C17200 BeCu / Alloy 25

    C17200 BeCu / Alloy 25

    C17200 Beryllium Copper (BeCu), also commonly known as Alloy 25, combines high strength with non-magnetic and non-sparking qualities. It has excellent metal working, forming, non-galling, and machining qualities.  Since they do not trade high strength for conductivity, they are well suited to address the challenges in connectors and other harsh-environment components. Strength, conductivity, ductility, corrosion resistance, machinability, and low friction properties make BeCu alloys ideal for downhole directional tools including MWD/LWD housings, drill bit bearings, subsea actuator stems, subsea xmas trees, connectors/contacts, and assisted lift pumps.

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    Specification/Condition

    • UNS172000, NACE M1075, ASTM B196/ASTM B251/ ASTM B643 / Cond AT & HT /

    Applications

    • downhole directional tools
    • M/LWD pressure housings
    • drill bit bearings
    • subsea actuator stems
    • subsea xmas trees
    • assisted lift pumps

    Technical Data (AT/HT)

    Temper Yield Strength  (KSI) Tensile Strength (KSI) Elongation (EL) Hardness (HRC)
    AT 145-175 (up to 3″ dia.)
    130 – 175 (over 3″ dia.)
    165-200 4-10 (up to 3″ dia,)
    3-10 (over 3″ dia.)
    36
    HT 155-195 (3/8″ to 1″ dia.)
    145-190 (1″ to 3″ dia.)
    180-220 (3/8″ to 1″ dia.)
    175-215 (1″ to 3″ dia.)
    2-9 (3/8″ to 1″ dia.)
    4-9 (1″ to 3″ dia.)
    36

    Stocking Dimensions

    • Bar: 0.750″ – 5.500″OD
    • Tubing: various configurations

     

    Chemical Composition (Wt %)

     

    Beryllium

    (Be)

    Nickel + Cobalt

    (Ni+Co)

    Nickel + Cobalt + Iron

    (Ni+Co+Fe)

    Cobalt

    (Co)

    Nickel

    (Ni)

    Iron

    (Fe)

    Silicon
    (Si)
    1.80 – 2.00 0.200 – 0.350 0.600 Max 0.200 Min 0.100 Max 0.100 Max 0.150 Max

     

    Aluminum
    (Al)
    Tin

    (Sn)

    Zinc

    (Zn)

    Chromium

    (Cr)

    Lead

    (Pb)

    Copper

    (Cu)

    0.100 Max 0.050 Max 0.050 Max 0.010 Max 0.010 Max Balance

     

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