UNS N08028(Alloy 28)

Short Introduction:

  • Alloy 28/UNS N08028/W. Nr. 1.4563 is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localise attack such as pitting and crevice corrosion. The alloy are especially resistant to sulphuric and phosphoric acid. Used for chemical processing, pollution control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production and pickling equipment.

    Category:

    Description

    Alloy 28 /UNS N08028

     Material grades and equivalents Alloy 28/UNS N08028/W. Nr. 1.4563

    Alloy 28 Chemical composition:

     

    C

    Si

    Mn

    P

    S

    Cr

    Ni

    Mo

    Cu

    Fe

    Min

    26.00

    30.00

    3.00

    0.06

    0.00

    Max

    0.03

    1.00

    2.50

    0.030

    0.030

    28.00

    34.00

    4.00

    1.40

    0.00

     

    Alloy 28 Physical properties:

    Material

    Tensile Strength MPa

    Yield Strength (0.2% Offset) MPa

    Elongation (%)

    Alloy 28

    650

    250

    40

     

    Specifications:

     Seamless tube and pipe

    ASTM B 668, EN 10216-5, SEW 400 (Feb 1991), SS 14 25 84,NFA 49-217

    Plate, sheet and strip

    ASTM B 709, EN 10088-2, SS 14 25 84

    Bar steel

    EN 10088-3, EN 10272, SS 14 25 84

     Fittings

    ASTM A 403 (chemical composition and mechanical properties according to ASTM B668)