Case Study of Corrosion Resistance on New Roofing Screws in Corrosive Environments

摘要

The current problem with the roof screws is corrosion that can cause damage to the roof structure of the building. This study aims to obtain the level of corrosion resistance from various new roof screws on the market. There are 5 types of new roof screws, 3 types of environments, and 3 types of corrosion experimental models that have been done. The corrosive environmental composition of NPK and UREA is 2 kg then dissolved in 2 liters of pure water to show saturated condition. The results show that the new roofing type of SUS-304 has excellent corrosion resistance in 3 corrosive environments and 3 types of corrosion experiments but the roofing type H has a very high corrosion rate.