UNS N06455 (Hastelloy C-4)

Short Introduction:

Hastelloy C-4/ UNS N06455 / AFNOR NC16D16M is a nickel-chromium-molybdenum alloy with outstanding high-temperature stability as evidenced by high ductility and corrosion resistance even after aging in the 1200 to 1900°F (649 to 1038°C) range. This alloy resists the formation of grain-boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition. C-4 alloy also has excellent resistance to stress-corrosion cracking and to oxidizing atmospheres up to 1900°F (1038°C).

    Category:

    Description

    Hastelloy C-4 /UNS N06455

    Material grades and equivalents Hastelloy C-4/UNS N06455 / AFNOR NC16D16M

    Hastelloy C-4 Chemical compostion:

    %

    Ni

    Cr

    Mo

    Fe

    C

    Mn

    Si

    Co

    S

    P

    Ti

    Min.

    65

    14

    14

    Max.

    18

    17

    3

    0.01

    1

    0.08

    2

    0.01

    0.025

    0.7

    Hastelloy C-4 Physical properties:

    Density

    8.64 g/cm3

    Melting point

    1350-1400 ℃

     Hastelloy C-4 Alloy minimum mechanical properties in the room temperature:

     Alloy

    Tensile strengthRm N/mm2

    Yield strengthRP0.2N/mm2

    ElongationA5 %

    Hastelloy C-4

    783

    365

    55

     

    • Hastelloy C-4 alloy is a nickel-chromium-molybdenum alloy with outstanding high-temperature stability as evidenced by high ductility and corrosion resistance even after aging in the 1200 to 1900°F (649 to 1038°C) range. This alloy resists the formation of grain-boundary precipitates in the weld heat-affected zone, thus making it suitable for most chemical process applications in the as-welded condition. C-4 alloy also has excellent resistance to stress-corrosion cracking and to oxidizing atmospheres up to 1900°F (1038°C).

    •  Hastelloy C-4 alloy has exceptional resistance to wide variety of chemical process environments. These include hot contaminated mineral acids, solvents, chlorine and chlorine contaminated media (organic and inorganic), dry chlorine, formic and acetic acids, acetic anhydride, and seawater and brine solutions.

    • Hastelloy C-4 alloy can be forged, hot-upset, and impact extruded. Although the alloy tends to work-harden, it can be successfully deep-drawn, spun, press formed or punched. All of the common methods of welding can be used to weld HASTELLOY C-4 alloy, although theoxy-acetylene and submerged arc processes are not recommended when the fabricated item is intended for use in corrosion service. Special precautions should be taken to avoid excessive heat input.

    Specifications:

    Sheet, Plate & Strip

    SB 575/B 575(P= 43)

    Billet, Rod & Bar

    SB 574/B 574(P= 43)

     Bare Welding Rods & Wire

    SFA 5.14/ A 5.14(ERNiCrMo-7)DIN2.4611(SG-NiMo16Cr16Ti)(F= 43)

    Seamless Pipe & Tube

    SB 622/B 622(P= 43)

    Welded Pipe & Tube

    SB 619/B 619;SB 626/B 626(P= 43)

    Fittings

    SB 366/B 366(P= 43)