The Spencer Engineering Edge is apparent when it comes to dealing with extraordinary application conditions. Over our corporate lifetime of more than a century, Spencer engineers have faced innumerable challenges and built a database of effective approaches for them.

Special Materials and CoatingsSpencer’s standard material of construction for fabricated, multistage centrifugal blowers and gas boosters is carbon steel with aluminum impellers. Standard coatings are epoxy primer for all interior and exterior surfaces, and a urethane exterior topcoat. Scores of other metals and coatings are available for customized performance.

We have compiled lists of suitable materials of construction for blowers handling gaseous fumes of everything from acetic acid (Type 304 stainless steel) to sodium hydroxide (Hastelloy®), and moist chlorine (Inconel®) to nitric acid (316 SS).

One effective approach is to combine standard and custom materials. Specialized alloys can be used for components exposed to corrosive gases; less expensive materials for unwetted parts. The result is a blower that has special protection where it’s needed and economy everywhere else.

Materials of construction

  • Carbon steel
  • Cast iron
  • Aluminum
  • 300 Series stainless steel
  • 400 Series stainless steel
  • Carpenter 20® stainless steel
  • AR steel
  • FE 255®
  • Cor-Ten®
  • Monel 400
  • Hastelloy C22
  • Hastelloy C276
  • Inconel 625
  • AL6XN
  • Titanium
  • Brass/bronze