Nitronic 50 Round Bar: Properties, Specifications and Industrial Buying Guide
Nitronic 50 Round Bar Nitronic 50 is a high-performance nitrogen-strengthened austenitic stainless steel developed for applications requiring a combination of high strength, corrosion resistance and good mechanical performance. Also known as UNS S20910 and XM-19, this alloy is used in marine equipment, chemical processing, industrial machinery and specialised engineering components.
Nitronic 50 round bars are particularly useful for manufacturing shafts, fasteners, pins, pump components and other precision-engineered parts where conventional stainless steel grades may not provide the required combination of strength and corrosion resistance.
For buyers and procurement professionals, understanding Nitronic 50 properties, specifications, product forms and material requirements is essential before placing an order.
What Is Nitronic 50 Stainless Steel?
Nitronic 50 is a nitrogen-strengthened austenitic stainless steel. Its alloy composition includes chromium, nickel, manganese, molybdenum and nitrogen, which contribute to its strength and corrosion-resistant characteristics.
The material is commonly identified by the following designations:
- Nitronic 50
- UNS S20910
- XM-19
It is selected for engineering applications that require higher strength than many conventional austenitic stainless steels, together with useful corrosion resistance.
The actual properties depend on the product form, manufacturing route, dimensions and supplied condition.
Nitronic 50 Round Bar Properties
Nitronic 50 round bars are used in applications where strength, corrosion resistance and component reliability are important.
Important characteristics include:
- High strength compared with many conventional austenitic stainless steel grades
- Good general corrosion resistance
- Useful resistance to pitting and crevice corrosion in suitable environments
- Good toughness
- Nitrogen-strengthened austenitic structure
- Non-magnetic or low-magnetic behaviour in many supplied conditions, subject to processing and cold work
- Suitability for selected marine and industrial engineering applications
Material selection should always consider the actual operating environment, temperature, loading and applicable specification.
Chemical Composition of Nitronic 50
The chemical composition of Nitronic 50 is designed to provide its combination of strength and corrosion resistance.
The following are commonly referenced composition ranges. Confirm the applicable standard and product specification before using these figures for material acceptance.
| Element | Commonly referenced composition range |
|---|---|
| Chromium (Cr) | 20.5–23.5% |
| Nickel (Ni) | 11.5–13.5% |
| Manganese (Mn) | 4.0–6.0% |
| Molybdenum (Mo) | 1.5–3.0% |
| Nitrogen (N) | 0.20–0.40% |
| Silicon (Si) | 1.0% maximum |
| Carbon (C) | 0.06% maximum |
| Phosphorus (P) | 0.04% maximum |
| Sulphur (S) | 0.03% maximum |
| Iron (Fe) | Balance |
Why Is Nitrogen Important in Nitronic 50?
Nitrogen is an important alloying element in Nitronic 50. It contributes to strengthening the austenitic stainless steel structure and helps improve mechanical performance.
The combination of nitrogen, chromium, nickel and molybdenum helps make Nitronic 50 suitable for demanding engineering environments.
Mechanical Properties of Nitronic 50
Nitronic 50 is known for its relatively high strength among austenitic stainless steels.
Its mechanical properties depend on the product form, heat treatment, cold working, dimensions and governing material specification.
Important properties considered during material selection include:
- Tensile strength
- Yield strength
- Elongation
- Hardness
- Impact toughness, where specified
- Corrosion performance in the intended environment
Buyers should not assume that every Nitronic 50 round bar has identical mechanical properties. The required condition and test values should be specified in the purchase order and verified through the material test certificate.
Corrosion Resistance of Nitronic 50
Corrosion resistance is one of the important reasons Nitronic 50 is selected for specialised industrial applications.
Its chromium content supports the formation of a passive protective surface film, while molybdenum and nitrogen contribute to resistance against certain forms of localised corrosion.
Nitronic 50 may be considered for applications involving:
- Marine atmospheres
- Selected seawater-related equipment
- Industrial processing environments
- Chemical-handling components
- Pumps, valves and mechanical assemblies
However, corrosion resistance depends on the concentration of chemicals, temperature, chloride levels, flow conditions, surface condition and mechanical stress.
No stainless steel grade should be assumed suitable for every corrosive environment without application-specific evaluation.
Nitronic 50 Applications
Nitronic 50 is used in different industries where a combination of strength and corrosion resistance is required.
1. Marine Engineering
Selected marine equipment, shafts, fasteners and mechanical components may use Nitronic 50 because of its useful strength and corrosion-related properties.
2. Chemical Processing
Nitronic 50 may be selected for certain chemical-processing components where the operating environment is compatible with the alloy.
3. Pump and Valve Manufacturing
The alloy is used in selected pump shafts, valve components, stems and other mechanical parts requiring strength and corrosion resistance.
