Architectural Metals Custom Brass, Bronze & Nckel Silver Extrusions


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Mac Metals Inc. is a brass extrusion mill having its origins in a company founded in Germany in the 1850’s by the Rothschild family. After the family moved to the United States, the business was reopened under the name 'Kearny Smelting & Refining Corporation' and produced brass ingot for the memorial industry. In 1960 a brass extrusion press was added to the operation to address the need for a domestic source of custom architectural extrusions. Due to the rapid growth of the extrusion mill, Kearny Smelting purchased a metal service center; Metal Alloys Company, in 1982 as a means to establish a modern sales and distribution network. Further growth resulted in the closing of the ingot shop to devote the casting resources to manufacture billets for the extrusion press.

Today, Mac Metals devotes all of its resources in providing custom extrusions and services to our customers. We are still a family owned business, proud to work with the best materials and processes in the industry. We continue to invest in our staff and equipment to bring our customers "world –class" custom extrusions in brass, bronze and nickel silver.

 Capacities & Capabilities

Experienced Personnel

Mac Metals is very proud of staff. Our management team has many years of combined experience in the extrusion process and copper alloy manufacture. Our manufacturing staff has an average of over twenty years in all aspects of extrusion production.

In-House Die and Tooling Capabilities

Mac Metals offers a wide variety of extruded shapes employing state-of-the-art CAD/CAM systems in a fully equipped machine shop. Our tooling experts work with our customers to make their designs most efficient for the extrusion process. This collaboration early in the design process ensures a cost-effective product.

Extrusion Press and Processing Equipment

Our casting shop converts raw materials (90% recycled scrap product) into 5” billets. Each heat, or pour, is sampled and tested for proper chemistry and assigned a permanent identification number for complete traceability—billet by billet.

Billets are heated in a state-of-the-art induction furnace and extruded into a pre-finished length suitable for stretching, straightening and cutting to the specific requirements of our customer.

Our ability to deliver uniform product is dependant on custom finishing equipment and skilled craftsmen that handle each length individually. The end result is an extruded product that achieves consistent color match along with exceptional straightness, flatness and dimensional tolerances. Critical geometry is checked at every production station in the finishing process.