Engine exhaust manifold

In terms of the advantages of Ni-Resist cast iron, many types of engine exhaust manifolds are made of Ni-Resist. For exhaust parts manifolds and valve guides, Ni-Resist castings have proved resistant to the effects of temperatures up to 1050 centigrade and the severe wear that can be caused by valve stem motion. They are also resistant to attack by most usual combustion products. Thermal expansion coefficients of Ni-Resist alloy which closely match those of stainless steels and UNS N06600 are another factor in exhaust applications. 

 

Water pump impellers and bodies offer another appropriate use for Ni-Resist alloys in engines. With increase in power, modern water pumps must operate at higher velocities than in the past. Higher water temperatures and pressures many increase the corrosion hazard and higher speeds can cause increased erosion damage. 

 

Some of the more frequent applications are:

Cylinders liners

Diesel engine exhaust manifolds

Exhaust valve guides

Gas turbine housings, stators and other parts

Insert rings and hot spot buttons for aluminum alloy pistons

Turbocharger housing, nozzle rings, heat shields and other parts

Water pump bodies and impellers