4. Industrial Machinery
Nitronic 50 round bars can be machined into specialised engineering components, pins, connectors and high-strength parts.
5. Offshore and Specialised Engineering
Selected offshore and industrial equipment may use Nitronic 50 where its mechanical and corrosion properties meet the design requirements.
Nitronic 50 Round Bar Product Requirements
When purchasing Nitronic 50 round bars, buyers should clearly specify the required dimensions and material condition.
Important details include:
- Diameter
- Length
- Dimensional tolerance
- Surface finish
- Required material condition
- Applicable standard
- Testing and documentation requirements
- Required quantity
Nitronic 50 may also be required in other product forms, depending on the application and manufacturing route.
Standards and Specifications for Nitronic 50
Nitronic 50 is identified by UNS S20910. Product standards depend on the form being purchased and the applicable material requirements.
Commonly referenced specifications include:
- ASTM A276: Covers stainless steel bars and shapes, including applicable grades and requirements.
- ASTM A479/A479M: Covers stainless steel bars and shapes for use in boilers and other pressure vessels, including applicable grades.
- ASTM A240/A240M: Covers chromium and chromium-nickel stainless steel plate, sheet and strip for pressure vessels and general applications, where the relevant grade is covered.
Always confirm that the selected specification includes the required grade, product form, condition and dimensions. Do not assume that a bar specification automatically applies to plate or sheet.
For standards information, refer to ASTM International.
For additional technical information about stainless steels, consult British Stainless Steel Association and World Stainless.
Nitronic 50 vs Conventional Stainless Steel Selection
Nitronic 50 is considered when an application requires a combination of higher strength and corrosion resistance.
However, the correct grade should be selected based on engineering requirements rather than the alloy name alone.
Before selecting Nitronic 50, consider:
- Required tensile and yield strength
- Exposure to chlorides or other corrosive substances
- Operating temperature
- Component loading
- Machining and fabrication requirements
- Required material specification
- Inspection and documentation needs
The final selection should be approved against the component design and operating conditions.
Nitronic 50 Round Bar Buying Checklist
Before requesting a quotation, prepare the following information:
- Grade: Nitronic 50 / UNS S20910 / XM-19.
- Product form: Round bar or another required form.
- Diameter: Specify the required size in millimetres or inches.
- Length: Mention standard or cut lengths.
- Condition: State the required supplied condition.
- Specification: Confirm the applicable ASTM or other governing standard.
- Quantity: Specify the required number of pieces or total weight.
- Testing: Identify the required chemical and mechanical test reports.
- Documentation: Confirm material test certificate and traceability requirements.
- Application: Share the intended use and operating environment.
A complete enquiry helps the supplier evaluate the material requirement more accurately.
Nitronic 50 Round Bar Supplier in India – Manan Steel & Metals
Manan Steel & Metals supplies specialty metals and alloy materials for industrial and engineering requirements.
Buyers looking for Nitronic 50 can share their required grade, dimensions, product form, applicable specification and material condition for enquiry evaluation.
For related material requirements, explore our round bar product range and round bar weight chart.
For pricing and product enquiries, contact Manan Steel & Metals.
Frequently Asked Questions About Nitronic 50
1. What is Nitronic 50?
Nitronic 50 is a nitrogen-strengthened austenitic stainless steel known for its combination of high strength and corrosion resistance. Its UNS designation is S20910.
2. What is the equivalent designation of Nitronic 50?
Nitronic 50 is commonly identified by UNS S20910 and the designation XM-19.
3. Is Nitronic 50 corrosion resistant?
Yes. Nitronic 50 offers good corrosion resistance in many environments, including selected marine and industrial applications. Actual suitability depends on the specific operating conditions.
4. Is Nitronic 50 magnetic?
Nitronic 50 is generally considered non-magnetic or low-magnetic in many supplied conditions. However, cold working and processing can influence magnetic response.
5. Where is Nitronic 50 round bar used?
Nitronic 50 round bars are used for selected shafts, pins, fasteners, pump components, valve parts and specialised industrial machinery.
6. Which standards apply to Nitronic 50 round bars?
ASTM A276 and ASTM A479/A479M are commonly referenced bar specifications. Buyers should verify the exact grade coverage, product requirements and current standard before ordering.
7. What information is required to purchase Nitronic 50?
Buyers should provide the grade, diameter, length, quantity, applicable specification, material condition and required inspection documents.
Conclusion
Nitronic 50 is a specialised nitrogen-strengthened stainless steel used in engineering applications requiring a useful combination of strength, corrosion resistance and toughness.
Its UNS S20910 designation, chemical composition, mechanical properties and applicable product specifications should be carefully verified before procurement.
For industrial buyers, selecting the correct product form, dimensions and material condition is essential for meeting project requirements.
Contact Manan Steel & Metals for your Nitronic 50 material enquiries.
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