C15100 (ASTM B747) Alloy Data Specifications

Alloy C151 was developed by Olin Brass for specific applications demanding high electrical conductivity and excellent resistance to stress relaxation at elevated temperatures. As a precipitation hardened alloy these properties are combined with good strength and bend form ability to make Alloy C151 a material that meets the demands of a wide variety of applications including electronic devices, power switching systems and automotive hybrid electrical systems. For more information contact Olin Brass Market Development Engineering at 618-258-5255, OlinBrass.com or email us at info@olinbrass.com.

Chemical Composition

Copper1 Remainder
Zirconium 0.05-0.15%

1Copper plus named elements, 99.9% min

Physical Properties

  English Units Metrics Units
Density 0.323 lb/in3 @ 68oF 8.94 g/cm3
Thermal Conductivity 208 BTU=ft/ft2-hr-oF 371 W/moK
Electrical Resistivity 10.9 ohm circ mils/ft 1.81 microhm-cm
Electrical Conductivity (annealed) 95% IACS* 0.551 megamho/cm
Electrical Conductivity (rolled) 90% IACS* 0.522 megamho/cm
Modulus of Elasticity 17,500,000 psi 123 kN/mm2
Coeff. of Thermal Expansion
  68-572oF (20-300oC) 9.7 PPM/oF 17.6 PPMoC
  68-392oF (20-200oC) 9.4 PPM/oF 17.0 PPMoC
  68-212oF (20-100oC) 9.1 PPM/oF 16.3 PPMoC

*International Annealed Copper Standard

Mechanical Properties

Temper1 Tensile Strength Yield Strength2 % Elongation2 Typical 90o Bend Formability GW/BW3
ksi N/mm2 ksi N/mm2
Annealed 37-42 255-290 13 90 38 - -
1/4 Hard 40-45 275-310 35 240 22 - -
1/2 Hard 43-51 295-350 42 290 10 - 0.25
3/4 Hard 47-56 325-385 50 345 5 0.50 0.50
Hard 53-62 365-425 56 385 3 1.00 1.50
Extra Hard 59-65 405-450 60 415 2 1.50 2.00
Spring Hard 64-71 440-490 66 455 1 2.00 2.50

1Mechanical properties subject to change. All tempers listed are made to a Tensile Strength specification unless otherwise noted.
2Nominal Values
3DATA FOR REFERENCE ONLY. R/T = Bend Radius/Material Thickness <0.016" (0.4mm) thick, 11/16 (17.5mm) wide.