Stainless Steel: Stainless Steel (不锈钢)
A corrosion-resistant steel alloy used for springs, pawls, some teeth and specialty hardware. Chromium in the alloy forms a passive surface layer that resists rust in humid or sweaty conditions. Stainless steel is stronger and more durable than plated carbon steel but harder to form and more expensive. Grade, temper and surface finish are specified, and parts are checked for burrs, magnetism and fatigue performance.