Exhaust Systems

Increasingly restrictive regulations in terms of emissions (CO2) have prompted car manufacturers to revise the standards of production of exhaust systems and opt for the use of more valuable steels, i.e. stainless steels.

The exhaust is a more complex system than you might think and is often mistakenly associated with the simple concept of a silencer: in reality even very sophisticated components such as the lambda sensor are part of the exhaust system.

For the construction of the various components that constitute an exhaust system, both standard ferritic steels and ferritic steels with a particular analytical balancing with increased corrosion resistance and the solderability are used, as well as the most common austenitic steels, as versions of the latter with improved machinability are commonly used as high micro cleanliness is not required for such applications.

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Valbruna Grade Steel type W.N. AISI UNS EN BS
MVAISL Austenitic Stainless Steel 1.4301/1.4307 304/304L S30400/S30403 X5CrNi18-10/X2CrNi18-9 304S15/304S31
VPAU188Z Austenitic Stainless Steel 1.4305 303 S30300 X8CrNiS18-9 303S31
X17L Ferritic Stainless Steel 1.4016 430 S43000 - 430S11 / 430S18
X17NBL Ferritic Stainless Steel 1.4511 - - X3CrNb17 -
X17Z/DE Ferritic Stainless Steel 1.4104 - - X14CrMoS17 -
X7AL Ferritic Stainless Steel 1.4713 - - X10CrAlSi7 -