An environmentally friendly alternative to PVC. White, matte, slightly bendable Polypropylene sheet. Good tensile strength and resistance to chemicals. Compared to PVC, PP is harder and more heat and abrasion-resistant.
White matte, with slight sheen PVC plastic, slightly bends. May yellow over time when exposed to sunlight. PVC is heavier and stronger than other plastics but is manufactured with the addition of a plethora of toxic additives, which can make it harmful to consumers when burnt.
Corrosion-resistant, durable, heatproof steel, more expensive than tinplate and aluminum. Stronger and harder to form than aluminum. 5 or 6% heavier than mild steel. Salt-corrosive, may discolor and rust in long-time weathering.