Beryllium Copper Alloy C17510

  • Beryllium Copper Alloy C17510
  • General Characteristics

    C17500/C17510 offer a combination of high electrical and thermal conductivity with good strength compared to most copper based alloys. C17500 alloy is the mirror image of alloy C17510 in terms of its properties and characteristics. The alloys differ in that C17500 specifies a cobalt alloying addition (2.40-2.70 %) and alloy 17510 specifies a nickel alloying addition (1.40-2.20 %), but their performance are the same. Typical uses: fuse clips, fasteners, springs, switch and relay parts, electrical conductors and welding equipment.

  • Typical Chemical Composition

    Weight % Be Ni Fe Cu Other
    minimum 0.40 1.40 98.00
    maximum 0.70 2.20 0.10 0.50
  • Physical Properties

    Characteristics English Metric
    Nominal density

    (68°F/20°C)

    0.316 lbs/in3 8.75 g/cm3
    Specific heat

    (212 °F/100°C)

    0.10 BTU/lb – °F 420 J/KG- °K
    Melting range 1900-1980 °F 1040-1080 °C
    Coefficient of thermal

    expansion

    68°F – 392°F

    20°C – 200°C

    9.8 micro in/in- °F 17.6 micro m/m- °K
    Electrical resistivity 20°C   /   68°F 29-86 nΩ ∙ m
  • Mechanical Properties

    Temper Tensile Electrical

    Conductivity

    Ultimate Yield Elongation in

    50 mm

    (2 in.)

    %IACS
    KSI MPa KSI MPa % %IACS
    TB00 – Solution

    Heat Treated

    1.27-6.35 mm

    (0.05-0.50 in.)

    35-55 241-378 10-30 69-207 20-60 20-30
    TD04 – Solution

    Heat Treated and

    Cold Worked:

    Hard (H)

    1.27-6.35 mm

    (0.05-0.50 in.)

    65-80 447-550 55-75 378-516 2-20 20-30
    TF00 – Precipitation Hardened (AT)

    3 hr at 482-496°C

    1.27-6.35 mm

    (0.05-0.50 in.)

    100-130 688-895 80-110 550-757 10 min 45-60
    TH04 – Hard and Precipitation

    Heat Treated (HT)

    2 hr at 482-496°C

    1.27-6.35 mm

    (0.05-0.50 in.)

    110-140 757-964 95-125 655-860 10 min 48-60

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