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| Property | Value |
|---|---|
| UNS Number | S32760 |
| Standard | ASTM A182 / A479 |
| Tensile Strength | 750 MPa min |
| Yield Strength | 550 MPa min |
| Density | 7.85 g/cm³ |
| Max Service Temp | 300°C |
| Element | Composition (%) |
|---|---|
| Cr | 24.0–26.0 |
| Ni | 6.0–8.0 |
| Mo | 3.0–4.0 |
| W | 0.5–1.0 |
| Cu | 0.5–1.0 |
| N | 0.20–0.30 |
| C | ≤0.030 |
| Fe | bal |
Zeron 100 fasteners derive their exceptional properties from a carefully balanced super duplex composition containing high levels of chromium, nickel, molybdenum, copper and nitrogen. Chromium provides a stable passive oxide layer that resists oxidation and general corrosion, while molybdenum and nitrogen work together to enhance resistance to pitting and crevice corrosion in aggressive chloride-rich environments. The addition of copper further improves resistance to sulfuric acid attack, and the balanced austenite-ferrite microstructure ensures high strength combined with good toughness and ductility, making the alloy suitable for demanding fastening applications.
These alloying benefits translate into fasteners with outstanding mechanical strength, excellent resistance to stress corrosion cracking and superior performance in marine, offshore, chemical processing and desalination environments. Zeron 100 fasteners maintain structural integrity under high mechanical loads while resisting hydrogen embrittlement, making them ideal for critical bolting applications requiring long service life, reduced maintenance and reliable corrosion resistance in harsh, high-chloride or sour service conditions.
Specifications
Zeron 100 Fasteners are defined by precise dimensional specifications and balanced mechanical properties, with technical data covering strength, hardness, and fit requirements for demanding applications. Their performance profile supports reliable assembly and selection, guided by tolerances, dimensions, and applicable standards where relevant.
| Property | Value |
|---|---|
| Tensile Strength | 750 MPa min |
| Yield Strength | 550 MPa min |
| Elongation | 25% min |
| Hardness | 28 HRC max |
| Modulus of Elasticity | 205 GPa |
| Thermal Conductivity | 13 W/m·K |
| Density | 7.85 g/cm³ |
| Melting Range | 1350–1400°C |
| Max Service Temp | 300°C |
| Standard | Details |
|---|---|
| Bolt Standard | ASME B18.2.1 |
| Stud Bolt Standard | ASTM A182 / MSS SP-75 |
| Nut Standard | ASME B18.2.2 |
| Thread Form | UNC, UNF, Metric |
| Diameter Range | M6 – M100 / 1/4" – 4" |
| Length Range | 10mm – 500mm |
| Product Forms | Bolts, Studs, Nuts, Washers |
| Custom Sizes | Available on request |
| Inspection Standards | NACE MR0175 / EN 10204 3.1 |
Applications
