CuCo1Ni1Be/CW103C Cobalt Nickel Beryllium Copper Chemical Composition: Be: 0.40-0.70% Co: 0.80-1.30% Ni: 0.80-1.30% Cu: Balance Note: Copper plus additions equal 99.5% minimum. Shapes : Round bars, Round wires, Round tube, Flat bars, Square bars, Rectangular bars, Hexagon bars, Plates, Sheets, Coils Custom shapes are available upon request. Available Sizes: Rod: Dia.5~16mm; Wire: Dia.0.1-5.0mm Tube: OD10~60mm, ThK 0.1~10mm Plate: thk min 0.5mm Custom Diameter & Sizes, Random Mill lengths Typical Physical Properties: Density (g/cm3): 8.83 Density before age hardening (g/cm3): 8.75 Elastic Modulus (kg/mm2 (103)): 14.10 Thermal Expansion Coefficient (20 °C to 200 °C m/m/°C): 17 x 10-6 Thermal Conductivity: 209 W/m � oK at 20 C Melting Range (°C): 1000-1070 Note:  1). the units are based upon Metric. 2). the typical physical properties apply to age hardened products. Related Standard : Rods/Bars/Tubes: ASTM B441, SAE J461,463; RWMA Class 3 Sheets: ASTM B534 Wires: ASTM B441 Plates: ASTM B534, SAE J461,463; RWMA Class 3 European Standards: CuCo1Ni1Be, CW103C to EN Other material are also available C17200/CuBe2/CW101C/DIN 2.1247 C17300/CuBe2Pb/CW102C/DIN 2.1248 C17500/CuCo2Be/CW104C/DIN 2.1285 C17510/CuNi2Be/CW110C/DIN 2.0850 CuCo1Ni1Be/CW103C