Aluminium sheet plate has low density, high strength, good plasticity, can be widely used in life, military, technology and other aspects. Aluminum alloy has large grade categories, specifications are countless, how to buy suitable aluminum sheet plate? it is necessary to proceed from the needs of our own products, select the properties suitable for own products, and achieve reasonable material selection, and reasonably control the cost under the premise of ensuring performance. From hardness, strength, corrosion resistance and other considerations.

1.The hardness:
Many customers are very concerned about the hardness when buying aluminium sheet plate. The hardness has a direct relationship with the chemical composition of the aluminum alloy first. In fact, different tempers also have a greater impact. From the highest hardness that can be achieved: 7000 series, 2000 series, 6000 series, 5000 series, 3000 series, 1000 series decreased in turn.
2.The strength
Strength is an important factor that must be taken into consideration when designing a product. Especially when aluminum sheet plate is used as a structural part, an appropriate alloy should be selected according to the pressure it is subjected to. Pure aluminum alloy has the lowest strength, while 2000 and 7000 series heat-treated alloys have the highest strength. Hardness and strength have a certain positive relationship.
3.The corrosion resistance
Corrosion resistance includes chemical resistance, electro-chemical and stress corrosion resistance. In general, the corrosion resistance of 1000 series pure aluminum alloy is the best, the 5000 series performs well, followed by the 3000 series and the 6000 series, and the 2000 series and the 7000 series aluminum alloys are poor. Corrosion resistance selection principles should be based on the use of the occasion. High-strength alloys used in corrosive environments must use a variety of corrosion-resistant composite materials.