Advantages of titanium screws
Titanium screws offer numerous advantages over screws made of stainless steel or other materials:
- Lightweight : Titanium is approximately 45% lighter than steel, which significantly reduces the weight of assemblies. This property is particularly valued in the aerospace and automotive industries.
- Corrosion resistance : Titanium is naturally resistant to corrosion from water, salts, acids, and alkalis. Titanium screws therefore maintain their integrity in aggressive environments.
- High mechanical resistance : Despite their lightness, grade 5 titanium screws (Ti-6Al-4V alloy) have a tensile strength equivalent to that of high strength class 8.8 steel screws. They therefore support high loads.
- Biocompatibility : Titanium is biocompatible and hypoallergenic, making it ideal for medical implants and jewelry.
- Non-magnetic : Titanium is not magnetic, which is an advantage in certain applications.
Disadvantages of titanium screws
Despite their many advantages, titanium screws have some drawbacks:
- High cost : Titanium is a rare metal and its extraction is expensive, which is reflected in the price of screws.
- Machining difficulties : Titanium is a reactive material that easily absorbs impurities during machining, which complicates its implementation.
- Weldability in retreat : Titanium alloys have poor weldability compared to other metals.
In summary, titanium screws are an excellent choice when lightness, corrosion resistance, and high mechanical strength are paramount, despite their higher cost. Their use is particularly recommended in demanding industries such as aerospace, automotive, and medical.
