APPENDIX 2 TYPICAL MECHANICAL PROPERTIES OF NON-METALS Material Young's Tensile Compressive Elongation modulus strength strength (maximum) of elasticity E (MN/m2) (MN/m2) % (GN/m2) Acetals 69 124 75 Cellulose acetate 1.4 41 207 20 Cellulose nitrate 1.4 48 138 40 Epoxy(glass filler) 145 234 Hard rubber 3.0 4 Melamine 8.0 55 227 0.7 Nylon filaments 4.1 340 Polycarbonate -unreinforced Makralon 2.3 70 83 100 Reinforced Makralon 6.0 90 8 Polyester (unfilled) 2.0 41 二 2 Polyethylene H.D. 28 22 100 Polyethylene L.D. Polypropylene 10 800 34 510 250 Polystyrene 3.4 20 76 12 Polystyrene-impact resistant 1.4 38 41 80 P.T.F.E. 34 248 70 P.V.C.(rigid) 3.4 50-60 69 40 P.V.C.(plasticised) 20 0.7 200 Rubber(natural-vulcanised) 二 7-34 Silicones (elastomeric) 1.5-6 二 Timber 9.0 70 Urea (Cellulose filler) 10.0 62 241 0.7 Data taken in part from Design Engineering Handbook on Plastics(Product Journals Ltd). 535APPENDIX 2 TYPICAL MECHANICAL PROPERTIES OF NON-METALS Material Young’s Tensile Compressive Elongation modulus strength strength (maximum) (GN/m2) of elasticity E (MN/m2) (MN/m2) 8 Acetals - 69 124 75 Cellulose acetate 1.4 41 207 20 Cellulose nitrate 1.4 48 138 40 Hard rubber 3 .O 48 Melamine 8 .O 55 227 0.7 Polycarbonate - unreinforced Reinforced Makralon 6 .O 90 - Epoxy (glass filler) - 145 234 - Nylon filaments 4.1 340 - - Makralon 2.3 70 83 100 8 2 Polyethylene L.D. - 10 - 800 Polypropylene - 34 5 10 250 - - Polyester (unfilled) 2 .o 41 - Polyethylene H.D. - 28 22 100 Polystyrene 3.4 20 76 1.2 Polystyrene - impact resistant 1.4 38 41 80 P.V.C. (rigid) 3.4 50-60 69 40 P.V.C. (plasticised) - 20 0.7 200 Rubber (natural-vulcanised) - 7-34 - - Silicones (elastomeric) - 1.5-6 - - P .T .F .E. - 34 248 70 Timber 9 .O 70 - - Urea (Cellulose filler) 10.0 62 24 1 0.7 * Data taken in part from Design Engineering Handbook on Plastics (Product Journals Ltd). 535