What is Nitronic 50 (XM 19) Bars?
Nitronic 50, also known as XM-19, is a high-strength austenitic stainless steel alloy that exhibits excellent corrosion resistance, high strength, and good mechanical properties even at elevated temperatures. It falls under the category of nitrogen-strengthened austenitic stainless steels and is popularly used in various industrial applications due to its outstanding combination of properties.
Table Of Content
Corrosion Resistance: Nitronic 50 offers exceptional resistance to corrosion in various environments, including chloride solutions, making it suitable for applications in marine and chemical industries.
High Strength: It possesses significantly higher strength compared to standard austenitic stainless steels, making it suitable for applications requiring robust mechanical properties.
Excellent Ductility: Despite its high strength, Nitronic 50 maintains good ductility, allowing for ease of fabrication and forming processes.
Good Weldability: This alloy exhibits good weldability, enabling it to be welded using conventional methods without significant risk of degradation in properties.
Low Magnetic Permeability: Nitronic 50 has low magnetic permeability, making it suitable for applications where magnetic interference needs to be minimized.
Sizes of Nitronic 50 (XM 19) Bars:Nitronic 50 bars are available in various sizes and forms to suit different application requirements. Commonly, they are supplied in round bar form with diameters ranging from small sizes like 6mm to larger diameters exceeding 100mm. The length of bars typically varies based on customer preferences and manufacturing capabilities.
Specifications | ASTM A276, ASTM A479 |
Dimension Standard | EN, DIN, JIS, ASTM, BS, ASME, AISI |
Bar Diameter | 3 ~ 800mm |
Hex Bar size | 2-100mm A/F |
Flat bar size | Thickness: 2 -100mm. Width: 10 to 500mm. |
Square bar size | 4 to 100mm |
Rectangular Bars | Size: 33 x 30mm to 295 x 1066mm. Thickness: 3.0 to 12.0mm. |
Hollow Bars | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
Billet Size | 1/2 to 495mm Diameter |
Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients requirements |
Bar Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
Rolled Bars Condition | Hardened & tempered, annealed |
Cold Rolled Bar Technique | Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
Form | Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
Melting
The first step in the process is melting raw materials in an electric furnace. These raw materials are typically iron ore, chromium, nickel, and other elements in exact amounts.
Hot Rolling
After being heated, the billets are shaped into long, thin rods by going through a series of rolling mills. Because the metal is heated above its recrystallization temperature during this operation, it is known as hot rolling.
Pickling
The pickling process is used to the bars in order to eliminate any oxide, scale, or other surface contaminants. Usually, an acid solution is used for this.
Cutting
Lastly, shearing machines or other cutting techniques are used to cut the rods to the required length.
STANDARD | UNS | WNR. |
Nitronic 50 - XM 19 | UNS S20910 | - |
Nitronic 50 primarily consists of elements such as chromium, nickel, manganese, nitrogen, and molybdenum. The typical composition ranges are approximately 20-23% chromium, 11-13% nickel, 4-6% manganese, 0.1-0.3% nitrogen, and 1.5-3% molybdenum, with small additions of elements like silicon and carbon to refine its properties.
Grade | C | Mn | Si | P | S | Cr | Ni |
Nitronic 50 - XM 1 | 0.06 max | 6.0 max | 1.0 max | 0.040 max | 0.030 max | 23.50 max | 13.50 max |
Grade | Yeild Strength | Tensile Strength | Elongation | Rockwell Hardness |
Nitronic 50 - XM 19 | 345 Mpa | 655 Mpa | 35% | 293 HB |
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Marine Industry: Due to its excellent corrosion resistance, Nitronic 50 bars find extensive use in marine applications such as marine shafts, propellers, and fittings exposed to seawater environments.
Chemical Processing: The alloy's resistance to corrosion in acidic and chloride-containing environments makes it suitable for components in chemical processing equipment, including valves, pumps, and fittings.
Aerospace : Nitronic 50 is utilized in aerospace applications, particularly in critical components where high strength and corrosion resistance are required, such as fasteners and landing gear components.
Petrochemical Industry: It is employed in various petrochemical applications, including piping systems, heat exchangers, and fittings, where resistance to corrosion and high temperatures is essential.
Medical Devices: The alloy's biocompatibility, along with its strength and corrosion resistance, makes it suitable for use in medical devices and surgical instruments.
Nitronic 50 bars are versatile materials offering a unique combination of properties suitable for diverse industrial applications, ranging from aggressive marine environments to demanding aerospace and medical applications.
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