Nitronic 40

Nitronic 40 Steel Supplier & Features


Nitronic 40 is a versatile stainless steel that has a high manganese content. This alloy has high strength and excellent corrosion resistance that can be used at high temperatures. Yield strength is twice that of Grades 304, 321 and 347. While Nitronic 40 can survive high temperatures, one if its characteristics is its ability to survive in cool, cryogenic temperatures. This makes Nitronic 40 a suitable steel for surviving in marine environments with cooler temperatures.

Nitronic 40 Industries & Applications

Since Nitronic 40 has a high corrosion resistance, machinability and weldability, this makes it a versatile steel that can be used in a variety of industries and applications but is most commonly used in the aerospace industry. Other industries and applications include:

  • Aerospace and airplane technology
  • Manufacturing
  • Medical & hospital industries
  • Natural gas facilities
  • Clamps
  • Flanges
  • Hydraulic tubing
  • Chemical processing
  • Pollution control equipment
  • Cryogenic applications
  • Steam and autoclave parts

Features of Nitronic 40

Corrosion Resistance – Nitronic 40 has a high corrosion resistance. Specifically, in chemical applications, it is similar to that of Type 304 stainless steel. It has shown excellent cracking resistance in tests for 15 years at ambient temperatures in severe seacoast atmospheres. This makes Nitronic 40 an excellent candidate for withstanding everyday wear and tear. Nitronic 40 is an excellent choice for multiple high heat, heavy duty applications.

Machine/Weldable – Nitronic 40 work hardens during machining. This requires rigid tooling, heavy feeds, and slower speeds. It is also readily weldable using TIG, MIG and shielded metal arc welding methods. Like other Nitronic grades, the high nitrogen content can interfere with electron beam welding by severe outgassing.

Workable – Nitronic 40 can be used in various temperatures. Annealing is used to give best stress rupture life and for operating temperatures between 1300/1600 degrees. Heating for hot working should be in the temperature range of 2100˚F to 2200˚F.

Fabricate – The In-process annealing may be done between 1950˚F to 2050˚F.

Nitronic 40
NItronic 40

Stainless Shapes

No matter what stainless grade you are looking for, remember that we are here for you every step of the way. If you are unsure of what you are looking for or would like to know more about the grades and services we provide, give us a call. We have sales centers in Florida and Illinois ready to take your call and help you with your problems. You can reach us at (800) 748-9811

Nitronic® is a registered trademark of AK Steel.