The ink in the edding permanent markers is heat-resistant up to approx. 130°C.
For marking that needs to be heat-resistant to higher temperatures, we recommend our edding 750, edding 751 and edding 780 paint markers. Their opaque, paint-like ink is permanent and is suitable for marking on almost any material. The ink is heat-resistant up to 400°C, and in the following colours is still visible up to 1000°C: yellow (005), orange (006), brown (007), violet (008), pink (009), light blue (010), white (049) and silver (054).