2.1 BM - METALS

Process of shaping material by forcing it to flow through a shaped opening in a die.

• Casting

• Stamping

• Forging

• Extrusion

A ductile, malleable, reddish-brown metallic element that is an excellent conductor of heat and electricity.

• Aluminum

• Copper

• Bronze

• Brass

A ductile malleable, silver-white metallic element that is used in forming many hard, light alloys, often anodized for better corrosion resistance, color and surface hardness.

• Copper

• Brass

• Aluminum

• Lead

This aluminum finish is commonly referred to as anodized finishes, which are based on the specific ability of aluminum to develop a protective coating of oxide on its surface.

• Organic finishes

• Chemical finishes

• Electrolytic Oxide finishes

• Mechanical finishes

This kind of finish uses mechanical tools or equipment to obtain a wide range of finishes by grinding, polishing, scratching, sandblasting, embossing or other treatment of the surface to achieve a desired effect or to provide a base for other finishes.

• Chemical finishes

• Mechanical finishes

• Electrolytic Oxide Finishes

• Organic finishes

Alloy of copper and zinc.

• Brass

• Bronze

• Lead

• Aluminum

Alloy of copper and tin.

• Lead

• Brass

• Zinc

• Bronze

Used for roofing, flashing, gutter, etc.

• Aluminum foil

• Corrugated aluminum

• Aluminum sheet and strip

• Aluminum mesh and wire cloth

These are generally fabricated from extrusions and rolled shapes

• Structural aluminum

• Aluminum panels

• Corrugated aluminum

• Aluminum doors and windows

Upon exposure to air and salt water, copper immediately reacts to form a surface layer of an insoluble green salt which retards further corrosion and this green color is known as (a)