Platinum

High-Purity Platinum for Critical Engineering Application

When components must operate in corrosive environments, elevated temperatures, or long-term implantable applications, engineers frequently specify platinum because few materials can match its combination of corrosion resistance, electrical stability, biocompatibility, and manufacturing versatility.

Platinum's noble-metal characteristics make it exceptionally resistant to oxidation and chemical attack while maintaining stable electrical properties throughout its service life. Its high density also provides excellent radiopacity, making it ideal for implantable medical devices and image-guided procedures.

For more than 125 years, Sigmund Cohn Corp. has manufactured precision platinum products engineered for applications where reliability and consistency are essential.

Available Platinum Grades

  
      Grade
      Purity
      Typical Resistivity (Ω/cmf)
      Density
      Melting Point
    
      Reference Grade
      99.99%+
      ~57.6
      21.45 g/cm³
      1769°C
    
      Commercial Grade
      99.95%
      ~61
      21.45 g/cm³
      1769°C

Ultra-high-purity 99.995% platinum is also available for the most demanding thermometry, laboratory, and analytical applications.

Reference Grade platinum is typically selected for RTDs and thermocouples where predictable resistance-temperature characteristics are critical. Commercial Grade platinum supports a broad range of medical devices, aerospace components, electronics, industrial instrumentation, and custom-engineered products.

Available product forms include:

Precision wire
Ultra-fine wire
Ribbon
Strip
Rod
Seamless tubing
Custom fabricated components

Why Engineers Specify Platinum

Exceptional corrosion and oxidation resistance
Excellent biocompatibility
Outstanding radiopacity
Stable electrical characteristics
High-temperature performance
Excellent formability and fabrication characteristics

Typical Applications

Implantable medical devices
Catheters and guidewires
Radiopaque marker bands
RTDs
Thermocouples
Aerospace instrumentation
Electronic components
Automotive safety systems
Coin blank planchets

Contact our engineering team to discuss your platinum application or request a quote.