APPENDIX 1 TYPICAL MECHANICAL AND PHYSICAL PROPERTIES FOR ENGINEERING METALS Young's Shear “Elastic'" Shear Tensile Ultimate Percentage Density Linear modulus modulus limit yield strength strength elongation coefficient Material of G Gy strength in shear of thermal elasticity expansion E(GN/m2) (GN/m2) (MN/m2) (MN/m2) (MN/m2) (MN/m2) (%) (kg/m3) (×10-6/PC) Aluminium alloy 69 2 230 390 240 23 2770 23 Brass 102 38 350 0 8350 18.9 Bronze 115 210 310 20 7650 18 Cast iron:Grey 90 210 7640 10.5 Malleable 170 83 248 166 370 330 12 7640 12 Low carbon (mild)steel 207 280 175 480 350 2 7800 11.7 Nickel-chrome steel 208 82 1200 650 1700 950 12 7800 11.7 Titanium 10 480 二 551 4507 9.5 Magnesium 5 17 262 379 165 1791 28.8