Proto Processes 3DP-HIPS (High Impact Polystyrene)

Material Description

High Impact Polystyrene (HIPS) is a versatile thermoplastic material known for its exceptional combination of strength, toughness, and ease of processing. Composed primarily of polystyrene and an elastomeric impact modifier, HIPS exhibits a range of notable material properties. It boasts high tensile strength, typically falling in the range of 8,000 to 10,000 psi, making it suitable for load-bearing applications. HIPS is also characterized by its excellent impact resistance, thanks to the elastomeric component, which enables it to absorb and dissipate energy, preventing brittle fracture. With a relatively low density of around 1.05 g/cm³, HIPS is lightweight and offers good dimensional stability. Moreover, it can be easily molded, extruded, or thermoformed, owing to its low melting point (around 200°C) and good flow properties, making it a popular choice for injection molding and sheet extrusion processes. It has a smooth, glossy surface finish and can be readily painted or printed upon. HIPS is an affordable and readily available material, making it widely used in a variety of applications, including consumer goods, packaging, toys, and even healthcare products.

Common Industry Applications

HIPS (High Impact Polystyrene) is commonly found in packaging, consumer goods, and toys for its toughness and ease of processing.


3D Printing – Fused Deposition Modeling (FDM)

Strength (MPa)
Strength (J/m)
Temp (°C)
1.03 - 1.0725 - 4040 - 8010 - 5080 - 950.15 - 0.295 - 105Sensitive to
UV radiation

Design Recommendation

When using HIPS for 3D printing, design for dissolvability in limonene or similar solvents used to remove support structures. Adequate ventilation may be necessary when working with limonene. Prioritize strength and impact resistance, and consider the need for support structures. Ensure good layer adhesion for structural integrity.

Cost Saving Tip

Cost-saving strategies for HIPS 3D printing involve optimizing support structures and reducing material waste. This includes adjusting support density, orientation, and infill settings to minimize the use of HIPS filament for supports. Recycling or reusing excess material can help cut costs, and maintaining a controlled printing environment, including temperature and humidity, is crucial to prevent warping and maintain print quality, reducing the need for reprints.