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Carlson Alloy Nitronic 30® Austenitic Stainless Steel


Subcategory: Stainless Steel; Alloy Steel; Metal; Austenitic

Key Words: UNS S20400

Material Notes:
General Description

Nitronic 30 is a nitrogen-strengthened austenitic stainless steel developed for applications requiring good aqueous corrosion resistance combined with good resistance to abrasive and metal-to-metal wear. Nitronic 30 has annealed mechanical properties which are well above those of typical austenitic grades such as 304. This higher strength affords the opportunity to reduce thickness at equivalent engineering loads.

Galling resistance of Nitronic 30 is approximately equal to 304. It work hardens rapidly while retaining good ductility. Unlike other nitrogen-strengthened stainless steels, Nitronic 30 is subject to magnetic transformation when cold worked.

Nitronic 30 exhibits outstanding corrosive wear resistance under many different sliding conditions. It is more cost effective than 409 and 304 which are typically used in wet abrasive applications.

The alloy possesses good corrosion resistance in many different environments. Pitting resistance is better than 304. In sulfuric and hydrochloric acids, Nitronic 30 is superior to 409 and 410, and approaches 304 in dilute solutions.

Nitronic 30 is markedly more resistant to stress corrosion cracking in hit chloride solutions at lower stress levels than 304 and 304L. At higher levels the chloride stress corrosion cracking resistance approximates 304 and 304L.


  • Coal handling equipment – screens, chute liners, buckets and hopper cars
  • Water supply and control structures
  • Sewage treatment plant structures
  • Mining equipment – magnetic ore separator screens
  • Bulk solids handling equipment – conveyor parts
  • Mixing tanks
  • Wear plates now using less cost effective materials such as abrasion resistance steels, 409 or 304 stainless steels.
  • Transport and vibratory equipment where fatigue resistance is a major design criteria.
  • Shipboard containers

Information provided by Carlson

Available Properties
  • Density
  • Hardness, Brinell
  • Hardness, Rockwell B
  • Tensile Strength @ Break
  • Tensile Strength @ Yield
  • Elongation at Yield
  • Modulus of Elasticity
  • Magnetic Permeability
Property Data

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