Nitronic 50 (XM-19/UNS S20910/1.3964)

Nitronic 50 (XM-19/UNS S20910/1.3964) is a high strength and good corrosion resistant austenitic stainless steel. It has nearly double the yield strength of 304 and 316 stainless steel and has better corrosion resistance than 317L stainless steel. It remains non-magnetic even after being severely cold worked. It maintains strength at high temperatures as well as sub-zero temperatures.

Equivalent Grades

Trademark	GB	GOST	ASTM	UNS	DIN	W.Nr.	NF	BS	JIS	SS
Nitronic 50	–	–	XM-19	S20910	N-50	1.3964	–	X2CrNiMnMoNNb 21-16-5-3	–	–

Chemical Composition, %

Alloy

Nitronic 50

≤0.06

≤1.00

4.0-6.0

≤0.030

20.5-23.5

11.5-13.5

0.1-0.3

≤0.25

0.2-0.4

0.1-0.3

Bal

Typical Physical and Mechanical Properties (RT, Annealed)

Density, g/cm3	Melting Point, ℃	Tensile Strength, MPa	Yield Strength, MPa	ELongation, %	Hardness, HRB
7.80	1400-1430	≥690	≥380	≥35	/

Available Products and Specifications

Rod, Bar, Wire and Forgings	ASTM A314, ASTM A479, ASTM A276, ASTM A580, ASTM A182
Plate, Sheet and Strip	ASTM A240, ASTM A412
Pipe and Tube	ASTM A249, ASTM A269, ASTM A312, ASTM A403, ASTM A358
Welding Product	–
Others	ASTM A193, ASTM A194

Features

High strength austenitic alloy
Good corrosion resistance
Low magnetic permeability

Applications

Nitronic 50 is an effective alloy for the petroleum, offshore, subsea, petrochemical, chemical, fertilizer, nuclear fuel recycling, pulp and paper, textile, food processing and marine industries. Components using the combination of excellent corrosion resistance and high strength currently include pumps, valves and fittings, fasteners, cables, chains, marine hardware, boat and valves shafting, heat exchanger parts, and springs. Nitronic 50 is especially suitable for cryogenic application thanks to its excellent impact strength at -196℃.