Exotic Alloys Alloy 218 Structural Profiles Overview
Zeon Exports supplies Exotic Alloy 218 (Nitronic 60, UNS S21800) structural profiles – angles, channels and beams – a nitrogen and manganese-strengthened austenitic stainless steel with outstanding resistance to galling, wear and fretting.
Exotic Alloy 218 (Nitronic 60) Structural Profiles form load-bearing frames for oil field, petrochemical and food & drug facilities where wear resistance matters. Its elevated silicon and manganese content inhibits wear, galling and fretting even in the annealed condition, with strength roughly double that of Type 304.
- Outstanding galling resistance versus standard austenitic stainless
- Tensile ≥655 MPa, yield ≥345 MPa in the annealed condition
- EN 10204 3.1 certified, export-ready worldwide
Quick Specifications of Exotic Alloys Alloy 218 Structural Profiles
Exotic Alloy 218 (Nitronic 60) Structural Profiles are produced to internationally recognized specifications.
| Field | Detail |
|---|---|
| Material/Grade | Exotic Alloy 218 (Nitronic 60) |
| UNS | S21800 |
| DIN/Werkstoff Number | 1.4565 |
| Standards | ASTM A276, ASTM A479, AMS 5848 |
| Form | Angles, Channels, Beams |
| Finish | Hot rolled, ground |
| Heat Treatment | Solution Annealed |
| Certification | EN 10204 3.1 |
Equivalent Grades of Alloy 218
Alloy 218 (Nitronic 60) is recognized under several international designations below.
| UNS | DIN/Werkstoff Number | Common Trade Name | ASTM/ASME Standard |
|---|---|---|---|
| S21800 | 1.4565 | Nitronic 60 / Alloy 218 | ASTM A276 / A479 |
Chemical Composition of Alloy 218
Composition per ASTM A276/A479 for UNS S21800; exact limits can vary slightly by specification and heat.
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 9.0 |
| Manganese (Mn) | 7.0 – 9.0 |
| Silicon (Si) | 3.5 – 4.5 |
| Nitrogen (N) | 0.08 – 0.18 |
| Iron (Fe) | Balance |
Physical Properties of Exotic Alloy 218 (Nitronic 60)
Physical properties for Nitronic 60, confirmed against manufacturer data.
| Property | Value |
|---|---|
| Density | 7.62 g/cm3 |
| Magnetic Behaviour | Essentially non-magnetic |
Mechanical Properties of Exotic Alloys Alloy 218 Structural Profiles
Minimum mechanical properties for annealed UNS S21800 per ASTM A276/A479.
| Property | Minimum Value |
|---|---|
| Tensile Strength | 655 MPa (95 ksi) |
| Yield Strength (0.2% offset) | 345 MPa (50 ksi) |
| Elongation | 35% |
| Condition | Solution Annealed |
Corrosion Resistance of Exotic Alloy 218 (Nitronic 60)
- Exotic Alloy 218 Structural Profiles are chosen more for wear and galling resistance than for general corrosion resistance.
- General corrosion resistance: performs between Type 304 and Type 316 stainless steel.
- Galling and wear resistance: elevated silicon and manganese give outstanding resistance to seizing in self-mated or dissimilar metal contacts.
Heat Resistance of Exotic Alloy 218 (Nitronic 60)
Exotic Alloy 218 structural profiles retain good mechanical properties at elevated temperatures up to roughly 982°C (1,800°F) intermittent exposure, with oxidation resistance similar to Type 309 stainless steel. Confirm exact service limits against the governing standard and application before specifying.
Key Properties of Exotic Alloys Alloy 218 Structural Profiles
Beyond corrosion and heat performance, Nitronic 60 profiles offer these additional properties.
- Outstanding resistance to galling, wear and fretting
- Good low-temperature impact properties
- High shear strength and excellent cavitation erosion resistance
- Strength can be increased further through cold working
Benefits of Exotic Alloys Alloy 218 Structural Profiles
Choosing Nitronic 60 profiles from Zeon Exports delivers measurable advantages for your project.
- Eliminates galling failures common with standard stainless steels
- Full MTC 3.1 documentation for project QA/QC requirements
- Multiple profile shapes and sizes to match 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
Explore related Exotic Alloys products from Zeon Exports.
Request a Quote for Exotic Alloys Alloy 218 Structural Profiles
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Call: +91 98205 33105
Email: info@zeonexports.com
Website: www.zeonexports.com
Address: A-7/9, Saboo Building, Ardeshir Dady Cross Lane, Cawasji Patel Tank Road, Mumbai – 400004
Frequently Asked Questions About Exotic Alloys Alloy 218 Structural Profiles
Common questions about Exotic Alloy 218 (Nitronic 60) Structural Profiles, answered below.
Q1: What is Exotic Alloy 218 (Nitronic 60)?
Ans. Nitronic 60 (UNS S21800) is a nitrogen and manganese-strengthened austenitic stainless steel developed for galling and wear resistance.
Q2: Which profile shapes are available in Nitronic 60?
Ans. We supply angles, channels and beams across standard structural sizes.
Q3: Is Nitronic 60 resistant to galling?
Ans. Yes, elevated silicon and manganese give outstanding resistance to galling, wear and fretting.
Q4: Is Nitronic 60 magnetic?
Ans. Nitronic 60 is essentially non-magnetic, being an austenitic stainless steel.
Q5: Can Nitronic 60 be hardened by heat treatment?
Ans. No, higher strength is achieved only through cold working, not heat treatment.
Q6: What certification is provided with orders?
Ans. Every order ships with EN 10204 3.1 mill test certificates confirming grade, heat and dimensions.
Q7: Does Zeon Exports supply custom profile sizes?
Ans. Yes, profiles are available cut-to-size and in custom dimensions on request for bulk industrial orders.
Q8: Where is Nitronic 60 typically used in structures?
Ans. It is used where guide rails, wear plates and structural components face sliding contact and galling risk.
