Casting Zamak

Fabricação e comercialização de Lingotes de Zamac para fundição.

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Zamak ingots for casting – this is one of the main items in Fundição Magma’s wide product portfolio. Zamak ingot for casting is considered the ideal raw material for companies in the following activity niches:

Fashion industries: They use zamak to cast rings, buckles, embellishments, loops, carabiners and pendants
Furniture industries: They use zamak in handles, brackets, feet, racks, fasteners and finishing items
Automotive industries: They use zamak in molds and components.
Metallurgical industries: They use zamak in screws, rivets, fasteners and special parts.
Hardware industries: They use zamak in locks, hinges, padlocks, bearings, springs and handles.
White goods industries: They use zamak in engine covers, corner brackets and hinges for refrigerators.

Casting Zamak benefit

The greatest benefit provided by casting Zamak is undoubtedly the low production cost. This is associated with the versatility of the alloy in the production of a huge variety of products, parts and components.

Industries that choose casting Zamak in their production lines generally do so due to the alloy’s high hardness, high tensile strength and application versatility. This is the case, for example, in the manufacture of parts, components and materials that require a fine finish and richness of detail.

Zamak is also considered ideal for casting products which production process includes chrome plating, machining and painting.

Casting ZAMAK characteristic

In general, Zamac alloys have the following characteristics and advantages for casting:

Low energy consumption
High precision part formatting
Facility for scale production
Efficiency to produce faster injection cycles
Plasticity (to generate a fine finish)
Consistency for surface treatment

The term Zamac, in fact, is an acronym formed by the initial letters of the metals that form the alloy: Zinc, Aluminum, Magnesium and Copper.

Zinc: Appears in the alloy in concentrations of 92% to 95%, giving it resistance to corrosion and natural wear, more hardness and density.

Aluminum: Element responsible for the high fluidity of ZAMAC for casting. It refines the grain and makes the alloy more resistant. In addition, it has the fundamental role of inhibiting the action of zinc on ferrous metals.

Magnesium: Incorporated into ZAMAC to compensate for the effects caused by metallic impurities. It also slightly reduces the ductility of the alloy and inhibits intergranular corrosion.

Copper: It has the role of ensuring greater creep, mechanical strength and hardness to the product.

Types of casting ZAMAK and their applications

Zamak is appropriate for casting in permanent metal or silicone molds, using injection and centrifugation techniques, which results surpass the conventional sand-casting method. Furthermore, it is possible to cast Zamac repeatedly without losing its physical-mechanical characteristics.

The need to produce different types of Zamak for casting, with different specific applications, led Fundição Magma to line up the most frequently used alloys in Brazil. They are:

ZAMAK 2: ZAMAK family alloy with greater hardness and tensile and fatigue strength. It contains, among other alloys, the highest copper content (3%). It is frequently used in the production of tools and molds for plastic injection and stamping of thin steel parts.

ZAMAK 3: It has good tensile and impact strength and resistance to corrosion. It has great ductility, castability, ease of painting and good dimensional stability. This alloy is used in several applications, such as: manufacture of faucets and locks, buckles for belts and shoes, rivets, embellishments for bags, jewelry and gas valves.

ZAMAK 5: It has properties similar to those of ZAMAK 3, however, it is more corrosion-resistant and is more easily molded. The higher proportion of copper in this alloy increases its mechanical strength and hardness. It is the most resistant to creep among the ZAMAC alloys, and one of the most used in the pressure casting process.

ZAMAK 8: This is the most appropriate alloy for the centrifugal casting process. Especially suitable for the production of small parts that demand a good surface finish and a high level of detail.

Fundição Magma Zamak Ingots

Zamac (or Zamak) Zinc alloys appear prominently in our portfolio of metal alloy solutions. In addition to it, we also produce other alloys from the ZAMAK family: ZAMAK 2, ZAMAK 3, ZAMAK 5 and Zamak 8.

Contact us and learn about our entire product line!