Exotic Alloys XM-19 Round Bar Overview
Zeon Exports supplies Exotic Alloy XM-19 (Nitronic 50, UNS S20910) round bars, a nitrogen-strengthened austenitic stainless steel with a PREN above 34, comparable to duplex 2205, and roughly double the yield strength of standard 316L.
Exotic Alloy XM-19 (Nitronic 50) Round Bar is machined into valve parts, pump components, chains, bolts and fittings for petrochemical and oil field equipment. Its chromium, nickel, manganese, molybdenum and nitrogen composition gives excellent corrosion resistance that outperforms 316L and 317L in many media, combined with roughly double the yield strength of standard austenitic grades.
- PREN >34, on par with duplex 2205, exceeding standard 300-series grades
- Tensile ≥862 MPa, yield ≥379 MPa in the annealed condition
- EN 10204 3.1 certified, export-ready worldwide
Quick Specifications of Exotic Alloys XM-19 Round Bar
Exotic Alloy XM-19 (Nitronic 50) Round Bar is produced to internationally recognized bar specifications.
| Field | Detail |
|---|---|
| Material/Grade | Exotic Alloy XM-19 (Nitronic 50) |
| UNS | S20910 |
| DIN/Werkstoff Number | 1.3964 |
| Standards | ASTM A276, ASTM A479, AMS 5764 |
| Form | Round Bar |
| Finish | Hot rolled, turned, ground (as specified) |
| Heat Treatment | Solution Annealed |
| Certification | EN 10204 3.1 |
Equivalent Grades of XM-19
Alloy XM-19 (Nitronic 50) is recognized under several international designations below.
| UNS | DIN/Werkstoff Number | Common Trade Name | ASTM/ASME Standard |
|---|---|---|---|
| S20910 | 1.3964 | Nitronic 50 / XM-19 / 22-13-5 | ASTM A276 / A479 |
Chemical Composition of XM-19
Composition per ASTM A276/A479 for UNS S20910; exact limits can vary slightly by specification and heat.
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 20.5 – 23.5 |
| Nickel (Ni) | 11.5 – 13.5 |
| Manganese (Mn) | 4.0 – 6.0 |
| Molybdenum (Mo) | 1.50 – 3.00 |
| Nitrogen (N) | 0.20 – 0.40 |
| Niobium (Nb) | 0.10 – 0.30 |
| Vanadium (V) | 0.10 – 0.30 |
| Carbon (C), max | 0.06 |
| Silicon (Si), max | 1.00 |
| Iron (Fe) | Balance |
Physical Properties of Exotic Alloy XM-19 (Nitronic 50)
Typical physical properties for XM-19; confirm exact heat-specific figures against the mill test certificate.
| Property | Value |
|---|---|
| Density | ~7.9 g/cm3 (typical) |
| Melting Range | Confirm against applicable datasheet |
| Magnetic Behaviour | Non-magnetic (does not magnetize with cold work) |
Mechanical Properties of Exotic Alloys XM-19 Round Bar
Minimum mechanical properties for annealed UNS S20910 per ASTM A276/A479.
| Property | Minimum Value |
|---|---|
| Tensile Strength | 862 MPa (125 ksi) |
| Yield Strength (0.2% offset) | 379 MPa (55 ksi) |
| Elongation | 35% |
| Condition | Solution Annealed |
Corrosion Resistance of Exotic Alloy XM-19 (Nitronic 50)
- Exotic Alloy XM-19 Round Bar offers a corrosion profile that outperforms standard austenitic stainless in most media.
- General corrosion resistance: outperforms 316(L) and 317(L) across many chemical environments.
- Pitting and crevice resistance: PREN above 34, comparable to duplex 2205, giving better resistance than 316(L).
- Chloride SCC caution: not recommended for hot chloride ion environments, where it can be susceptible to stress corrosion cracking.
Heat Resistance of Exotic Alloy XM-19 (Nitronic 50)
Exotic Alloy XM-19 round bar retains very good mechanical properties at both elevated and sub-zero temperatures. It cannot be hardened by heat treatment; strength is developed through solution annealing and, where higher strength is needed, controlled hot working. Confirm exact service limits against the governing standard and application before specifying.
Key Properties of Exotic Alloys XM-19 Round Bar
Beyond corrosion and heat performance, XM-19 round bar offers these additional properties.
- Roughly double the yield strength of standard 300-series stainless
- Excellent mechanical properties at cryogenic temperatures
- NACE MR0175 qualified for sulfide stress cracking resistance
- Cannot be hardened by heat treatment; strengthened via annealing or hot working
Benefits of Exotic Alloys XM-19 Round Bar
Choosing XM-19 round bar from Zeon Exports delivers measurable advantages for your project.
- Duplex-level pitting resistance with austenitic fabricability
- Full MTC 3.1 documentation for project QA/QC requirements
- Multiple sizes and finishes to match exact project specs
- Reliable bulk supply with consistent ready stock
- Competitive export pricing for large industrial orders
- Fast dispatch to global project sites and ports
Related Products
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Request a Quote for Exotic Alloys XM-19 Round Bar
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Frequently Asked Questions About Exotic Alloys XM-19 Round Bar
Common questions about Exotic Alloy XM-19 (Nitronic 50) Round Bar, answered below.
Q1: What is Exotic Alloy XM-19 (Nitronic 50)?
Ans. XM-19 (UNS S20910) is a nitrogen-strengthened austenitic stainless steel with a PREN above 34.
Q2: What standards apply to XM-19 round bar?
Ans. Round bar is manufactured to ASTM A276/A479, certified to EN 10204 3.1 mill test certificates.
Q3: Is XM-19 magnetic?
Ans. No, XM-19 is non-magnetic and, unlike many austenitic grades, does not become magnetic when cold formed.
Q4: How does XM-19 compare to 316L?
Ans. XM-19 has roughly double the yield strength and better pitting and crevice resistance than 316L across many chemical environments.
Q5: Is XM-19 suitable for sour-gas service?
Ans. Yes, XM-19 is qualified under NACE MR0175 for sulfide stress cracking resistance in oil field equipment.
Q6: Is XM-19 suitable for hot chloride service?
Ans. No, like other austenitic grades, XM-19 can be susceptible to stress corrosion cracking in hot chloride ion environments.
Q7: What certification is provided with orders?
Ans. Every order ships with EN 10204 3.1 mill test certificates confirming grade, heat and dimensions.
Q8: Does Zeon Exports supply custom sizes?
Ans. Yes, round bars are available cut-to-size and in custom dimensions on request for bulk industrial orders.
