| Material |
Hastelloy C276 (Nickel-Molybdenum-Chromium Wrought Alloy) |
| Standard / Classification |
UNS N10276 | DIN 2.4819
- Density: 8.89 g/cm³
- Melting Point: 1370°C (2500°F)
|
| Chemical Composition (%) |
Ni: Balance | Mo: 15.0 - 17.0 | Cr: 14.5 - 16.5 | Fe: 4.0 - 7.0 | W: 3.0 - 4.5 | C: 0.01 Max | Mn: 1.0 Max | V: 0.35 Max |
| Manufacturing Specification |
Washers are typically stamped or machined from Hastelloy C276 plate/sheet (ASTM B575) or rod (ASTM B574). Dimensional tolerances strictly follow DIN 125, DIN 9021, or ASME B18.22.1. |
| Types Available |
Flat Washers (Form A / Form B), Spring Lock Washers, Belleville Washers, Machined Washers, and Custom Punched Washers. |
| Properties & Applications |
Essential for distributing load evenly across fastener joints in highly corrosive environments. Provides a vital secondary degree of resistance against galling and galvanic corrosion in chemical processing equipment, scrubbers, and reactors. |
| Marking |
Due to size constraints, flat washers are generally not permanently marked unless specifically requested by the client or required by a custom specification. |
| Qualification & Acceptance |
Independently tested for hardness, chemical analysis, pitting resistance, and supplied with EN 10204 Type 3.1 Material Test Certification. |