The hot melting coefficient of aluminum is related to temperature. At low temperature (40k), it is directly proportional to the cubic temperature, and the range of 298k-900k conforms to the law C=a+b*T, tending to 25J/mol. C at high temperature. Please refer to the physical properties of inorganic materials for details.

Thermal conductivity of aluminum

Because aluminum is an inorganic substance, the thermal conductivity changes in a bell-shaped trend, the highest point is about 60 K, and when the temperature rises, it approaches a stable value. See Physical Properties of Inorganic Materials for details.

Metallic silicon, also known as crystalline silicon or industrial silicon, is mainly used as an additive for non-iron-based alloys. Metallic silicon is a product smelted with timely coke in an electric heating furnace. The main component silicon content is about 98% (in recent years, metallic silicon also contains 99.99% Si), and the rest impurities are iron, aluminum and calcium.

Silicon is widely used in smelting ferrosilicon alloy, as an alloying element in iron and steel industry and as a reducing agent in smelting many metals. Silicon is also a good component in aluminum alloys, and most cast aluminum alloys contain silicon. Silicon is the raw material of ultra-pure silicon in electronic industry. Electronic devices made of ultra-pure semiconductor monocrystalline silicon have the advantages of small volume, light weight, good reliability and long life. High-power transistors, rectifiers and solar cells made of silicon single crystal doped with specific trace impurities are better than those made of germanium single crystal.