C19025 (ASTM B422) Alloy Data Specifications

Olin Brass Alloy C19025 has been introduced to meet the needs of the automotive, electronic, and electrical markets. This alloy is licensed by Olin Brass from Dowa Metals. It was developed as Alloy NB109 to meet increasing requirements of current carrying capacity, stiffness, formability and service temperature survivability demanded by automotive and electronic terminal designers. Should higher electrical conductivity or strength be required, consider 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 0.80-1.2%
Tin 0.70-1.1%
Phosphorus 0.03-0.07%
Zinc 0.20% max
Iron 0.05% max

1Copper plus named elements, 99.7%

Physical Properties

  English Units Metrics Units
Density 0.322 lb/in3 @ 68oF 8.91 g/cm3
Thermal Conductivity 100 BTU-ft/ft2-hr-oF 173 W/moK
Electrical Resistivity 25.93 ohm circ mils/ft 4.31 microhm-cm
Electrical Conductivity (annealed) 40% IACS* 0.232 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
1/4 Hard 47-69 325-475 53 365 25 - -
1/2 Hard 63-76 435-525 66 455 15 0.5 0.5
Hard 72-83 495-570 76 525 10 0.8 1.0
Extra Hard 78-89 540-615 80 550 8 1.3 1.8
Spring Hard 84-95 580-655 87 600 6 2.0 2.8
Extra Spring 91-106 625-730 97 670 4

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.