Stainless Steel Grade AISI 216 | S21600

AISI 216 | S21600 is a non-standard austenitic stainless steel of the 200 series. It is commonly referred to as AISI type 216 chromium-manganese-nickel steel. The high content of manganese (Mn = 7.5 - 9.0%), chromium (Cr = 17.5 - 22.0%) and 5.0 - 7.0% nickel + 2 - 3% molybdenum in its composition makes this steel one of the best of the 200 series. In general, it is characterized by good corrosion resistance, high elasticity, toughness and strength.

Density of steel = 7.7 g/cm³. Non-magnetic.

Features of steel

One of the most widely used industrial grades of precipitation hardening. Although the alloy is soft and ductile in the solution annealed state, it is capable of acquiring high properties after a single precipitation or aging treatment.

Machinability

Long sticky chips characterize the machinability of the metal of this alloy. It can be processed in the annealed state. Treatment of parts with a solution after mechanical treatment is necessary before final hardening if mechanical treatment is carried out under such conditions.

Welding

This alloy is weldable by conventional melting and resistance methods. It should not be welded by oxyacetylene welding. If necessary, it is recommended to use filler metal.

Forging

Before forging, hold for 1 hour at 1177 °C. Do not work at temperatures below 1010 °C. After-work treatment with a solution is required before final hardening.

Mechanical properties