G
For G, usable temperature range is 0 to 2320°C; source document is ANSI and IEC Color Codes, verified against its source on 2026-08-19.
- Type letter
- G verified
- Usable temperature range
- 0 to 2320°C verified
- Source document
- ANSI and IEC Color Codes verified
What the source says
G* Vacuum, Inert, Hydrogen. NONE ESTABLISHED + – TUNGSTEN W TUNGSTEN- 26% RHENIUM Beware of Embrittlement. Not Practical Below 399°C (750°F). 0 to 2320°C 0 to 38.564 NO STANDARD USE ANSI COLOR CODE G (W) W-26% Re Not for Oxidizing Atmosphere 32 to 4208°F (W)
— assets.omega.com, retrieved 2026-08-19
Source
- assets.omega.comhttps://assets.omega.com/pdf/test-and-measurement-equipment/temperature/sensors/thermocouple-probes/tc_colorcodes.pdf