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Second slide



Injection Molding Materials

There are many varieties of materials that will be utilized in the injection molding process. Most polymers is also used including all thermoplastics, some thermosets and a few elastomers.

When these materials are used in the injection molding method, their raw kind is sometimes little pellets or a fine powder. Also, colorants is also added within the method to manage the colour of the final part.

The selection of a material for making injection molded parts isn't only based upon the specified characteristics of the final part. While each and every material has different properties that may have an affect on the strength and performance of the final part, these properties also state the parameters that used in process of these materials.

Each material needs a different set of processing parameters within the injection molding process, aw well as the injection temperature, injection pressure, mold temperature, ejection temperature and cycle time.

A comparison of commonly used materials is shown below.




Material name Trade names Abbreviation Applications Description
Acetal Celcon, Delrin, Hostaform, Lucel POM Bearings, cams, gears, handles, plumbing components, rollers, rotors, slide guides, valves Strong, rigid, excellent fatigue resistance, excellent creep resistance, chemical resistance, moisture resistance, naturally opaque white, low/medium cost
Acrylic Diakon, Oroglas, Lucite, Plexiglas PMMA Display stands, knobs, lenses, light housings, panels, reflectors, signs, shelves, trays Rigid, brittle, scratch resistant, transparent, optical clarity, low/medium cost
Acrylonitrile Butadiene Styrene Cycolac, Magnum, Novodur, Terluran ABS Automotive (consoles, panels, trim, vents), boxes, gauges, housings, inhalors, toys Strong, flexible, low mold shrinkage (tight tolerances), chemical resistance, electroplating capability, naturally opaque, low/medium cost
Cellulose Acetate Dexel, Cellidor, Setilithe CA Handles, eyeglass frames Tough, transparent, high cost
Polyamide 6 (Nylon) Akulon, Ultramid, Grilon PA6 Bearings, bushings, gears, rollers, wheels High strength, fatigue resistance, chemical resistance, low creep, low friction, almost opaque/white, medium/high cost
Polyamide 6/6 (Nylon) Kopa, Zytel, Radilon PA6/6 Handles, levers, small housings, zip ties High strength, fatigue resistance, chemical resistance, low creep, low friction, almost opaque/white, medium/high cost
Polyamide 11+12 (Nylon) Rilsan, Grilamid PA11+12 Air filters, eyeglass frames, safety masks High strength, fatigue resistance, chemical resistance, low creep, low friction, almost opaque to clear, very high cost
Polycarbonate Calibre, Lexan, Makrolon PC Automotive (panels, lenses, consoles), bottles, containers, housings, light covers, reflectors, safety helmets and shields Very tough, temperature resistance, dimensional stability, transparent, high cost
Polyester - Thermoplastic Celanex, Crastin, Lupox, Rynite, Valox PBT, PET Automotive (filters, handles, pumps), bearings, cams, electrical components (connectors, sensors), gears, housings, rollers, switches, valves Rigid, heat resistance, chemical resistance, medium/high cost
Polyether Sulphone Victrex, Udel PES Valves Tough, very high chemical resistance, clear, very high cost
Polyetheretherketone   PEEKEEK Aircraft components, electrical connectors, pump impellers, seals Strong, thermal stability, chemical resistance, abrasion resistance, low moisture absorption
Polyetherimide Ultem PEI Electrical components (connectors, boards, switches), covers, sheilds, surgical tools Heat resistance, flame resistance, transparent (amber color)
Polyethylene - Low Density Alkathene, Escorene, Novex LDPE Kitchenware, housings, covers, and containers Lightweight, tough and flexible, excellent chemical resistance, natural waxy appearance, low cost
Polyethylene - High Density Eraclene, Hostalen, Stamylan HDPE Chair seats, housings, covers, and containers Tough and stiff, excellent chemical resistance, natural waxy appearance, low cost
Polyphenylene Oxide Noryl, Thermocomp, Vamporan PPO Automotive (housings, panels), electrical components, housings, plumbing components Tough, heat resistance, flame resistance, dimensional stability, low water absorption, electroplating capability, high cost
Polyphenylene Sulphide Ryton, Fortron PPS Bearings, covers, fuel system components, guides, switches, and shields  Very high strength, heat resistance, brown, very high cost
Polypropylene Novolen, Appryl, Escorene PP Automotive (bumpers, covers, trim), bottles, caps, crates, handles, housings Lightweight, heat resistance, high chemical resistance, scratch resistance, natural waxy appearance, tough and stiff, low cost.
Polystyrene - General purpose Lacqrene, Styron, Solarene GPPS Cosmetics packaging, pens Brittle, transparent, low cost
Polystyrene - High impact Polystyrol, Kostil, Polystar HIPS Electronic housings, food containers, toys Impact strength, rigidity, toughness, dimensional stability, naturally translucent, low cost
Polyvinyl Chloride - Plasticised Welvic, Varlan PVC Electrical insulation, housewares, medical tubing, shoe soles, toys Tough, flexible, flame resistance, transparent or opaque, low cost
Polyvinyl Chloride - Rigid Polycol, Trosiplast UPVC Outdoor applications (drains, fittings, gutters) Tough, flexible, flame resistance, transparent or opaque, low cost
Styrene Acrylonitrile Luran, Arpylene, Starex SAN Housewares, knobs, syringes Stiff, brittle, chemical resistance, heat resistance, hydrolytically stable, transparent, low cost
Thermoplastic Elastomer/Rubber Hytrel, Santoprene, Sarlink TPE/R Bushings, electrical components, seals, washers Tough, flexible, high cost