Project Description

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

TrademarksGBJISKSASTMUNSDINW.NrGOSTBSNF
Nitronic 50
XM-19		–––XM-19S20910N-501.3964–X2CrNiMnMoNNb21-16-5-3–

Product Forms

Wire, Bar, Strip, Sheet, Plate, Tube, Pipe, Pipe Fittings, Forgings

Chemical Composition,%

CPSMnSiCrNiNbCuNVFe
≤0.06≤0.03≤0.034.00~6.00≤1.0020.50~23.5011.50~13.500.10~0.30≤0.250.20~0.400.10~0.30Bal

Typical Physical & Mechanical Properties (RT, Solution Annealed)

Density, g/cm3Melting Point, ℃Tensile Strength, MPaYield Strength, MPaElongation,%
7.801400-1430≥690≥380≥35

Specifications

Rod, Bar, Wire, ForgingsASTM A193/A194, ASTM A276, ASTM A479, AMS 5764
Plate, Sheet, StripASTM A240, AMS 5861
OthersASTM A182, ASTM A193/A194, ASTM A276, ASTM A479, AMS 5764
Welding ProductsA5.9 ER209

Features

  • High strength austenitic alloy
  • Good corrosion resistance
  • Low magnetic permeability

Applications

  • Seawater pump shafts
  • Heat exchangers
  • Pressure vessels
  • Marine hardware