PERFORMANCE CHART - ZINC ALLOY & ALUMINUM CASTINGS MEASURE UP
                                                                     ZINC ZINC               ALUMINUM      
    ZAMAK ZAMAK  ZAMAK ZAMAK ZA -8**   ZA-12**             ZA-27*** 380 319 356-T6
ALLOY PROPERTY  2** 3**  5**  7**                    
  DIE  DIE  DIE  DIE  SAND PERM  DIE  SAND  PERM  DIE  SAND  PERM  DIE  DIE  GRAPHITE PERM SAND  SAND GRAPHITE
      CAST CAST CAST CAST  CAST MOULD CAST CAST MOULD CAST CAST MOULD CAST CAST Prm Mld MOULD CAST  CAST Prm Mld
     MECHANICAL                                      
Ultimate Tensile   ksi x 10³ 52 41 48 41 38 35 54 43 48 59 61 64 62 47 29.5 34 27 33 39.5
Strength                  M Pa 359 283 331 283 263 240 374 299 328 404 421 441 426 324   234 186 228  
Yield Strength       ksi x 10³ NA 32 33 NA 29 30 42 31 39 46 54 55 54 24 22   18 24 31.8
0.2 % Offset           M Pa   221 228   198 208 290 211 268 320 371 376 371 165     124 165  
Elongation             (% in 2") 7 10 7 13 1.7 1.3 8 1.5 2.2 5 4.6 2.5 2.5 3 0.84 2.5 2 3.5 4
Young's                  ksi x 10 6th >12.4 >12.4 >12.4 >12.4 12.4 12.4 12.4 12 12 12 11.3 11.3 11.3 10.3     10.7 10.5  
Modulus                M Pa x 10³ >85.5 >85.5 >85.5 >85.5 85.5 85.5 85.5 82.7 82.7 82.7 77.9 77.9 77.9 71     73.8 72.4  
Torsional               psi x 10 6th NA NA NA NA 4.8 4.8 4.8 4.6 4.6 4.6 4.3 4.3 4.3 3.9     4 3.9  
Modulus                M Pa x 10³         33.1 33.1 33.1 31.7 31.7 31.7 29.6 29.6 29.6 26.9     27.6 26.9  
Shear                       ksi x 10³ 46 31 38 31 NA 35 40 37 >35 43 42 NA 47 27     22 26  
Strength                 M Pa 317 214 262 214   241 275 253 241 296 292   325 186     152 179  
Hardness              (Brinell) 100 82 91 80 85 87 103 94 89 100 113 114 119 80 85.6 85 70 70  
Impact                    ft-lb 35 ² 43² 48² 43² 15¹ NA 31² 19 NA 21² 35¹ NA 9² 3¹     4¹ 8¹  
Strength                J   47 58 65 58 20   42 25   29 48   13 4     5 11  
Fatigue Strength                                        
Rotary Bend          psi x 10³ 8.5 6.9 8.2 6.8 NA 7.5 15 15 NA 17 25 NA 21 20     10 8.5  
(5 x 10 cycles)        MPa 58.6 47.6 56.5 46.9   51.7 103 103   117 172   145 138     69 58.6  
Compressive                                        
Yield Strength       ksi x  10³ 93 6th 60 6th 87 6th 60 6th 29 31 37 33 34 39 48 NA 52 17   19 19 25  
0.1% Offset            Mpa 641 414 600 414 199 210 252 230 235 269 330   359       131 172  
       PHYSICAL              
Density                   lb/in³ 0.24 0.24 0.24 0.24   0.227     0.218   0.181   0.1   0.101 0.097  
                                  Kg/m³ 6600 6600 6700 6600   6300     6030   5000     2713   2796 2685  
    715- 718- 718- 718-         1000-     1035-  
Melting                       F ºF   734 728 727 728 707-759   710-810      708-903   1100   960-1120 1135  
Range                  C ºC   379- 381- 381- 381- 375-404   377-432       376-484   538-   516-604 557-  
    390 387 386 387                 593     613  
Electrical                                    
Conductivity (% IACS) 25 27 26 27   27.7     28.3   29.7 27   27 39  
Thermal                Btu/ft-hr F 60.5 65.3 62.9 65.3 66.3     67.1   72.5 55.6     65.5 87  
Conductivity       W/m K 104.7 113 108.9 113   114.7     116.1   125.5 96.2     113.4 151  
Coef of Thermal   15.4 15.2 15.2 15.2 12.9   13.4   14.4 11.8     11.9 11.9  
Expansion (68-212 ºF) 27.7 27.4 27.4 27.4   23.3     24.2   26 21.2     21.4 21.4  
Pattern Shrinkage 1/ºFx10 6th 0.006 0.006 0.006 0.006 0.01 0.01 0.013   0.0075 0.013 0.008 0.01     NA NA  
in/in or mm/mm 1/ºCx10 6th                                      
  Indicates Forest City Castings Standard Alloy's & Properties