The advantages of using stainless steel are obvious in pump manufacturing. Stainless steel is strong, corrosion resistant, has great hot strength, and is low maintenance. This makes it the perfect material for both surface and submersible pumps.
Stainless steel, made up principally of iron and carbon, is a steel alloy containing many elements. Chromium is added to make it resistant to rust, and invaluable for pump manufacturing.
We utilize several grades of stainless steel in our wide variety of pumps. We consider each component during pump design and fit it with the correct type of stainless steel.
304 grade stainless steel is used in the majority of our surface and submersible pumps. It has 18-20% chromium content and 8 to 10.5% nickel content providing impressive strength and excellent corrosion resistance. It is an obvious choice for our WS Series and WT Series submersible water well pump components.
316 SS shares many of the same characteristics as 304 SS, but includes molybdenum which provides stronger corrosion resistance. We use it in select shafts, wear rings, casings, pump bases, and pump housings. It is also used in our submersible V Series impellers.
410 SS is a 12% chromium martensitic stainless steel. It is excellent for high stress parts which need strength and corrosion resistance like the shafts in our submersible effluent and sewage pumps, and seal plates in our waste water pumps.
440 SS is a high grade of steel and typically contains up to 1.2% carbon. When properly heat-treated it is one of the hardest stainless steels and allows for better edge retention. It is used in the demanding motion of the cutters and cutter rings in our grinder pumps.
431 SS is a martensitic stainless steel. It has superior corrosion resistance to 410 SS and 440 SS. It has excellent corrosion resistance for a 400 series stainless steel. We use this in applications requiring high yield strength such as shafts in some of our NV Series vertical booster pumps.