Food grade steel, housings, bodies
304 is widely accepted in the food industry as the standard for cleanliness as well as corrosion resistance.
Housings, gears, plates
316 is known for its superior corrosion resistance, making it ideal for many uses including marine environments.
Housings, bushings, handles, brackets
400 series steels are high strength and very machinable. They will tend to break rather than bend under intense pressure.