Z n A l 4 C u 1
EN1774 ZL0410, ASTM B86 (AC4 A), R301(ZnAl4Cu1)

Mazak 5 like Mazak 3 can be cast by the hot chamber diecasting process. Mazak 5 is preferred where its slightly higher tensile strength and hardness are desired or wherer maximum castability is required.

As cast dimentional stability is not quite as good as that of Mazak 3. Mazak 5 is easily machined and formed and can be readily finished by a variety of techniques including painting, powder coating and electroplating where required.

Mechanical Properties	As-cast	Aged
Tensile Strength (MPa)	328	269
Shear Strength (MPa)	262
Elongation (% in 51mm)	7	13
Hardness (Brinell - 500Kg)	91	80
Impact Strength (Energy, Joules)	65.1	54.2
Fatigue Strength 5 x 108 cycles (MPa)	56.5

Physical properties
Density	6.7 Kg/dm3 at 21°C
Solidification shrinkage	1.17%
Casting shrinkage	0.6% (pressure diecast)
Freezing range	380 - 386°C
Casting temperature	400 - 420°C
Specific heat capacity	418.7 J/Kg/°C at 20 - 100°C
Thermal expansion	27.4 x 10-6 linear per °C at 20 - 100°C
Thermal conductivity	108.9 W/m/hr/m2/°C at 70 - 140°C
Electrical conductivity	26% IACS
Electrical resistance	6.5359 μ ohm cm at 20°C

TYPICAL ANALYSIS

Alloying elements
Aluminum	4.0%
Copper	0.8%
Magnesium	0.05%

Impurities
Iron	< 0.01%
Lead	< 0.003%
Cadmium	< 0.003%
Tin	< 0.001%
Nickel	< 0.001%
Thallium	< 0.02%
Indium	< 0.0005%
Manganese	< 0.01%