Monel 500® - K500

The following data is provided for informational purposes only. It was provided with permission by Special Metals at www.specialmetals.com 

Monel 500®, or K500 ( also known as UNS 05500), is used known for having high strength and resistance to most corrosive elements.

Chemical Composition
(%max., unless shown as range or min.)

Ni + Co Cu Al Fe Mg Si Ti C S
Min./Max. 63 27.0-33.0 2.30-3.15 2.0 1.5 0.5 035 – 085 0.25 0.01

Applicable Specifications

Product Specification
Bar ASTM B 865, BS3076NA 18, DIN 17752, DIN17754, QQ-N-286,

SAE AMS 4676, ASME Code Case 1192, ISO 9723, ISO 9725

Plate BS3072NA18,QQ–286, DIN 17750, ISO 6208
Rod, Welding BS3076NA 18, ASTM B 865, DIN 17752, DIN 17754,

QQ-N-286, SAE AMS 4676, ASME Code Case 1192, IS0 9725

Sheet BS3072NA 18, QQ-N-286, DIN 17750, ISO 6208
Strip BS3073NA 18, QQ-N-286, DIN 17750, ISO 6208

Common Fabrication Processes
K500 is generally softer then many steel alloys, and can be forged into nearly any shape. This includes:

  • Pumps and Shafts
  • Valves
  • Rings and Discs
  • Fasteners and springs
  • Tanks (gasoline and freshwater)
  • Paper production – doctor blades and scrapers
  • Oil well drill collars and instruments
  • Safety lifts – oil & gas
  • Electronic components, including sensors
  • Boiler heaters

Industries that Commonly use K500 Forgings:

  • Aerospace and Aviation
  • Industrial heat exchangers
  • Boiler feed water heaters
  • Power Generation
  • Marine engineering
  • Chemical & hydrocarbon processing