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Nitronic 40/50/60 UNS UNS21900 / UNS 20910 / UNS S21800

Arctic Steel supplies Nitronic steel in tube form, available in grades 40, 50, and 60.

Known for their excellent combination of strength, corrosion resistance, and durability, the Nitronic series offers dependable performance across demanding environments. Nitronic 40 delivers high yield strength and outstanding cryogenic properties, while Nitronic 50 provides superior corrosion resistance and nearly double the yield strength of type 304 stainless steel, with excellent resistance to seawater. Nitronic 60 stands out for its exceptional galling resistance, the best among stainless steels, along with strong pitting and corrosion resistance. Together, these grades provide a versatile and reliable solution where toughness and longevity are essential.

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Dimensions

Annealed - 5-320mm / High Strength 12mm - 210mm / Super High Strength 60mm - 160mm

Application

The Nitronic range, including grades 40, 50, and 60, is widely used in applications where strength, corrosion resistance, and wear performance are crucial. These steels maintain their mechanical properties across a wide temperature range, making them ideal for both cryogenic and high-stress environments. Typical components include valves, fittings, fasteners, pumps, flanges, chains, and other critical parts exposed to marine, industrial, or cryogenic conditions.

Typical industries using Nitronic 40, 50, and 60:

  • Marine and offshore
  • Oil & gas
  • Aerospace and defence
  • Industrial machinery and manufacturing

Mechanical properties

Yield Strenght, Mpa (KSI)
Tensile Strength, Mpa (KSI)
Elongation (%)
Hardness (HRC)
Impact average value (J)

Chemical composition

C
Si
Mn
P
S
Cr
Mo
NI
Cu
V
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