〜 Auxiliary material of phosphor bronze material 〜
"Phosphor bronze is a metal that deoxidizes the copper oxide contained inside bronze by adding phosphorus to bronze, which is an alloy of copper and tin. By removing copper oxide that exists as rust, strength and hardness are improved. It is a material with improved wear resistance and elasticity. It is used for bolts and nuts, bearings and gears, spring materials, etc. "