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Alloy 600 • UNS N06600 • WNR 2.4816

Alloy 600 is a nickel-chromium alloy designed for use from cryogenic to elevated temperatures in the range of 2000°F (1093°C). The high nickel content of the alloy enables it to retain considerable resistance under reducing conditions and makes it resistant to corrosion by a number of organic and inorganic compounds. The nickel content gives it excellent resistance to chloride-ion stress-corrosion cracking and also provides excellent resistance to alkaline solutions.

Its chromium content gives the alloy resistance to sulphur compounds and various oxidizing environments. The chromium content of the alloy makes it superior to commercially pure nickel under oxidizing conditions. In strong oxidizing solutions like hot, concentrated nitric acid, 600 has poor resistance. Alloy 600 is relatively un-attacked by the majority of neutral and alkaline salt solutions and is used in some caustic environments. The alloy resists steam and mixtures of steam, air and carbon dioxide.

Available tube product forms

  • Straight
  • Seamless

Typical Applications

  • Heat exchangers
  • Thermocouples
  • Control and instrumentation tubes

Typical manufacturing specifications

  • ASTM B163
  • ASTM B167
  • AMS 5580
  • BS 3074
  • Also individual customer specifications.

Industries predominantly using this grade

  • Chemical processing
  • Nuclear and power

Technical Data

Mechanical Properties

Temper Annealed
Tensile Rm 110 ksi (min)
Tensile Rm 738 MPa (min)
R.p. 0.2% Yield 37 ksi (min)
R.p. 0.2% Yield 255 MPa (min)
Elongation (2” or 4D gl) 45 % (min)

Physical Properties (Room Temperature)

Specific Heat (0-100°C) 460°K-1
Thermal Conductivity 14.8 W.m -1.°K-1
Thermal Expansion 12.4 μm/μm/°C
Modulus Elasticity 207 GPa
Electrical Resistivity 10.3 μohm/cm
Density 8.42 g/cm3

Chemical Composition (% by weight)

Element Min Max
C - 0.15
Si - 0.5
Mn - 1
S - 0.015
Cr 14 17
Cu - 0.5
Fe 6 10
Ni 72 -