Alloys: LEONI Histral® H88

Copper based alloy, CuCrFeTiAgSi

Technical data

Nominal values: Tempered Hard
Resistivity* (Ohm mm2/m) 0.0203 0.0216
Electrical Conductivity* (% IACS) ≥85 ≥80
Tensile Strength* (N/mm2) ≥414** ≥600
Elongation* (%) ≥8** >1
Temperature Coefficient of Resistance (1/°C) 0.00300 0.00300
Density (g/cm3) 8.9 8.9

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

** Tempered


  • EN 2083 together with ASTM B8 and ASTM B298/ASTM B961

  • DIN 48200 ff.


  • Coating: bare, silver, gold
  • Temper: hard-drawn or thermal stress-relieved
  • Single-end conductor (only in hard) 0.32 mm (AWG 28) > Ø ≥ 0.025 mm (AWG 50)
  • Concentric lay conductors
  • Stranded conductors
  • Braided conductors

*** Depending on material combination & construction

Special properties

Environmentally friendly

As with the entire LEONI Histral® range of materials, H88 is environmentally friendly and fully RoHS compliant. Our product is therefore a sustainable alternative to the health hazards posed by copper-cadmium alloys.

If you are thinking of switching to environmentally friendly materials, we will be happy to advise you and support you with any certified products you may require.

Very good conductivity

In its tempered stated, the conductivity of LEONI Histral® H88 reaches approx. 85% IACS (International Annealed Copper Standard) and therefore outperforms most alternative materials in its category. In many application areas, the requirements from specifications are significantly exceeded.

High flex life performance

The exceptionally good values achieved by LEONI Histral® H88 offer maximum stability in vibration- and motion-rich environments.

Low weight

Opportunities for narrower diameters combined with the material’s excellent properties mean that LEONI Histral® H88 can be effectively deployed in order to achieve weight reductions. This is a key argument for its use, especially in the aviation industry.

High mechanical strength

LEONI Histral® H88 is a high-strength and highly conductive copper alloy that significantly exceeds the properties of conventional copper-cadmium alloys. Thanks to its excellent tensile strength, the material is ideal for use in areas where cables are exposed to high loads during installation and operation. The material has proven to be a particularly good choice for drag chains in machinery manufacturing or for interconnecting loudspeaker membranes subject to constant vibration. In medical technology, wires are used with the very finest single-end conductor diameters down to 0.025 mm/AWG 50.

High temperature resistance

LEONI Histral® H88 maintains its good mechanical and electrical properties even in high-temperature applications up to 260 °C.
If cable production involves a sintering process, steps must be taken to avoid temperatures >380 °C. The sintering process itself must last only a few seconds. The subsequent cooling process should be gentle (no quenching).

Special applications

Rail applications

LEONI Histral® H88 is now very well-established as a material for use in overhead line systems for high-speed lines. The vertical suspension cable connecting the aerial messenger to the contact wire is subjected to extreme mechanical, electrical and thermal loads. As it passes through, the power consumption of an ICE, Shinkansen or TGV train will rapidly heat these suspension cables. At the same time, the suspension cables have to compensate for the strong vibrations in the entire overhead contact line section, as caused by the pantograph’s high contact pressure. This is where LEONI Histral® H88 keeps going long after conventional materials used in overhead line construction have failed.

Shielding braids

As a result of its exceptional strength, LEONI Histral® H88 is particularly suitable for shielding cables subject to excessive mechanical stress. Another advantage here is the possibility of miniaturisation. Our material offers a space-optimised solution especially in cases where many cables have to be installed in cramped conditions.


Automation technology and robotics make exceptionally high demands on wires used for signalling. LEONI Histral® H88 offers a reliable solution for constantly cycling loads such as bending and torsion combined with strong vibrations.

Membrane connections for loudspeakers

Connecting cables in loudspeakers are exposed to extremely strong vibrations. Here, wires made from LEONI Histral® H88 are processed into special-purpose braids that are used to connect up the membranes (oscillating coil).

Medical technology

LEONI Histral® H88 has been a reliable component in signal cables for specialised micro-operation devices for several years. In cardiac catheter exams, for example, a miniature camera is guided through the veins to the heart. In some cases, connecting cables may be subjected to high tensile loads as a result of cables being suddenly jerked or kinked in the process. Maximum reliability in the smallest of installation spaces is essential here. Not least because the safety of the patient is paramount.


The exceptionally high mechanical strength offered by the LEONI Histral® H88 alloy means that the material can be easily drawn into wires with a diameter of 0.025 mm (AWG 50) without losing performance capabilities.

Microdata lines

Electronic devices are becoming smaller and smaller, and yet even more powerful. From clamshell mobile phones and laptops to other miniaturised devices, ultra-thin wires are used for data transmission in all of these products. Silver-coated single-end conductors with diameters as small as 0.025 mm (AWG 50), with strands up to 7x Ø 0.025 mm (AWG 42) are used here.

Custom solution services

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