Platinum-Rhodium & Thermocouple Alloys

Precision Noble Metal Alloys for High-Temperature Measurement

Accurate temperature measurement depends on more than sensor design. It begins with the material itself.

Noble-metal thermocouples are specified for high-temperature environments where base-metal thermocouples cannot maintain long-term accuracy. Even minor variations in alloy composition or contamination during manufacturing can affect thermoelectric output, causing calibration drift and measurement errors.

Sigmund Cohn Corp. manufactures precision platinum and platinum-rhodium thermocouple wire with exceptional compositional control and manufacturing consistency to ensure reliable performance in demanding thermal environments.

Standard Thermocouple Types

Our thermocouple materials are manufactured to recognized calibration standards including:

• ASTM E230

• ITS-90

• NBS 561/IPTS-48

Available product forms include precision wire, ultra-fine wire, ribbon, and strip manufactured to exacting dimensional and metallurgical specifications.

Benefits

• Stable thermoelectric performance

• Exceptional oxidation resistance

• Long service life

• Excellent calibration stability

• Consistent manufacturing quality

• Precision alloy composition

Typical Applications

• Industrial furnaces

• Heat treatment equipment

• Semiconductor manufacturing

• Aerospace engines

• Scientific instrumentation

• Laboratory equipment

• Power generation

• Process control systems

Whether you're developing a high-temperature sensor, qualifying thermocouple materials, or optimizing measurement accuracy, our engineering team can help identify the right alloy, wire diameter, calibration standard, and manufacturing solution for your application.

Contact Sigmund Cohn Corp. to discuss your thermocouple wire requirements or request a quote.