TDG Mafia - Booze Runner
Join Date: Jul 2005
Location: Bend, OR
Thanked 135 Times in 111 Posts
T-304 is the highest grade of stainless steel that is used in most aftermarket exhaust systems. It is non-ferrous, which means it does not contain iron. As we all know iron rusts. Instead, T-304 has a higher concentration of chromium and nickel. T-304 is basically impervious to corrosion. A good way to test the grade of a stainless steel is to place a magnet up against it. If it doesn’t stick to the metal, it is non-ferrous. If it sticks it has some degree of iron in it and is prone to rusting. T-304 is harder than T-409 and consequently is more difficult to form on the mandrel bending machines. T-304 is the specified grade of stainless steel for most food service, pharmaceutical, hospital, and medical facilities, as well as the grade of choice for most race car exhaust systems. T-409 does have some degree of iron in it. It is a better grade of stainless steel than the stainless steel used in most OEM exhaust systems (if equipped), but it will turn brown/gray and is prone to getting rust spots over time. This is especially true if placed in service in Northern climates where salt is used on the roads during the Winter months.
T-304 is the way to go!
2007 Dodge 3500 MegaCab Laramie CTD 4x4 Patroit Blue
Just a bunch of Go fast parts and programing