ABS (acrylonitrile–butadiene–styrene) copolymer: which classification best fits ABS in engineering usage?

Introduction / Context:
ABS blends toughness from rubbery butadiene with rigidity from styrene–acrylonitrile. It is injection-moulded into housings, automotive parts, and appliances—hallmarks of engineering plastics.

Concept / Approach:
Engineering plastics are thermoplastics with improved mechanical and thermal performance over commodity resins. ABS fits this category, not thermosets or foams by default.

Final Answer:
Engineering plastic