NITRONIC 60® (Alloy 218) (UNS S21800)
Fe 63, Cr 17, Mn 8, Ni 8.5, Si 4, N 0.13
NITRONIC 60 Stainless Steel is available in bar forging billets, sheet, strip plate, forgings, castings, and seamless tubing. NITRONIC 60 was covered by U.S. Patent 3,912,503.
NITRONIC 60 is not hardenable by heat treatment, as it is an austenitic alloy. Annealing at 1950°F followed by water quenching is recommended for best corrosion resistance. High strengths can be attained easily by cold working or hot working, without subsequent Solution annealing.
Grade UNS S21800
ASTM A276 – Bars and Shapes
ASTM A314 – Stainless and Heat-Resisting Steel Billets and Bars for Forging
ASTM A479 – Bars and Shapes for Use in Boilers and Other Pressure Vessels
ASTM A580 – Wire
ASTM A193 – Bolting (Grade B8S)
ASTM A194 – Nuts (Grade B8S)
ASTM A240 – Heat-Resisting Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels
ASTM A351 – Austenitic Steel Castings for High Temperature Service (Grade CF 10S MnN)
ASTM A743 – Corrosion Resistant Iron-Chromium, Iron-Chromium-Nickel and Nickel-Base Alloy Castings for General Application (Grade CF 10S MnN)
AMS 5848 – Bars, Forgings, Extrusions, Tubing and Rings
ASME Design Allowables listed in Table UHA-23 of Section VIII, Division 1 ASME Design Values Listed in Section III Division 1, Table I-72