Nitronic 50 (XM19/ AMS 5764)

Technical Data Sheet

Nitronic 50 is a nitrogen-strengthened austenitic stainless steel that has properties that combine excellent strength, ductility, toughness, corrosion resistance and fabricability. Nitronic 50 is a very versitile and useful alloy due to it retaining its very good mechanical properties at both elevated and sub-zero temperatures. Also Nitronic 50 has outstanding corrosion resistance (greater than alloy 316 and 316L) and it is an effective alloy for use in the Petroleum, Chemical, Marine, Nuclear, Pulp and Paper, Textile, Food Processing industries.

Chemical Composition Limits
Weight% C P Si Ni Nb (Cb) N Mn S Cr Mo V Fe
Nitronic 50 0.06 max 0.040 max 1.00 11.5-13.5 0.10-0.30 0.20-0.40 4-6 0.030 max 20.5-23.5 1.5-3.0 0.10-0.30 Bal

Typical Mechanical Properties


Alloy Condition Tensile of Strength (ksi) Yield Strength (ksi) Elongation (%)
Reduction of Area % Hardness HRC
Nitronic 50 Annealed AMS 5764 100 55 35 55 >20
Material is annealed at 1065°C to 1120°C (1950°F to 2050°F)

Nitronic 50 is available as Bar (Bar Stock List), Wire, Sheet, Plate, Strip, Coil, Fasteners, Forgings and Forging Billets. For all stock availability contact Sales.

Nitronic 50 is also available strain-hardened for increased strength and hardness. Different levels of strength can be achieved as in the following table:

Alloy Strength Level Diameter Range Ultimate Tensile Strength ksi (min) Yield Strength ksi (min) Elongation (min)
Reduction of Area (min)
Nitronic 50 HS 1 0.125" - 4.00" 110 90 35 55
Nitronic 50 HS 2 0.125" - 4.00" 135 105 20 50
Nitronic 50 HS 3 0.125" - 3.50" 160 130 15 45
Nitronic 50 HS 4 0.062" - 2.00" 180 145 12 45
Nitronic 50 HS 5 0.062" - 1.50" 200 180 10 45

AMS 5764 Bar / Forgings / Rings
ASTM A314 / ASME SA314
ASTM A479 XM19
ASTM A276 XM19
ASTM A240 / ASME SA240
ASTM A412 / ASME SA412
ASTM A193 Grade B8R
ASTM A194 Grade B8
AWS A5.9- ER209 Weld wire
UNS S20910
* Nitronic® is a registered trademark of AK Steel

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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.