Stainless steel is a type of steel. Steel refers to those containing less than 2% carbon (C), which is called steel, and more than 2% is iron. Adding chromium (Cr), nickel (Ni), manganese (Mn), silicon (Si), titanium (Ti), molybdenum (Mo) and other alloy elements during the smelting process of the steel improves the performance of the steel and makes the steel corrosion resistant (Ie no rust) is what we often say about stainless steel.

Stainless steel standard parts have their own requirements for raw materials. Most stainless steel materials can be made into steel wire or bar for fastener production, including austenitic stainless steel, ferritic stainless steel, martensitic stainless steel, precipitation hardening stainless steel. So what are the principles when selecting materials?