Screw material & Application
Aluminum screws are light, resistant to oxidation, thermal and electrical conducive, and easy to manufacture.
Brass screws are strong, conductive, and corrosion resistant, with low magnetic permeability.
Copper alloy screws have good load capacity, wear resistance, and are suitable for use near magnets.
Plastic screws are inexpensive and corrosion resistant for light loads. They are common for applications near water, such as pools.
Steel screws are produced of strong, carbonated iron. Uncoated steel is vulnerable to corrosion.
Hardened steel screws are stronger than steel screws, but more brittle. They are made of steel treated by tempering and quenching methods.
Stainless steel screws are chemical and corrosion resistant with an appealing finish. They cannot be hardened like carbon steel.
Screws consisting of super alloys exhibit good mechanical strength, surface stability, corrosion resistance, and resistant to creep at high temperatures. Common super alloys include Hastalloy, Inconel, Incoloy, and Monel.
Titanium screws are hard and strong, light, and corrosion resistant. When alloyed with other metals, it increases strength and durability.