Product Description
AL-6XN (UNS designation N08367) is a super-austenitic stainless steel engineered for extreme corrosion resistance, particularly in chloride-heavy, acidic, and marine environments. Containing high levels of nickel (~24%), chromium (~21%), molybdenum (~6.5%), and nitrogen (~0.2%), it bridges the gap between standard 300-series stainless steels (like 316L) and higher-cost nickel-base alloys (such as Alloy C-276).
Chemical Composition (UNS N08367)
Values are expressed in weight percentage (wt %) according to ASTM / ASME material standards:
| Element | Symbol | Min (%) | Max (%) | Nominal / Target |
| Nickel | Ni | 23.50 | 25.50 | 24.50 % |
| Chromium | Cr | 20.00 | 22.00 | 21.00 % |
| Molybdenum | Mo | 6.00 | 7.00 | 6.50 % |
| Nitrogen | N | 0.18 | 0.25 | 0.22 % |
| Copper | Cu | | 0.75 | < 0.75 % |
| Carbon | C | | 0.030 | Low carbon grade |
| Manganese | Mn | | 2.00 | < 2.00 % |
| Silicon | Si | | 1.00 | < 1.00 % |
| Phosphorus | P | | 0.040 | < 0.040 % |
| Sulfur | S | | 0.030 | < 0.030 % |
| Iron | Fe | Balance | Balance | ~41.0 46.0 % |
Physical Properties
| Property | Metric Value | Imperial Value |
| Density | 8.06 g/cm | 0.291 lb/in |
| Melting Range | 1320 C 1400 C | 2410 F 2550 F |
| Modulus of Elasticity | 195 GPa | 28.3 10 psi |
| Electrical Resistivity | 0.89 m | 535 Ohmcirc mil/ft |
| Thermal Conductivity | 14.1 W/mK | 7.5 Btu/hrftF |
| Specific Heat Capacity | 500 J/kgK | 0.11 Btu/lbF |
| PREN (Pitting Resistance Equivalent) | 44 | 44 |
Mechanical Properties (Annealed Plate)
| Mechanical Property | Minimum Specified (ASME SB-688) | Typical Test Values |
| Ultimate Tensile Strength (UTS) | 95 ksi (655 MPa) | 108 ksi (745 MPa) |
| Yield Strength (0.2% Offset) | 45 ksi (310 MPa) | 53 ksi (365 MPa) |
| Elongation in 2 in. (50 mm) | 30 % | 47 % |
| Hardness (Maximum) | 30.5 HRC / 210 HB | ~190 HB |
Exceptional Corrosion ResistanceAL6XN scrap stands out for its remarkable resistance to pitting and crevice corrosion, even in aggressive chemical and marine environments. The unique composition that includes high molybdenum and nitrogen content ensures long-lasting performance where conventional stainless steels may fail, making it a preferred choice for critical industrial applications.
Versatile Industrial ApplicationsThanks to its robust mechanical and chemical properties, AL6XN alloy scrap finds usage in sectors like chemical processing, marine engineering, and petrochemical industries. Its strong, non-magnetic structure, along with customisable length, thickness, and shape, makes it highly adaptable for varied fabrication and recycling needs.
FAQ's of AL6XN Scrap / AL6XN Alloy Scrap / UNS N08367 Scrap / AL6XN:
Q: How is AL6XN scrap typically processed for reuse or recycling?
A: AL6XN scrap is collected, sorted by composition and condition, then cleaned and processed (often via melting or forging) to be reused in fabricating industrial components. Its high purity (>99%) ensures excellent recyclability without compromising quality.
Q: What industries commonly use AL6XN alloy scrap and why?
A: Industries involved in chemical processing, marine, and petrochemical operations choose AL6XN scrap due to its superior corrosion resistance, strength, and non-magnetic properties, ensuring long service life in hostile environments.
Q: When should AL6XN scrap be selected over other stainless steel alloys?
A: AL6XN scrap is preferred when exceptional resistance to pitting and crevice corrosion is required-such as in process equipment exposed to chlorides or aggressive chemicals-where typical alloys may degrade rapidly.
Q: Where is AL6XN scrap sourced and distributed in India?
A: AL6XN scrap is provided by dealers, exporters, fabricators, manufacturers, producers, retailers, suppliers, and traders across India, ensuring widespread availability to various industrial sectors.
Q: What are the benefits of using AL6XN scrap in manufacturing or fabrication?
A: Utilizing AL6XN scrap provides manufacturers with cost-effective, high-grade raw material exhibiting excellent durability, corrosion resistance, and strong mechanical properties, thereby reducing operational costs and extending component service life.
Q: What forms and surface finishes are available for AL6XN alloy scrap?
A: AL6XN scrap can be obtained as solid bars, round pieces, or irregular shapes, featuring surfaces with a mill finish or as-is condition. Custom lengths and thicknesses can be supplied based on fabrication requirements.