Easy-open lid aluminum alloy 3004/3104/5182

The convenient-to-open (Easy Open) lid construction typically employs 5182 aluminum alloy, renowned for its exceptional formability, robust strength, and impeccable sealing capabilities, making it an ideal choice for can lid manufacturing. Moreover, 3104/3004 aluminum alloys are employed as alternative materials, particularly when projects necessitate superior deep drawing characteristics and thinning stretchability to facilitate lightweight designs. The employment of these aluminum alloy variants is strategically aimed at fulfilling the stringent criteria of can lid materials, emphasizing processing efficiency, strength, and sealing integrity.

The 3004 aluminum alloy belongs to the Al-Mn series, boasting superior strength over the 3003 aluminum plate, coupled with excellent formability, solubility, and corrosion resistance. Its primary applications encompass components that necessitate a higher strength threshold than the 3003 alloy, encompassing chemical products, storage systems, thin plate fabrication elements, architectural baffles, cable trays, sewage piping, and diverse lighting fixtures.

Requirements for Easy-open can lid material
Can lids are usually made of metal, usually aluminum. The requirements for can lid materials mainly include the following points:

◆Food safety: Can lids must be made of materials that meet food safety standards to ensure that they will not affect the quality and safety of canned food.
◆Sealing: The lid must have good sealing performance to ensure that canned food will not be contaminated or oxidized during transportation and storage.
◆Corrosion resistance: Can lids need to be able to resist chemicals such as acids and alkalis in food, as well as moisture and oxides in the external environment, to maintain their appearance and performance stability.
◆Mechanical properties: Can lids need to have certain mechanical strength and toughness so that they are not easily deformed or damaged during closing and opening.
◆Recyclability: Considering the requirements of environmental protection and resource recycling, can lids should generally be recyclable materials and easy to recycle and reuse with the cans themselves.

Information of common allpys of Easy-open can lid material
3004 Aluminum Coil: A prevalent choice for crafting can lids, this alloy combines aluminum, manganese, and a trace of magnesium, offering remarkable moldability and corrosion resistance. Its superior mechanical characteristics and sealing capabilities make it an ideal material for can lid production.

3104 Aluminum Alloy: A versatile aluminum blend favored in the fabrication of can lids, 3104 boasts a tensile strength of 275MPA or above and an elongation capacity of up to 20%, enabling excellent deep drawing prowess. This alloy’s history extends to early can lid manufacturing, underscoring its reliability and suitability for the task.

The 5182 aluminum alloy serves as a prevalent material choice for can lids. Primarily formulated with aluminum, magnesium, and a minute proportion of chromium, it boasts remarkable strength coupled with exceptional corrosion resistance. Typically employed as the coating layer on can lids, the 5182 alloy further augments their durability against corrosive elements.