Alloy 601 is a nickel-chromium alloy that offers outstanding oxidation resistance up to 1204°C

Alloy 601 alloy develops a tightly adherent oxide scale which resists spalling even under severe thermal cycling. This alloy has good high temperature strength and retains its ductility after long service exposure, with good corrosion resistance under oxidising conditions.

  • UNS Number: N06601
  • Werkstoff Number: 2.4851
  • ASTM: B163, B166, B167, B168, B564, 5870, B751, B775, B829
  • AMS: 5715

Product availability


Chemical analysis



  • Copper brazing, annealing and sintering
  • Muffles and retorts
  • Radiant tubes
  • Strand annealing tubes
  • Steam superheater tube supports
  • Rotary kilns and calciners
  • Thermocouple protection tubes
  • Neclear waste transport tank lining
  • Vitrification of nuclear waste

About Alloy 601

Alloy 601 should be welded with a matching composition filler wire. In addition, the weld products developed for RA 602 CA® can provide a stronger weld with higher oxidation resistant than alloy 601.

To learn more about alloy 601 contact us, or fill in our online quote form and we’ll get back to you.

    Mechanical & Physical Properties

    Mechanical & Physical Properties21°C538°C649°C760°C871°C982°C1093°C
    Ultimate Tensile Strength /kMPa689.5620.5413.7234.4124.1--
    0.2% Yield Strength /MPa372.3331282.7179.2103.4--
    Minimum Creep 0.0001% per hr,MPa---28.313.85.23
    10,000 hr Rupture Strength, MPa---42.717.98.34.3
    Coefficient of Thermal Expansion µm/m⁰C15.31616.617.117.618.3
    Thermal Conductivity /kcal/(hr.m.°C)9.717.318.920.42223.525.1
    Modulus of Elasticity/ 105 MPa2.061.751.661.551.421.271.12
    Proud members of the British Valve & Actuator AssociationProud members of the British Valve & Actuator Association