Alloy 22-13-5 • UNS S20910 • WNR 1.3964

S20910 stainless steel provides a combination of good corrosion resistance and strength not found in any other commercial material available in its price range. This austenitic stainless steel has corrosion resistance greater than that provided by types 316 and 316L, plus approximately twice the yield strength at room temperature in the annealed condition.

In addition S20910 stainless steel has very good mechanical properties at both elevated and sub-zero temperatures a well as outstanding cryogenic properties. And, unlike many austenitic stainless steels, 22-13-5 stainless steel can be heavily cold worked to enhance its yield strength and remain non-magnetic.

Available tube product forms

Typical Applications

  • Medical implants
  • Pressure tube
  • Downhole

Typical manufacturing specifications

  • ASTM F1314
  • Also individual customer specifications.

Industries predominantly using this grade            

Technical Data

Mechanical Properties

* or manufactured to customer specification

Temper Annealed Cold-worked*
Tensile Rm 105 ksi (min) 125 ksi (min)
Tensile Rm 725 MPa (min) 862 MPa (min)
R.p. 0.2% Yield 60 ksi (min) 100 ksi (min)
R.p. 0.2% Yield 415 MPa (min) 690 MPa (min)
Elongation (2” or 4D gl) 35 % (min) 20 % (min)


Physical Properties (Room Temperature)

Specific Heat (0-100°C) 475 J.kg-1.°K-1
Thermal Conductivity 13.3 W.m -1.°K-1
Thermal Expansion 16.2 mm/m/°C
Modulus Elasticity 10.8 GPa
Electrical Resistivity 82 μohm/cm
Density 7.88 g/cm3


Chemical Composition (% by weight)

Element Min Max
C - 0.03
Mn 4 6
Ni 11.5 13.5
Cr 20.5 23.5
Fe Balance
Mo 2 3
N 0.2 0.4
Si - 0.75
P - 0.025
S - 0.01
Nb 0.1 0.3
V 0.1 0.3
Cu - 0.05
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