Heat resistance Aluminium Coatings (ThermoKote ALU 610) Heat resistance till 610°C (Aluminium) The corrosion protection of high heat areas associated with high temperatures is the perennial problem to the industry. Monarch ThermoKote range High Temperature Coatings protect the steel structural against atmospheric corrosion and under insulation corrosion up to 1000°C (1832°F). The coatings can even be sprayed to hot surface till 120°C (248°F). The excellent resistance to thermal shock as a result of rapid temperature cycling, extends life expectancy of assets.