Chromel® 126

Heat Resistance Wire, Rod & Tubing

Concept Alloys’ Chromel Alloy 126 (formerly Hoskins Alloy 126) was developed to be chemically compatible with nickel base thermocouple alloys while providing the best possible protection at high temperatures in oxidizing environments.

Concept Alloys’ Alloy 126 is often compared with Haynes 230 and Haynes 214. These competitive alloys are often used in applications for which our Alloy 126 was designed. Haynes 214 is chemically similar to our Alloy 126. In most cases, where direct performance data is not available, it can be assumed that the data for Alloy 126 would be similar to Haynes 214. It should be noted, however, that Alloy 126 is softer than Haynes 214, due to the lower aluminum and carbon content of the Alloy 126. This makes Alloy 126 easier to fabricate.

Characteristics of Chromel 126

  • Excellent corrosion resistance
  • Excellent high temperature strength
  • Low ductility in low and intermediate temperatures (1100 – 1700°F)
  • Annealing (above 2000°F) and rapid cooling during processing can retain good room temperature ductility
  • Readily fabricated and welded; filler wire of Alloy 126 is recommended

Applications for Chromel Alloy 126

  • Thermocouple protection, thermocouple sheathing

Technical Specifications

Composition in Wt.%:

Carbon              0.02*
Aluminum        4.
Silicon               0.10*
Sulfur                 0.003*
Calcium            0.015
Chromium     20.
Manganese     0.10*
Iron                   2.5
Nickel               bal
Yttrium           0.04
Zirconium      0.06*

* denotes maximum

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