Chevrolet Corvette Exhaust Materials: Steel and Titanium

Chevrolet Corvette owners ask: What are the best materials for exhaust systems? Here are some answers.


Exhaust gases coming from your Chevy Vette engine cause air pollution.
The gases combined with water from engine combustion and water from the
air surrounding the system also develop into corrosives. In addition,
salts used for road safety in cold climates and atmospheric salt in
coastal areas cause corrosion.  Corrosives cause damage to metal
exhaust components and to building materials in urban areas. 
Manufacturers must take these factors into consideration when choosing
materials for manufacturing exhaust systems.

The exhaust components down-stream from the muffler (the exhaust and
tail pipes, and fittings) on most vehicles are made from low-carbon
ferritic stainless steel with between 11% and 12% chromium. The
up-stream components like exhaust manifold, where temperatures often
reach more than 500 degrees C (more than 900 degrees F) must have
high-temperature strength. High-chromium stainless steel is the
material most often used for these components. Aluminized steel is also
an option for those who live in dry, mild climates.

When choosing an exhaust system, it is advisable to take into consideration the following:

•    Do you often use the vehicle for hauling?
•    What is the primary use for your vehicle? Pleasure driving, off-road, work-related?
•    Do you live in a harsh environment, such as near the ocean, a lot of rain or snow, or severe winters?
•    How long do you intend to own your vehicle?

Answering all of these questions will help you decide on the type of exhaust system is best for your Corvette, including cost.

The titanium exhaust system on the Corvette type Z06 replaces the
previously standard stainless stain exhaust. It is light-weight,
corrosion and heat resistant, and environmentally friendly to construct
and recycle.