from ABS plastic molding, Some of the advantages of the material include:

Durability

ABS is highly impact-resistant and can withstand tough conditions, making it suitable for a wide range of applications.

Excellent Surface Finish

The material provides a smooth, glossy surface, which is ideal for aesthetic products.

Versatility

ABS can be molded into complex shapes with high precision, enabling the production of intricate parts.

Electrical Insulation

ABS has excellent electrical insulating properties, making it suitable for electronic components.

Good Dimensional Stability

ABS retains its shape well under varying temperature and humidity conditions.

Applications of ABS Injection Molding

ABS plastic can be easily processed and shaped, so the products made from this plastic are always diverse and rich, giving consumers many different choices.

Automotive

Dashboards

Trims

Bumpers

Interior components

Electronics

Laptop Housings

Computer Monitors

TV Frames

Remote Controls

Appliances

Vacuum Cleaners

Refrigerator Liners

kitchenware

Microwave Ovens

Industrial Components

Valves

Gears

Protective Covers

Machine Housings

ABS Injection Molding Material Properties

ABS Plastic Properties

Value

Tensile Strength (Yield) （MPa）

13.0 - 65.0

Flexural Modulus（GPa）

0.200 - 5.50

Impact Resistance (Izod Impact, Notched)

0.380 - 10.3 J/cm (0.712 - 19.3 ft-lb/in)

Maximum Service Temperature（℃）

80.0 - 100

Chemical Formula

(C8H8·C4H6·C3H3N)n

Glass Transition Temperature（℃）

108 - 109

Heat Deflection Temperature（℃）

88-89

Drying Temperature（℃）

80–90

Drying Time（hr）

1.5 Mold Temperature（℃）

45～80

Melt Temperature（℃）

190～235

Injection Pressure（MPa）

90～140

Injection Speed（ mm/sec）

240 Cooling Time（S）

10～60

Scrap Quantity（mm）

2～8

Back Pressure（MPa）

９～18

Clamping Force（ton/in2）

2～2.5

Return Speed (rpm)

70～100

Shrinkage

0.4% to 0.9%

ABS Injection Molding Design Guide

Uniformity
Wall Thickness

Try to maintain a consistent wall thickness throughout the part. Sudden changes in wall thickness can lead to sink marks, warping, and internal stresses. The ideal wall thickness for ABS is usually between 1.5 – 3.5mm. For example, if you’re designing a box – shaped part, keep the walls as close to the same thickness as possible.

Minimum Thickness

The minimum wall thickness, around 0.8 – 1mm for ABS (varying with part size and application), must ensure strength and functionality. But very thin walls pose filling challenges in injection molding.

Maximum Thickness

The wall thickness range of ABS products is generally between 1.5 ~ 5.0mm, and the maximum thickness of the thicker ABS sheet is generally 5mm ~ 10mm‌.

Rib Design

Rib thickness is 40 – 60% of adjacent wall thickness. Height is less than 3 times base width to avoid warping. E.g., for a 3mm base width rib, height < 9mm.

Bosses Design

Bosses for mounting or inserts. Outer diameter ≥ 1.5 times hole diameter. Design boss wall thickness carefully to prevent sink marks and ensure strength.

Draft Angle

For ABS parts, 1 – 2° draft angle for ≤ 50mm depth, 2 – 3° for deeper ones. Apply to all vertical surfaces parallel to mold opening.

Runner System

The runner system aims to minimize pressure loss and ensure uniform material flow in multi – cavity molds. ABS runner diameter is 4 – 10 mm based on shot size and cavity number. In cold – runner, it should be easy to remove post – molding. In hot – runner, precise temperature control is needed for proper ABS viscosity.

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ABS Injection Molding Services On Aria