Brass is a metal composed primarily of copper and zinc. Copper is the main component, and brass is usually classified as a copper alloy.
The color of brass varies from a dark reddish-brown to a light silvery yellow depending on the amount of zinc present; the more zinc, the lighter the color.
Brass is stronger and harder than copper, but not as strong or hard as steel. It is easy to form into various shapes, a good conductor of heat, and generally resistant to corrosion from saltwater. Because of these properties, brass is used to make pipes and tubes, weather-stripping and other architectural trim pieces, screws, radiators, musical instruments, and cartridge casings for firearms.
Brass is also commonly used for decorative purposes because it resembles gold.
Acrylic is a transparent plastic material with outstanding strength, stiffness, and optical clarity.
Acrylic sheet is easy to fabricate, bond well with adhesives and solvents, and is easy to thermoform.
It has superior weathering properties compared to many other transparent plastics. Acrylic sheet exhibits glass-like qualities—clarity, brilliance, and transparency—but at half the weight and many times the impact resistance of glass.
From durable signs and skylights to eye-catching retail store fixtures, displays and shelves, acrylic plastics provide outstanding versatility, durability, and aesthetic qualities.
Aluminum is a silvery-white metal. It is the third most common chemical element after oxygen and silicon also makes up about 8% of the Earth's crust.
It is one of the lightest metals in the world but also very strong, extremely flexible, and corrosion-resistant because its surface is covered in an extremely thin and yet very strong layer of the oxide film.
Not only the aircraft and aerospace industries but also the pen manufacturers have long relied upon aluminum alloys.