Nitronic 60 (UNS S21800)

Nitronic 60 (UNS S21800) is known for its excellent galling resistance, even at elevated temperatures. The additions of 4% silicon and 8% manganese inhibit wear, galling, and fretting. It is commonly used for various fasteners and pins that require strength and resistance to galling. It maintains decent strength up to temperatures of 1800°F and has oxidation resistance similar to that of 309 stainless steel. The general corrosion resistance is between that of 304 and 316 stainless steel.

Equivalent Grades

Trademark	GB	GOST	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
Nitronic 60	–	–	Alloy 218	S21800	N-60	–	–	–	–	–

Chemical Composition, %

Alloy	C	Si	Mn	P	S	Cr	Ni	Mo	N	Fe
Nitronic 60	≤0.10	3.5-4.5	7.0-9.0	≤0.040	≤0.030	16.0-18.0	8.0-9.0	≤0.75	0.08-0.18	Bal

Typical Physical and Mechanical Properties (RT, Annealed)

Density, g/cm3	Melting Point, ℃	Tensile Strength, MPa	Yield Strength, MPa	ELongation, %	Hardness, HRB
8.0	1350-1380	≥655	≥345	≥35	/

Available Products and Specifications

Rod, Bar, Wire and Forgings	ASTM A276, ASTM A314, ASTM A479, ASTM A580, AMS 5848
Plate, Sheet and Strip	ASTM A240
Pipe and Tube	–
Welding Product	A5.9 ER218
Others	ASTM A193, ASTM A194, ASTM A351, ASTM A743