Material Database

Palysium / Hera 6307

Palysium is a recently developed Heraeus-alloy which is specially tailored for probing applications. It is characterized by very high electrical conductivity combined with excellent mechanical properties and good workability. High electrical conductivity opens new applications and can reduce the cost of semiconductor-testing. Significantly more current can be transmitted with the same cross-sectional area. Thus, high-power applications can be tested. At the same time, the needles can shrink considerably at the same current, which has a positive effect on the pitch, the pin count and testing parallelism.

  • General Designation: Palysium
  • Applications: Springs, probes
  • Product Forms: wire
  • Density (g/cm³): 10.52


Material Behaviour
Forming Process
formable, machinable

Current Carrying Capability (CCC)*, mA
Maximum Allowable Current (MAC)*, mA
IACS Min. (%) [100% IACS ≙ 58 S*m/mm²]
IACS Max. (%) [100% IACS ≙ 58 S*m/mm²]
*41 μm diameter, 8 mm length, flat tip and end, overtravel 75 μm, offset 250 μm, 120 s current cycle time, 10 s off-time between cycles, room temperature

Young's Modulus (GPa)
Property Range
Hardness (HV)
Tensile Strength (MPa)
Yield Strength (MPa)
Elongation (%)
400 - 480 1250 - 1500

Melting Range
From Temperature (°C)
To Temperature (°C)
1100 1190
Thermal conductivity (W /(m*K)) [RT]
Thermal conductivity - HT¹
Specific Heat (J/(g*K)
Sources Thermal
1 measured


The information in this data sheet contains only general information on the use of our products or examples for their application. They do not release the customer from a careful inspection of the delivered product for its fitness for the customer's particular purpose of use. Any customer's special requests regarding the particular use of a product will only be authoritative if Heraeus has confirmed to the customer in writing at the time of conclusion of a corresponding contract that the product delivered is fit for the customer's intended use. Heraeus, therefore, does not guarantee the correctness and completeness of the information regarding the customer's intended use. The customer's purchase will be governed exclusively by the written order confirmation of Heraeus and the Heraeus General Terms of Sale and Delivery, which are available at This data sheet may be subject to changes at any time.

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