The heat sinks of LED lights are generally made of aluminum, which can be divided into two categories: stretched aluminum mainly made of aluminum such as AL6060, and die-cast aluminum mainly made of ADC12.

Among them, the thermal conductivity of ADC12 is 96.7w/m℃, while the one of AL6060 and other aluminum materials is 198-250w/m℃. Obviously the latter is better than the former in terms of thermal conductivity.

Though ADC12 die-casting aluminum can satisfy the general requirements of design aesthetics, but the design of the mould can cost a lot.

The cost of tensile aluminum is generally one tenth of the die-casting mold, and its length is also very flexible, but it can not completely occupy the shell of aluminum heat sink factory. Due to the following points: hardness, deformation, appearance can only be tensile type, changeless, can not meet the market appearance demand.