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| Specification | Value |
|---|---|
| UNS Number | N10276 |
| ASTM/ASME Standard | ASTM B574 / ASME SB574 |
| Tensile Strength | 760 MPa min |
| Yield Strength | 355 MPa min |
| Density | 8.89 g/cm³ |
| Max Service Temperature | 1093°C |
| Element | Composition (%) |
|---|---|
| Ni | bal |
| Cr | 14.5–16.5 |
| Mo | 15.0–17.0 |
| W | 3.0–4.5 |
| Fe | 4.0–7.0 |
| Co | ≤2.5 |
| Mn | ≤1.0 |
| C | ≤0.01 |
Hastelloy C276 fasteners derive their exceptional performance from a carefully balanced composition of nickel, molybdenum and chromium, supplemented by tungsten. Molybdenum and tungsten work synergistically to enhance resistance to pitting and crevice corrosion in reducing environments, while chromium provides protection against oxidizing media. The extremely low carbon and silicon content minimizes carbide precipitation at grain boundaries, preserving corrosion resistance even after welding or thermal exposure. This unique alloying strategy allows the material to perform reliably across a wide spectrum of aggressive chemical conditions.
These metallurgical characteristics translate into outstanding engineering benefits for fastener applications. Hastelloy C276 fasteners exhibit excellent resistance to chlorides, sulfuric and hydrochloric acids, and other highly corrosive process chemicals, making them ideal for demanding industries such as chemical processing, marine engineering and pollution control. Their high tensile strength, ductility and resistance to stress corrosion cracking ensure long-term mechanical reliability under extreme temperature and pressure. Combined with excellent weldability and thermal stability, C276 fasteners deliver superior durability, reduced maintenance costs and dependable service life in the harshest operating environments.
Specifications
Hastelloy C276 Fasteners are corrosion-resistant alloy components defined by precise mechanical properties and dimensional specifications, with technical data covering strength, hardness, size ranges, and tolerance control for demanding service in chemical processing and high-temperature environments, while meeting applicable industry standards for reliable fit in critical assemblies.
| Property | Value |
|---|---|
| Tensile Strength | 760 MPa min |
| Yield Strength (0.2% Offset) | 355 MPa min |
| Elongation | 40% min |
| Hardness | 90 HRB max |
| Modulus of Elasticity | 205 GPa |
| Thermal Conductivity | 10.2 W/m·K |
| Density | 8.89 g/cm³ |
| Melting Range | 1325–1370°C |
| Max Service Temperature | 1093°C |
| Parameter | Details |
|---|---|
| Bolt Standard | ASME B18.2.1, DIN 931/933 |
| Stud Bolt Standard | ASME B16.5, MSS SP-75 |
| Nut Standard | ASME B18.2.2, DIN 934 |
| Washer Standard | ASME B18.22.1, DIN 125 |
| Thread Form | UNC, UNF, Metric Coarse/Fine |
| Diameter Range | M6 – M100 / 1/4" – 4" |
| Length Range | 10mm – 500mm |
| Available Forms | Bolts, Studs, Nuts, Washers, Screws |
| Custom Sizes | Available on request |
| Inspection Standards | NACE MR0175, PMI, RT, UT |
Applications
