Lester Metals offers premium aluminum products including foil, sheet, plate and bar in rolls and sheets slit to your specifications. The thickness or gauge of the material is what determines whether it is called foil, sheet or plate. Aluminum foil material thickness ranges from .0005" to .0079". Aluminum Sheet material thickness ranges from .008" to .0125". Aluminum Plate and Bar material thickness ranges from .0125" to 5.00".
We offer high quality and fast shipping on both large and small quantities for many applications including automotive, electrical, embossing, etching, spinning, flashing, building products, manufacturing and research and development.
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Aluminum alloys with a wide range of properties are used in engineering structures. Alloy systems are classified by a number system (ANSI) or by names indicating their main alloying constituents (DIN and ISO). Selecting the right alloy for a given application entails considerations of strength, ductility, formability, workability, weldability and corrosion resistance to name a few. A brief historical overview of alloys and manufacturing technologies is available here. Aluminum is used extensively in modern aircraft due to its high strength to weight ratio.
The International Alloy Designation System is the most widely accepted naming scheme for wrought alloys. Each alloy is given a four-digit number, where the first digit indicates the major alloying elements.
• 1000 series are essentially pure aluminum with a minimum 99% aluminum content by weight and can be work hardened.
• 2000 series are alloyed with copper, can be precipitation hardened to strengths comparable to steel. Formerly referred to as duralumin, they were once the most common aerospace alloys, but were susceptible to stress corrosion cracking and are increasingly replaced by 7000 series in new designs.
• 3000 series are alloyed with manganese, and can be work-hardened.
• 4000 series are alloyed with silicon. They are also known as silumin.
• 5000 series are alloyed with magnesium, derive most of their strength from work hardening. It is suitable for cryogenic applications and low temperature work. However is susceptible to corrosion above 60°C.
• 6000 series are alloyed with magnesium and silicon, are easy to machine, and can be precipitation hardened, but not to the high strengths that 2000, and 7000 can reach.
• 7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminum alloy.
• 8000 series is a category mainly used for lithium alloys.