- Equivalent Grades:
- UNS: N08367
- EN/DIN: 4501
- China GB: 00Cr21Ni24Mo6N 12
- Material Composition:
| Element | Ni | Cr | Mo | N | Fe | |
| % Range | 23.5–25.5% | 20.0–22.0% | 6.0–7.0% | 0.18–0.25% | Bal. | 14 |
Material Properties
- Corrosion Resistance:
- Exceptional resistance to chlorides, sulfuric acid, and seawater, outperforming 300-series stainless steels 24.
- Superior resistance to pitting, crevice corrosion, and stress corrosion cracking (SCC) in harsh environments like marine and chemical processing 13.
- Mechanical Strength:
- Tensile strength: ≥650 MPa
- Yield strength: ≥310 MPa
- Elongation: ≥30% 48.
- Physical Properties:
- Density: 24 g/cm³
- Melting range: 1320–1400°C
- Thermal expansion coefficient: 2 × 10⁻⁶/°C (100–500°C) 4.
Standards & Certifications
- ASTM: B688 (plate, sheet, strip)
- DIN: 1.4501
- ISO: 4032 (hex nuts), 7040 (flange nuts)
- ANSI/ASME: B18.2.2 (metric nuts) 56.
Types of Nuts Produced with AL6XN
- Hex nuts (DIN 934, ISO 4032)
- Flange nuts (ISO 7040)
- Lock nuts (DIN 985)
- Coupling nuts (ANSI B18.2.2)
- Customizable threads: UNC, UNF, metric 56.
Applications Across Industries
- Marine & Offshore:
- Fasteners for seawater-cooled condensers, offshore platforms, and shipbuilding 28.
- Chemical & Petrochemical:
- Reactors, pipelines, and valves handling chlorinated solvents or sulfuric acid 14.
- Energy & Power Generation:
- Flue gas desulfurization (FGD) systems, nuclear reactor coolant pipelines 48.
- Pharmaceutical & Food Processing:
- Hygienic fasteners resistant to sterilization chemicals and acidic cleaning agents 48.
AL6XN nuts
- UNS N08367 fasteners
- Super austenitic stainless steel nuts
- DIN 1.4501 nuts
- High-molybdenum corrosion-resistant nuts
- Marine-grade stainless steel nuts
- ASTM B688 hex nuts
- Chemical industry fasteners
- AL6XN Nuts: Grades & Applications”).
- Learn about AL6XN tubing for chemical plants”).
- AL6XN Hex Nuts in Offshore Platform Assembly”.
