APPENDIX 3 OTHER PROPERTIES OF NON-METALS* Chemical resistance Max. Acids Alkalis useful Organic temp. Material Solvents Weak Strong Weak Strong (C) Acetal × + 00 中 + 90 Acrylic Varies + x-0 + + 90 Nylon 66 00 X 150 Polycarbonate Varies × 0 ×-0 N 120 Polyethylene LD X × ×00 90 Polyethylene HD + + ×0 + 120 Polypropylene X ×-0 150 Polystyrene Varies × ×0 95 PTFE × 240 PVC Varies + ×0 80 Epoxy + 430 Melamine X × 00 0 100-200 Phenolic ×0 000 000 00 200 Polyester/glass ×-0 0 00 0 00 250 Silicone ×-0 ×-0 00 0-00 00 180 Urea ×0 ×0 00 0-00 00 90 x-Resistant,0-slightly attacked,00-markedly attacked Data taken from Design Engineering Handbook on Plastics.(Product Journals Ltd). xxiiiAPPENDIX 3 OTHER PROPERTIES OF NON-METALS* Material Acetal Acrylic Nylon 66 Polycarbonate Polyethylene LD Polyethylene HD Polypropylene Polystyrene PTFE PVC EPOXY Melamine Phenolic Polyesterjglass Silicone Urea Organic Solvents X Varies Varies X X X X Varies Varies X X X X x -0 x -0 x -0 Chemical resistance Acids Weak X X X X X X X X X X X X X-0 0 X-0 X-0 Strong 00 X-0 00 0 X00 X-0 X-0 X-0 X-0 00 000 00 00 00 X X Alkalis Weak X X X x -0 X X X X X X X X (roo 0 0-00 (Mo Strong X X X 00 X X X X X X 0 0 00 00 00 00 x - Resistant, 0 -slightly attacked, 00 -markedly attacked Max. useful temp. ('C) 90 90 150 120 90 120 150 95 240 80 430 100-200 200 250 180 90 * Data taken from Design Engineering Handbook on Plastics. (Product Journals Ltd). xxiii