The main element of aluminum-magnesium alloy is aluminum, and then a small amount of magnesium or other metal material is added to enhance its hardness. Because it is metal itself, its thermal conductivity and strength are particularly prominent. Aluminum-magnesium alloys are light in weight, low in density, good in heat dissipation, and strong in pressure resistance, and can fully meet the requirements for highly integrated, light and thin, miniaturized, anti-fall and electromagnetic shielding and heat dissipation of 3C products . Its hardness is several times that of a traditional plastic case, but its weight is only one-third of that of the latter, and it is usually used for the casing of mid-to-high-end ultra-thin or smaller-sized notebooks . Moreover, the silver-white magnesium aluminum alloy shell can make the product more luxurious, beautiful, and easy to color, can be turned into a personalized powder blue and pink through the surface treatment process, add a lot to the laptop computer , which is engineering plastics And carbon fiber can not match. Thus became portable aluminum-magnesium alloy notebook computer shell material of choice, at present most manufacturers of laptop products are used aluminum-magnesium alloy shell technology. Disadvantages: Magnesium alloy is not very strong and wearable, the cost is high, it is expensive, and the forming ratio is more difficult than ABS ( need to use stamping or die casting process ) , so the laptop usually only uses aluminum-magnesium alloy on the top cover, rarely Organic models use aluminum-magnesium alloys to make the entire chassis.
Titanium-magnesium alloys having high strength and small density, good mechanical properties, good toughness and corrosion resistance further: process performance is poor titanium alloy, hot working difficulties in cutting, it is very easy to absorb impurities such as carbon hydrogen nitrogen. also the difference abrasion resistance, the production process is complicated and its main parts as titanium, but also a lot of the content of magnesium.