Stainless Steel Fasteners with higher amounts of chromium and nickel as compared to other grades are referred as austenitic stainless steel. This steel is generally non-magnetic in nature. Austenitic steels have high corrosion resistance and cannot be hardened by heat treatment. The tensile strength of these Stainless Steel Fasteners range from 75000 to 105000 psi in as rolled condition.
Heat treated fasteners with martensite grain structure is the specialty of martensitic Fasteners. With chromium content of 12%-18%, these stainless steels have poor welding characteristics with magnetics nature. Since this steel can be hardened by heat treatment tensile strength of 70000 to 145000 psi can be achieved.
Below is the list of most common martensitic stainless steel grades.
Ferrite grain structure is the specialty of Ferritic fasteners With chromium content of 12%-18%, these stainless steels have carbon content lesser than 0.2% enhancing poor welding characteristics with magnetics nature. Below is the list of most common Ferritic stainless steel grades.
Stainless Steel Fasteners Most familiar by the name iron-nickel alloys containing more than one precipitation hardening elements like titanium, aluminium, copper, niobium, and molybdenum. This stainless steel have high mechanical properties including the tensile strength and higher corrosion resistance.
Precipitation hardening steels are further divided into three different types.