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Zinc
Zinc, a crystalline metal with moderate strength and ductility, is seldom used alone except as a coating. In addition to its metal and alloy forms, zinc also extends the life of other materials such as steel (by hot dipping or electrogalvanizing), rubber and plastics (as an aging inhibitor
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Not your average carbon copy
in strength and durability. Designers producing parts from aluminum, bronze, brass, and cast iron have an alternative: Graphite permanent molding (GPM). As one of the "permanent" mold processes, GPM falls into the same category as die casting. The process uses one mold to make many parts. This contrasts
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AFS Castings of the Year
fabrication. A brass permanent-mold chill casting for a steering linkage from , Greensburg, Pa., was redesigned from a weldment composed of 10 prefabricated pieces, 19 weld joints, and four bushings. The resulting 9.82-lb component was 10% lighter than the weldment and eliminated some machining
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Fastener Materials
with a specific chemical analysis adds time and cost. Often, a standard fastener can be altered by heat treating, cold working, or coating to meet special needs. Most fasteners are made from steel. Specifications cover a broad range of mechanical properties that are indicated by a bolt-head marking
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High-dazzle coatings at low temperatures
a 1.5-mm coating of TiN on top of chrome and nickel undercoatings that boost the surface stiffness of the aluminum. The TiN coating reduced friction by 35% and more than tripled the tube's fatigue life. Brass and zinc faucets originally coated with lacquer for corrosion protection and a shiny
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Copper
alloy color. An acrylic coating with benzotriazole as an additive lasts several years under most outdoor, abrasion-free conditions. Although they work harden, copper and its alloys can be hot or cold worked. Ductility can be restored by annealing or heating incident to welding or brazing operations
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AlliedSignal Automotive Brake Division Improves Productivity with ARMEX(R)
Aerospace & Automotive Architecture Cleaning & Restoration Cast Mold Cleaning Food / Beverage Processing Industrial Maintenance Marine Military Mining Petrochemical Printing Pulp and paper Railroads ARMEX Cleaning and Coating Removal Systems can be used to remove virtually any coating from almost any surface
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The right finish
die-cast components that are surface treated. The balance of components are plated with tin, brass, copper, chrome, black oxide, silver, and gold. They can also be coated with paints and powder to meet specific requirements. Nickel, a popular surface finish for die-cast zinc-alloy parts, applies over