What’s Zamak?

Zamak alloy was created by New Jersey Zinc Company in the early 1920, his name is a German acronym of the materials composing the alloy: Zink (Zinc), Aluminium (Aluminum), Magnesium (Mg) and Kupfer (copper).

The Zamak is an alloy of Zinc, Aluminum, Magnesium and Copper. It is a non-ferrous material and versatile. Its composition gives excellent properties for the production of parts by injection molding in large quantities with high precision and reproducibility of details, apart from the machining process and reducing costs.

Manufacture of parts for casting Zamak has a number of advantages over the manufacture of aluminum injection. These advantages are translated to especially in saving time, costs and best finishes of the pieces:

– The Zamak requires less energy consume for processing, it melts at 380-385 ° C.
– Injection pressure Zamak enables high-volume manufacturing parts with high precision.
– The manufacture of injection parts Zamak allow easily play all the details of the parts regardless of the machining process and reducing costs.
– Injection cycles faster.
– Save mechanized.
– The parts made of Zamak allow better finishes and surface treatments (paints, chrome, gold, brushed aluminum, zinc, etc..).

– Aleación base: Zinc.
– Based Alloy: Zinc.
– Aluminum: At 3.8 – 4.2
– Magnesium: Mg 0.035 to 0.06
– Copper: Cu 0.7 – 1.1
– Iron: Fe max. 0.020
– Lead: Pb max. 0.003
– Cadmium: Cd max. 0.003
– Tin: Sn max. 0.001
– Nickel: Ni max. 0.001
– Silicon: If max. 0.02

– Density at 20 ° C (g/cm3) 6.7
– Melting range (° C) 380-385
– Casting temperature (° C) 410-430
– Contraction during solidification process: (mm / m) 5
– Heat of Fusion (kJ / kg) 105
– Specific heat (J / Kg.K) 419
– Thermal conductivity (W / mK) 108
– Electrical conductivity (% IACS) 26

Tensile strength (N/mm2) 280-350
– Elongation: (%) 3-8
– Brinell Hardness: 85-105
– Impact Resistance: (J) 65
(6.35 x 6.35 Charpy without notching)

Zamak means making a choice under the sign of the efficiency and quality

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