C19500 (ASTM B465) Strescon Alloy Data Specifications

Alloy C19500, Strescon, is a high strength, high electrical conductivity copper alloy. Use in a range of applications and specifically electrical hardware this alloys offers a balanced combination of strength and conductivity. This alloy allows parts to be reduced in size without sacrificing performance in many cases. Designers requiring an alloy with improved resistance to stress relaxation should also consider C19025 or C18080 for enhanced performance. 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 96.0% min
Iron 1.0-2.0%
Phosphorus 0.01-0.35%
Cobalt 0.30-1.3%
Tin 0.10-1.0%
Zinc 0.02% max
Aluminum 0.02% max
Lead 0.02% max

Physical Properties

  English Units Metrics Units
Density 0.322 lb/in3 @68oF 8.92 g/cm3
Thermal Conductivity 115 BTU-ft/ft2-hr-oF 200 W/moK
Electrical Resistivity 20.80 ohm circ mils/ft 3.94 microhm-cm
Electrical Conductivity (annealed) 50% IACS* 0.293 megamho/cm
Modulus of Elasticity 17,300,000 psi 121 kN/mm2
Magnetic Permeability 1.1-1.15µ 1.1-1.15µ
Coeff. of Thermal Expansion
  68-572oF (20-300sup>oC) 9.6 PPM/oF 17.3 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 50-60 345-415 28 195 26 - -
1/4 Hard 60-72 415-495 57 395 14 0.3 0.3
1/2 Hard 68-78 470-540 71 490 6 0.8 0.8
3/4 Hard 75-85 515-585 77 530 3 1.0 1.3
Hard 85-90 565-620 83 570 2 1.5 1.8
Spring 88-97 605-670 88 605 2 2.5 2.5

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