Which is better, titanium alloy or stainless steel?
Comparing titanium metal with stainless steel, titanium metal is better.
The density of titanium and titanium alloys is only 4.51, which is smaller than steel and only half the weight of steel, but its strength is similar to ordinary carbon steel. Titanium is a thermodynamically unstable metal and is very active. Titanium metal can form a natural oxide film (titanium dioxide) with air. This stable, highly adhesive, and extremely protective oxide film determines the corrosion resistance of titanium. , so titanium has excellent corrosion resistance. Secondly, light texture, high tensile strength, and good mechanical properties are other excellent characteristics of titanium alloy.
Titanium has good corrosion resistance: a dense oxide film is easily formed on the surface of titanium alloys below 550°C, so it is not easy to be further oxidized. It has high corrosion resistance to the atmosphere, seawater, steam, and some acids, alkalis, and soft media. thing.
Titanium has good thermal strength: The melting point of titanium alloy is 1660°C, which is higher than iron. It has high thermal strength, can work below 550°C, and exhibits good toughness at low temperatures.
Titanium is difficult to process: welding, electroplating, and cold drawing are very difficult. Welding and electroplating must be performed in a vacuum or filled with inert gas (vacuum ion plating).
Titanium alloys are widely used in various fields due to their high strength, good corrosion resistance, and high heat resistance.
The density of titanium alloys is generally around 4.51g/cubic centimeter, which is only 60% of steel. The density of pure titanium is close to the density of ordinary steel. Some high-strength titanium alloys exceed the strength of many alloy structural steels. Therefore, the specific strength/density of titanium alloys is much greater than that of other metal structural materials, and parts with high unit strength, good rigidity, and lightweight can be produced. Sporting goods golf, aircraft engine components, frames, skins, fasteners, and landing gear all use titanium alloys.
304 is a versatile stainless steel that is widely used to make equipment and parts that require good comprehensive properties (corrosion resistance and formability). To maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 18% chromium and more than 8% nickel.
The density is 7.93g/cm3, and it is also called 18/8 stainless steel in the industry. It is resistant to high temperatures of 800 degrees and has the characteristics of good processing performance and high toughness. It is widely used in industry, furniture decoration industry, food and medical industry.
In Conclusion, titanium alloy is better in terms of strength, low density, and corrosion resistance. Everyone is welcome to add
