Channel steel can be used in high - temperature environments to a certain extent, but its performance will be affected. When the temperature rises, the strength and hardness of channel steel will decrease. However, if it is made of heat - resistant steel or undergoes special heat - resistant treatment, it can be used in relatively high - temperature conditions. For example, in some industrial furnaces or power plants, heat - resistant O aço canal pode ser usado para construir estruturas de suporte ., mas a exposição contínua a temperaturas extremamente altas sem proteção adequada acabará por levar à falha do aço canal .