Updates
Products
Currently it only shows your basic business info. Start adding relevant business details such as description, images and products or services to gain your customers attention by using Boost 360 android app / iOS App / web portal.
NITRONIC 50 Stainless Steel provides a combination of corrosion resistance and strength not found in any other commercial material available in its price range. This austenitic stainless has corrosion resistance greater than that provided by Types 316 and 316L, plus approximately twice the yield strength at room temperature. In addition, Armco NITRONIC 50 Stainless has very good mechanical properties at both elevated and sub-zero temperatures. And, unlike many austenitic stainless steels, NITRONIC 50 does not become magnetic when cold worked.
High Performance Alloys can make hot rolled, cold worked, strain hardened High Performance Stainless Steel (HPSS) bars in house. Ask for our GFM Bulletin for more information about our bar processing capabilities. We have expanded to enhance product availability.
Compared withAlloy 316L, Nitronic 50 contains increased chromium and molybdenum additions which support the improved corrosion resistance. Whilst Alloy 316L would have a Pitting Resistance Equivalent Number (PREN) of 25, the of Nitronic 50 is 34.
Super duplex stainless steels attain a PREN >40, but with different mechanical properties. This is the main reason why Nitronic 50 would be specified instead of super duplex alloys. It is listed in NACE MR 0175 for sour service applications given its ability to resist supplied stress cracking.
In order to maintain the favorable mechanical properties of austenitic stainless steel, such as ductility and toughness at both elevated and cryogenic temperatures, plus ease of welding and fabrication, a significant increase in the nickel content is required.
Nitronic 50® stainless steel is an austenitic stainless steel with a blend of strength and corrosion resistance that is higher than stainless steel grades 316, 316/316L, 317, and 317/317L .
The high strength, corrosion resistance, and low magnetic permeability of this alloy allows it to be used as a material for medical implants.
Without this nickel addition, the microstructure would tend towards a duplex product, with even higher strengths but lower ductility and toughness. However, this does mean that Nitronic 50 is a more expensive alloy than duplex and super duplex stainless steels.
Like some duplex stainless steels, it also uses an increased nitrogen content to improve its strength, so is sometimes referred to as a nitrogen-strengthened alloy. Additions of manganese also push up the strength through solid solution strengthening.
Among the myriad of stainless steel alloys available in the market, Nitronic® 50 stands out as a true marvel, offering a unique blend of corrosion resistance and strength that is unparalleled in its price range. As an austenitic stainless steel, Nitronic 50 sets itself apart by providing superior corrosion resistance compared to renowned grades like Types 316, 316L, 317, and 317L. Furthermore, it boasts an astounding yield strength at room temperature, approximately twice that of these comparable materials.
What sets Nitronic 50 apart from many other austenitic stainless steels is its impressive retention of excellent mechanical properties in both elevated and sub-zero temperatures, ensuring reliability across a wide range of environments. Moreover, a remarkable quality of this alloy is its immunity to magnetic transformation when cold worked or cooled to sub-zero temperatures, setting it apart from the conventional behavior of other stainless steels. For applications demanding even greater strength, the High Strength (HS) Nitronic 50 variant takes it a step further, exhibiting a yield strength greater than that of Type 316 Stainless Steel.
Note that the specifications listed are common for this alloy but are for reference only and may be specific to a certain form. The specifications listed are not comprehensive nor indicative of any edition, revision, or similar such as an amendment. Please, reach out to our sales department to request the Material Test Report (MTR) or to confirm your required specifications.
Form | Standard Specification |
Identification | UNS S20910, XM-19, 22-13-5, W. Nr. 1.3964 |
Bar | AMS 5764, ASTM A276, ASME SA276 |
Cold Worked Bar | |
Wire Coil | ASTM A580 |
Sheet, Plate, or Strip | ASTM A240, ASME SA240 |
Boilers and Pressure Vessels | ASTM A479, ASME SA479 |
Fasteners | ASTM A193 Grade B8R Class 1C, ASTM A194 |
Forging | AMS 5764, ASTM A314, ASME SA314 |
Weld Wire | N50W/ UNS S20980/ AWS A5.9 Class ER209 |
Billet | ASTM A314 |
Medical | ASTM F899 |
Others | NACE MR-0175, ISO 15156 |
Here is how N50 High-Strength (HS) shafting and Alloy 400 (Ni-Cu) looked after 18 months exposure in quiet seawater off the coast of North Carolina. The test was conducted without zinc anodes to establish the relative corrosion resistance of N50 High-Strength (HS) shafting. Had zinc anodes been used or a bronze propeller fitted to these bars, no crevice corrosion should have occurred. The photograph was taken after barnacles and other forms of marine life were cleared from the test bars.
Before exposure, all specimens were polished to 120 grit finish, degreased, and passivated. They were then clamped into pepper wood racks and exposed fully immersed in seawater. N50 High-Strength (HS) shafting showed no crevice attack under the wooden blocks after the 18 months. One bar of N50 High-Strength (HS) shafting remained perfect, while the other showed a few areas of very light crevice attack, < .001 " (0.025 mm) deep under marine attachments. Both samples of Alloy 400 suffered shallow crevice attack .001 "-.003" (0.025-0.076 mm) deep under the area in contact with the wooden rack, and also under numerous attached barnacles.
As we Nitronic 50 is a member of the Nitronic family of alloys. This alloy is also widely referred to as XM19, which is the designation of the generic alloy caption in ASTM A276 and ASTM A479, as well as UNS S20910 or DIN 1.3964.
This alloy is available in two conditions. The first condition is simply solution annealed, which is easier to machine form. However, most Vandan Alloys customers specify the higher-strength version, which is offered in the hot rolled or strain-hardened condition dependent upon the diameter.
The larger diameters can attain higher strength whilst still falling below the maximum hardness level (HRC<35) specified in NACE through hot rolling – using lower than normal rolling temperatures to influence the microstructure. For smaller diameters, we have found that the strain hardened condition achieves more consistent properties and lower through-bar hardness.
Langley Alloys’ Fermonic 50 is not just an alternative trademark – it is, in fact, a completely different Nitronic.
Vandan Alloys
Seamless Steel Pipe | ERW Steel Pipe | Fasteners | Plate | Fittings | Flanges
3/5, Sakar Bhavan, Ground Floor, 6th Khetwadi lane, SVP Road , Mumbai – 400 004. India
TEL +91 022 6610 9925 Mobile no: 9892882255
Email: info@vandanalloys.com
Web: www.vandanalloys.com Web: www.vandanfasteners.com
Web: www.vandanflanges.com
