High Temperature PVD Coatings: Strong Heat Advice

Summary for high temperature pvd coatings Discussion

high temperature pvd coatings are discussed as a possible way to keep gas burners and firepit parts looking gold at elevated heat, but the thread makes clear that the limiting factor is usually the substrate, not the PVD layer itself. Max Oyler asked about a gold-colored coating that could survive 900 °F on cooking-product burners after titanium nitride oxidized and turned silver, and noted that solid 10k gold might be too expensive. Munawwer Mohd later asked whether PVD is fire/heat resistant for fire pits. The answerer explained that PVD coatings are deposited at very high temperatures for wear resistance, typically around 400 to 500 °C, and that the coating itself can withstand much higher temperatures depending on the specific coating. The key caution is that performance depends on the substrate/coating combination; stainless steel was suggested as a better base material.