C19020 (ASTM B422) Alloy Data Specifications

Olin Brass introduces Alloy C19020 to meet the needs of the automotive, electronic, and electrical markets. This alloy is licensed by Olin Brass from Dowa Metals in Japan. It was developed as Alloy NB105 to meet increasing requirements of current carrying capacity, stiffness, formability and service temperature survivability being demanded by the automotive and electronic industries. For higher electrical conductivity or strength requirements, consider C19720 or C18080. 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
Nickel 0.50-3.0%
Tin 0.30-0.9%
Phosphorus 0.1-0.20%

1Copper plus named elements, 99.8%

Physical Properties

  English Units Metrics Units
Density 0.322 lb/in3 @ 68oF 8.91 g/cm3
Thermal Conductivity 115 BTU-ft/ft2-hr-oF 200 W/moK
Electrical Resistivity 20.74 ohm circ mils/ft 3.45 mircohm-cm
Electrical Conductivity (annealed) 50% IACS* 0.290 megamho/cm
Modulus of Elasticity 18,800,000 psi 129 kN/mm2
Coeff. of Thermal Expansion
  68-572oF (20-300oC) 9.7 PPM/oF 17.5 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
1/2 Hard 58-70 400-485 63 435 7 0.5 0.5
Hard 65-74 450-510 67 460 5 0.8 1.0
Extra Hard 71-80 490-550 73 505 4 1.3 1.8
Spring Hard 77 min 530 min 74 min 510 min 3 2.0 2.8

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.