Plastic is a category. Not a material specification.
Manufacturing plastics include a wide range of polymers with different strength, stiffness, temperature capability, chemical resistance, wear, moisture response, electrical behavior, processing requirements, and cost.
The manufacturing method and service environment narrow the material
Commodity Thermoplastics
Widely used polymer families can support packaging, housings, consumer goods, containers, profiles, and general-purpose molded products.
Engineering Thermoplastics
Higher-performance materials can provide improved strength, wear, temperature resistance, dimensional stability, or chemical resistance.
03Elastomers
Flexible polymer materials support sealing, vibration control, gripping, cushioning, hoses, gaskets, and compliant components.
Thermosets
Thermosetting polymers cure irreversibly and can provide thermal, electrical, dimensional, or structural performance.
Reinforced Plastics
Glass, carbon, mineral, or other reinforcement can change stiffness, strength, shrinkage, wear, and processing behavior.
Specialty Polymers
Advanced materials can support elevated temperature, low friction, chemical exposure, electrical applications, or other demanding environments.
Strength, stiffness, impact, fatigue, creep, wear, and flexibility should be evaluated over the expected service condition.
Heat can change stiffness, dimensions, strength, creep, and long-term performance.
Oils, fuels, cleaners, acids, bases, solvents, moisture, and process chemicals can affect polymer compatibility.
Some polymers absorb moisture, which can alter dimensions, mechanical properties, and processing requirements.
Shrinkage, thermal expansion, creep, orientation, molding stress, and reinforcement influence final geometry.
Melt behavior, curing, shrinkage, stock form, thermal sensitivity, tooling, machining response, cooling, and annual quantity all affect the practical manufacturing route.
Load
Determine whether the component experiences static load, impact, vibration, repeated cycling, wear, or long-term stress.
Environment
Define temperature, humidity, ultraviolet exposure, chemicals, cleaning, pressure, and outdoor conditions.
Manufacturing Method
A material appropriate for machining may not be the best option for molding, extrusion, thermoforming, or additive production.
Appearance
Color, transparency, texture, gloss, surface quality, paintability, and cosmetic requirements can influence the material choice.
Compliance
Applications may impose flame, food-contact, medical, electrical, environmental, or other material documentation requirements.
Supply
Grade availability, color, additives, minimum purchases, resin form, sheet, rod, tube, and lead time affect production planning.
Engineering thermoplastics provide another level of mechanical, thermal, dimensional, wear, and chemical performance.
Engineering Thermoplastics →