Nitronic 50 (UNS S20910)
Nitronic 50 (XM-19, UNS S20910), or N-50 is a high strength and good corrosion resistant austenitic stainless steel. It has nearly double the yield strength of 304 and 316 stainless steel and has better corrosion resistance than 317L stainless steel. N50 Stainless remains non-magnetic even after being severely cold worked. It maintains strength at high temperatures as well as sub-zero temperatures.
Equivalent Grades
Trademarks | GB | JIS | KS | ASTM | UNS | DIN | W.Nr | GOST | BS | NF |
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Nitronic 50 XM-19 | – | – | – | XM-19 | S20910 | N-50 | 1.3964 | – | X2CrNiMnMoNNb21-16-5-3 | – |
Product Forms
Wire, Bar, Strip, Sheet, Plate, Tube, Pipe, Pipe Fittings, Forgings
Chemical Composition,%
C | P | S | Mn | Si | Cr | Ni | Nb | Cu | N | V | Fe |
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≤0.06 | ≤0.03 | ≤0.03 | 4.00~6.00 | ≤1.00 | 20.50~23.50 | 11.50~13.50 | 0.10~0.30 | ≤0.25 | 0.20~0.40 | 0.10~0.30 | Bal |
Typical Physical & Mechanical Properties (RT, Solution Annealed)
Density, g/cm3 | Melting Point, ℃ | Tensile Strength, MPa | Yield Strength, MPa | Elongation,% |
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7.80 | 1400-1430 | ≥690 | ≥380 | ≥35 |
Specifications
Rod, Bar, Wire, Forgings | ASTM A193/A194, ASTM A276, ASTM A479, AMS 5764 |
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Plate, Sheet, Strip | ASTM A240, AMS 5861 |
Others | ASTM A182, ASTM A193/A194, ASTM A276, ASTM A479, AMS 5764 |
Welding Products | A5.9 ER209 |
Features
- High strength austenitic alloy
- Good corrosion resistance
- Low magnetic permeability
Applications
- Seawater pump shafts
- Heat exchangers
- Pressure vessels
- Marine hardware