ZL-3
The Brock Metal Company Limited
PRESSURE DIE CASTING ALLOY
ZL3 is a hot chamber pressure die casting zinc base alloy which conforms to EN 1774 1997 Ingot Specification and is one of a family of versatile high grade zinc alloys manufactured by Brock Metal.
When designing a stressed component using ZL3 further reference should be made to the alloys properties, at elevated temperatures, after natural or artificial ageing and the alloys creep properties.
Application ZL3 is a general-purpose alloy and is primarily used for producing castings for a variety of applications on a hot chamber pressure die casting machine. The alloy’s mechanical and physical properties make it ideal for use in castings for the engineering and automotive industry, household equipment and utensils, office equipment, builders hardware, locks, toys, giftware etc. ZL3 is easily machined, buffed, polished, lacquered and electroplated for decorative or functional purposes. National Specifications The composition of ZL3 conforms to the current EN 1774 1997 Standard, which is now common to all EU countries.
Alloy Composition Aluminium Magnesium Zinc
Min 3.8% 0.035% Remainder
Impurities Iron Copper Lead Cadmium Tin Nickel Silicon
-
Max 4.2% 0.06%
0.020% 0.03% 0.003% 0.003% 0.001% 0.001% 0.02%
Typical as cast physical and mechanical properties Casting Temperature Freezing Range Specific Heat Solidification Shrinkage Casting Shrinkage Thermal Conductivity at 180C Thermal Expansion Linear per 0C
C C J/gk Cm/m (in/ft) Mm/mm (in/in) W/m0C (C.G.S) 0 0
405-425 382-387 0.4187 (0.10) 1.17 (0.14) 0.006 (0.006) 113 (0.27) 28x106
Electrical conductivity at 200C Specific Gravity Density Tensile Strength at 200C Elongation at 200C Impact strength at at 200C (unnotched samples) Hardness
%age IACS
26
Kg/m3 (lb/in3) N/mm2 (lbf/in2) %in 2in J (ft.obf) BHN
6.7 6,700 (0.24) 283-241 (41,000) 10-16% 56.9 (42) 82-87
Figures relate to material in casting form. Properties vary for different processes. Further data available in the technical resource area on brockmetal.com