Alloys: LEONI Histral® H65

Copper based alloy, CuAg10

Technical data

Nominal values: Tempered Hard
Resistivity* (Ohm mm2/m) 0.0216 0.0246
Electrical Conductivity* (% IACS) 80 70
Tensile Strength* (N/mm2) 300 750
Elongation* (%) 30 1
Temperature Coefficient of Resistance (1/°C) 0.00255 0.00255
Density (g/cm3) 9.1 9.1

* Data depend on coating conditions, degree of cold working and thermal treatments during manufacturing process 


  • Coating: Bare, Silver, Nickel, Tin, Gold
  • Temper: Tempered or hard
  • Single end conductors
  • Stranded conductors
  • Bunched conductors
  • Concentric lay conductors
  • Single end size ≥ 0.025 mm (AWG 50)
  • Other diameters or special constructions are available

** Depending on material combination & construction

Excellent properties

High electrical conductivity

The 10 % silver portion of the LEONI Histral® H65 alloy ensures very good electrical conductivity without relinquishing any of its excellent mechanical resilience. Hence, the material lends itself exceptionally well to strands consisting of very fine wires made into small cross-sections.

High mechanical strength

LEONI Histral® H65 is an alloy composed of copper at 90 % and silver at 10 %. Having been drawn down cold, this material preserves its outstanding mechanical properties coupled with good electrical qualities. Therefore, it is particularly suited for any environment characterized by significant mechanical stress.

Flex Life

LEONI Histral® H65 gives excellent performance levels in situations where vibration or constant flexing are present.

Very good high temperature performance

The high tensile strength is maintained even at high temperatures.

Special applications

High-frequency micro cables

LEONI Histral® H65 material lends itself exceptionally well to conductors with fairly small cross-sections. Wires as thin as 0.03 mm (AWG48) and strands up to 7 ends using single wire this thin (AWG 40) have already been produced successfully. It might be advisable to use silver-plated wire in coaxial cables.

Medical technology

Since LEONI Histral® H65 is extremely suitable for miniaturisation, it can be made good use of in medical technology. Cables employed in that field may be subjected to heavy tensile stress in the wake of conductors being yanked or bent. This calls for perfect precision, reliability and an extraordinary resilience, for the patients’ safety has to be considered as the top priority at all times.


On account of its excellent mechanical properties, LEONI Histral® H65 can be smoothly processed into wires featuring a diameter as low as 0.025 mm (AWG 50) while maintaining all its relevant qualities.

Custom solution services

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