Monel Welding Overview

Dynamic Fabrication specializes in Monel welding. Monel alloys are nickel-based that have high resistance to atmospheric corrosion, salt water, and various acid and alkaline solutions. Alloys of identical chemical and mechanical properties are available from other manufacturers and offer excellent alternatives to the various MonelĀ® brand alloys. Monel is a corrosion-resistant alloy that is widely used in the marine, oil and chemical processing industries. Here is an article about the characteristics and history of Monel.

monel welding

Characteristics of Monel Welding

  • Good resistance to acids such as hydrofluoric and sulfuric acid
  • Highly resistant to alkalis
  • Highly corrosion resistant
  • Malleable
  • Stronger than steel

Applications where Monel alloys are used

  • Pump shafts, oil-well tools, instruments, doctor blades and scrapers, springs, valve trim, fasteners, marine propeller shafts
  • Marine components
  • Chemical and hydrocarbon processing equipment
  • Valves, pumps, shafts, fittings, heat exchangers

Monel is primarily composed of nickel and copper with some iron and other trace elements. Compared to steel Monel is very difficult to machine as it work-hardens very quickly. It needs to be turned and worked at slow speeds and low feed rates. It is resistant to corrosion and acids, and some alloys can withstand a fire in pure oxygen. It is commonly used in applications with highly corrosive conditions.

Monel is resistant to sea water and steam at high temperatures as well as to salt and caustic solutions. It is excellent corrosion resistance in a wide variety of media. Monel welding is characterized by good general corrosion resistance providing moderate to high strength. Monel welding is particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated. The alloy is slightly magnetic at room temperature. The alloy is widely used in the chemical, oil and marine industries.

Small additions of aluminum and titanium form a Monel alloy (K-500) with the same corrosion resistance but with much greater strength due to gamma prime formation on aging. Monel is typically more expensive than stainless steel.

Dynamic Fabrication is your source for monel welding as well as other exotic metals. DFI is certified to weld all metals. We apply guarantee superior workmanship and quick turn-around. The registered trademark name, Monel, is applied as the prefix name to several corrosion resistant alloys produced by Special Metals Corporation.