Titanium - the newest helper in the automotive field

Due to its high strength, light weight, corrosion resistance, high-temperature resistance and other excellent properties, titanium is gradually becoming more widely used in the automotive industry thanks to advances in titanium production technology and cost control. Its comprehensive performance advantages make it one of the key materials for the future of automotive lightweight design. It is mainly used in the following areas:

I. Engine systems.Using titanium for key engine components can improve performance and reduce weight, particularly for high-performance models and racing cars. The following components are mainly affected:
✎Valves and valve springs.
Titanium valves are around 40 per cent lighter than traditional steel valves. This reduces inertial forces, improves engine response and efficiency at high speeds and reduces valve spring loads, thereby extending component life. Some high-performance sports cars, such as the Porsche 911 GT3, already use titanium valves, for example.
✎Connecting rods.
Titanium connecting rods are lightweight yet strong, which reduces engine vibration and noise while improving fuel economy. Mazda, for example, has experimented with titanium connecting rods in rotor engine models.
✎Turbocharger components.
Titanium Alloys are used in turbine shafts and impellers to withstand high temperatures and pressures, reduce turbine hysteresis, and improve turbocharging efficiency.

II. Chassis and suspension. Using titanium in the chassis and suspension optimises vehicle handling and comfort.
✎Suspension springs.
Titanium springs are over 50 per cent lighter than steel springs and offer excellent fatigue resistance, reducing unsprung mass and improving suspension response and ride stability. Some high-end vehicles, such as the Tesla Model S Plaid, use titanium springs.
✎Chassis components.
Titanium alloys are used in components such as lower arms and steering knuckles to reduce weight and improve corrosion resistance. For example, some racing car chassis structural parts are welded with titanium alloys to improve overall rigidity.

III. Bodywork and structural components.Titanium applications in bodywork focus on reducing weight and improving safety.
✎Body frame and skeleton.
Titanium alloys combined with carbon fibre composites can be used for the body frame, A-pillar, B-pillar, and other key structural components, improving crash safety while reducing weight. Titanium alloys are currently used in concept cars (e.g. the Audi TT Quattro Concept had a titanium skeleton).
✎ Bolts and fasteners.
Lightweight, high-strength and corrosion-resistant, titanium alloy bolts are widely used to replace steel fasteners, especially in the chassis, engine compartment and other corrosion-prone areas.

IV. Exhaust system .Titanium is the ideal material for high performance exhaust systems.
✎ Exhaust pipes and silencers.
Titanium alloys are resistant to high exhaust temperatures (up to 800°C or more), lightweight (about 40% lighter than stainless steel), and have surfaces that resist corrosion without additional coatings. Examples include high-end sports cars such as the Ferrari 488 GTB and tuned exhaust brands such as Akrapovič, where it enhances the sound quality and reduces the overall weight of the car.

V. Other components.
✎ Wheels.
Titanium alloy wheels are strong and durable, and can be designed to create complex, lightweight shapes, which are mostly found on racing cars or customised, high-end models.
✎ Interior and decorative parts.
Through surface treatment (such as anodising), titanium alloy can exhibit a metallic lustre. It is used for interior trim, pedals and other decorative parts to enhance the sense of luxury, as seen in some luxury models.

As many parts of the car are made of titanium, the grade of titanium used for each part will depend on its function and the environment in which it is used. So, how do you choose the right grade? The key factors for selecting titanium grades are as follows:
✎ Mechanical properties:
Low-load parts use pure titanium (GR1/GR2) and high-load parts use α + β or β-type alloys (GR5/Grade 29、Ti-1023(Ti-10V-2Fe-3Al)).
✎ Operating temperature:
For high-temperature environments (e.g. exhaust systems), select an α-type alloy (Ti-5Al-2.5Sn) or an α+β-type alloy (Ti-6Al-2Sn-4Zr-2Mo（Ti-6242)/TC11).
✎ Corrosive environments:
In coastal areas or environments with high humidity, use pure titanium or alloy titanium GR5, which has superior corrosion resistance to steel.
✎ Cost control:
High-end models can opt for β-type alloys; production models prefer the lower-cost GR5 or Grade.Application Parts Titanium Grade Recommended  Shape / Process Core Performance Needs

By matching grades and shapes reasonably, titanium can play a key role in automotive lightweighting, enhancing performance and optimising durability. Its application scope will expand further in the future as processes advance. However, there are still many challenges and trends in the application of titanium.
1.High cost: Titanium alloy raw materials and processing costs are 5–10 times higher than steel, so it is mainly used in high-end or performance models.
2.Difficult processing: Titanium alloys have a high melting point and strong adhesion, and require specialised equipment and processes (e.g. laser welding and 3D printing).
Future direction:
1.As 3D printing technology matures (e.g. selective laser melting, SLM), the production cost of complex titanium alloy structural parts is expected to decrease.
2.Due to the trend of electrification and the urgent need for lightweighting in the automotive industry, titanium may expand its application to parts such as battery brackets and motor casings.

ProX Metal is a titanium producer offering a wide range of products, including titanium rods, wires, plates, sheets, billets, round bars, strips, tubes, pipes and machining products.

We have been deeply engaged in the industry for more than 20 years and have ISO9001 product certification. We are a stable and reliable company and look forward to communicating with you if you have any titanium material needs.