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Nitronic 50

XM-19/ S20910 / Nitronic 50

Nitronic 50 is a nitrogen-strengthened austenitic stainless steel, which provides a combination of corrosion resistance and strength not found in any other commercial materials in its price range. This alloy possesses corrosion resistance superior to 316, 316L, 317 and 317L plus approximately twice the yield strength at room temperature.

It has very good mechanical properties at both elevated and sub-zero temperatures. The alloy retains low magnetic permeability even after severe cold working or exposure to sub-zero temperatures and excellent mechanical properties up to 1200°F (649°C).

Nitronic 50 is used in such applications as seawater pumps, gate valves for seawater ballast systems on tankers, high-pressure (microbial) deep-sea sampler and incubation chambers and underwater robotic arms, urea production, ammonium carbamate pumps, pressure vessels, tanks, heat exchangers, piping, fittings, valves and pumps, oil field production and down-hole equipments. 

Nitronic 50 Chemical Composition:
Grade Ni% Cr% Fe% C% Mn% Si% N% Mo% Nb% V% P% S%
Nitronic 50 11.5-13.5 20.5-23.5 52-62 Max 0.06 4.0-6.0 Max 1.0 0.2-0.4 1.5-3.0 0.1-0.3 0.1-0.3 Max 0.04 Max 0.03

Nitronic 50 Physical Properties:
Grade Density Melting Point
Nitronic 50 7.8 g/cm3 1415 °C-1450 °C

Nitronic 50 Mechanical Properties:
Condition Tensile Strength Yield Strength σp0.2/MPa Elongation 
Solution Treated Min 690 Mpa Min 380 Mpa Min 35% Min 55%

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