Publish Time: 2023-04-10 Origin: Site
① Aluminum alloy
1. The density of aluminum alloy varies according to the alloy elements added during aluminum alloy forging, generally between 2.5g/cm3 to 2.88g/cm3.
2. The density of pure aluminum is small (ρ=2.7g/cm3), about 1/3 of iron, and its melting point is low (660°C).
3. Aluminum has high plasticity (δ: 32~40%, ψ: 70~90%).
4. It is easy to process, can be made into various profiles and plates, and has good corrosion resistance; but the strength of pure aluminum is very low.
5. Aluminum alloy profiles are the most widely used non-ferrous metal structural materials in the industry. The quality of the material depends on the density of the material; (it also has a great impact on die-casting and surface treatment).
② Zinc alloy
The density of zinc-aluminum alloy is 6.3g/cm3,Cast zinc-aluminum alloy is 6.75g/cm3.
1. Density is higher than aluminum alloy
2. Good casting performance, can die-cast precision parts with complex shapes and thin walls, and the surface of the castings is smooth.
3. Surface treatment is available: electroplating, spraying, painting, polishing, grinding, etc.
4. It does not absorb iron during melting and die casting, does not corrode the pressing type, and does not stick to the mold.
5. It has good mechanical properties and wear resistance at room temperature.
6. Low melting point, melting at 385°C, easy to die-cast.
③ Stainless steel
Stainless steel is the abbreviation of stainless acid-resistant steel. The steel grades that are resistant to weak corrosive media such as air, steam, and water, or have stainless properties are called stainless steel; Corrosion) steel is called acid-resistant steel. Jiahangaero said that due to the difference in chemical composition between the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel is generally stainless.
It has good formability and good weldability, and can be used as an ultra-high-strength material in the nuclear industry, aviation and aerospace industries. According to the composition, it can be divided into Cr series (400 series), Cr-Ni series (300 series), Cr-Mn-Ni (200 series), heat-resistant chromium alloy steel (500 series) and precipitation hardening system (600 series). Material: SUS201, 202, 302, 304, 316, 304L, 316L, 321 stainless steel wire, etc.