I  N  N  O  V  A  T  O  R  S    W  I  T  H    Z  I  N  C

M A Z A K  1 2

Z n A l 1 1 C u 1
EN1774 ZL1110

A general purpose foundry alloy offering an excellent combination of physical and mechanical properties and castability. Notable are its hardness, tensile strength, machinability and bearing properties.

The alloy can be cast by a wide variety of methods, sand, gravity die and graphite mould being the most common, but cold chamber pressure diecasting, shell moulding, plaster casting and investment casting are also successful.

ZA12 is a useful replacement for ferrous materials, its higher first cost frequently being more than made up for by reductions in machining and finishing costs

Mechanical Properties As-cast Aged Sand Gravity
Tensile Strength (MPa) 404 310 275 - 317 310 - 345
Yield Strength (MPa) 320 241 207 268
Shear Strength (MPa) 296 234 255 241
Elongation (% in 51mm) 4 - 7 10 1 - 2 1 - 2
Hardness (Brinell-500Kg) 100 - 106 91 92 - 96 85 - 95
Impact Strength (Energy, Joules) 42 17 25
Fatigue Strength 5 x 108 cycles (MPa) 103 103 52


Physical properties  
Density 6,000 Kg/m3 at 21°C
Solidification shrinkage 1.25%
Casting shrinkage 0.7% (pressure diecast)
Freezing range 377 - 432°C
Casting temperature 470 - 530°C
Specific heat capacity 450 J/Kg/°C at 20 - 100°C
Thermal expansion 24.2 x 10-6 linear per °C at 20 - 100°C
Thermal conductivity 116 W/m/hr/m2/°C at 70 - 140°C
Electrical conductivity 28.3% IACS
Electrical resistance 6.1 u ohm cm at 20°C


TYPICAL ANALYSIS

Alloying elements  
Aluminum 11.1%
Copper 0.9%
Magnesium 0.025%
 
Impurities  
Iron < 0.05%
Lead < 0.003%
Cadmium < 0.003%
Tin < 0.001%
Nickel < 0.005%
Thallium < 0.001%
Indium < 0.0005%
Manganese < 0.01%