C19700 (ASTM B465) Alloy Data Specifications

A second generation High Performance Alloy developed by Olin Brass, C197 offers strength and formability similar to C194 but with higher electrical and thermal conductivity. High conductivity allows C197 to replace traditional brasses and bronzes in applications where high current-carrying capacity is required. For applications with prolonged exposed to elevated temperatures designers should also consider C19720 for improved resistance to stress relaxation. For more information contact Olin Brass Market Development Engineering at 618-258-5255, OlinBrass.com or email us at info@olinbrass.com.

 

Chemical Composition

Copper Remainder
Iron 0.30-1.2%
Magnesium 0.01-0.2%
Phosphorus 0.10-0.40%
Cobalt 0.05% max
Lead 0.05% max
Manganese 0.05% max
Nickel 0.05% max
Tin 0.20% max
Zinc 0.20% max

 

Physical Properties

  English Units Metrics Units
Density 0.319 lb/in3 @ 68oF 8.84 g/cm3
Thermal Conductivity 185 BTU-ft/ft2-hr-oF 320 W/moK
Electrical Resistivity 13.0 ohm circ mils/ft 2.16 microhm-cm
Electrical Conductivity (annealed) 80% IACS* 0.464 megamho/cm
Electrical Conductivity (rolled) 77% IACS* 0.447 megamho/cm
Modulus of Elasticity 17,200,000 psi 121 kN/mm2
Coeff. of Thermal Expansion
  68-572oF (20-300oC) 9.6 PPM/oF 17.28 PPM/oC

*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 43-53 296-366 23 160 20 min - -
1/2 Hard 53-63 365-435 48 330 17 0.5 0.5
Hard 60-70 415-483 60 415 7 1.0 1.0
Extra Hard 67-73 460-505 67 460 6 1.5 1.8
Spring Hard 70-76 485-525 70 485 5 2.0 2.5
Extra Spring 73-80 505-550 73 505 1 min

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.