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    Nickel Alloy 625

    Product Information for Nickel Alloy 625 tubing and pipe

      Sizes   Standard Tolerances
    Products OD Wall Lengths and/or coils Grades OD Wall Lengths
    Pressure & Corrosion Tubing

    Meets or exceeds requirements for welded

    Specifications: ASTM-B704, ASME-SB704, ASTM-B705, ASME-SB705

    1/16" (1.59 mm) to 4" (101.6 mm)

    Metric sizes available

    0.010" (0.25 mm) to 0.220" (5.59 mm) Random or cut lengths up to 40' (12.9 m)

    Coils to 1-1/2" OD

    625
    <5/8" (15.9 mm) ±0.005" (0.127 mm)
    5/8" to 1-1/2" ±0.007"
    >1-1/2" (38.1 mm) to 3" (76.2 mm) ±0.010" (0.25 mm)
    >3" (76.2 mm) to 4" (101.6 mm) ±0.015" (0.38 mm)
    ±15% ±12.5% Randoms up to +2" (50.8 mm)

    Cuts +1/8" (3 mm) -0"

    Coils to 80,000' (24,384 m)

    Physical Properties of Nickel Alloy 625 in the Annealed Condition at -20°F to +100°F

          Tensile Strength Yield Strength            
    Alloy UNS Desig-nation Spec. psi MPa ksi psi MPa ksi Elongation in 2 in. (min.) % Grain Size Req. Max. Hard-ness Modulus of Elasticity (x106psi) Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) Thermal Conductivity (BTU-in/ ft2-h-°F)
    625, GR 1 (Annealed) N06625 B704,
    B705
    120,000 827 120 60,000 414 60 30 30.0 7.1 68
    625, GR 2 (Solution Annealed) N06625 B704,
    B705
    100,000 690 100 40,000 276 40 30 30.0 7.1 68

    Composition of Nickel Alloy 625 tubing and pipe

    Grade 625
    UNS Designation N06625
    Nickel (Ni) 58.0 Min. (Plus Cobalt)
    Chromium (Cr) 20.0–23.0
    Iron (Fe) 5.0 Max.
    Molybdenum (Mo) 8.0–10.0
    Titanium (Ti) Max. 0.40
    Aluminum (Al) Max. 0.40
    Cobalt (Co) Max. 1.0
    Tungsten (W)
    Vanadium (V) Max.
    Copper (Cu) Max. 0.75
    Manganese (Mn) Max. 0.50
    Niobium (Nb) plus Tantalum 3.15–4.15
    Carbon (C) Max. 0.10
    Nitrogen (N) Max.
    Silicon (Si) Max. 0.5
    Sulphur (S) Max. 0.015
    Phosphorous (P) Max. 0.015
    Other Elements

    Nickel Alloy 625 Product Range

    Alloy UNS Designation Werkstoff NR. Specifications*
    625 N06625 2.4856 B/SB704, B/SB705

    *Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.

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