Hastelloy X Fasteners are crafted from a distinctive alloy, an austenitic nickel-chromium-molybdenum material, tailored for versatile applications. The amalgamation of these elements yields a robust yet lightweight fastening solution resistant to corrosion and high temperatures. This renders them indispensable in automotive, industrial equipment manufacturing, and petrochemical processing industries. Notably, Hastelloy X Fasteners exhibit resistance to chloride stress corrosion cracking, attributed to the presence of molybdenum in the alloy. Furthermore, they boast excellent high-temperature oxidation resistance and carburization resistance, ensuring reliable performance in demanding environments.
ASTM B574 Hastelloy X Fasteners are highly versatile and find application across various industries owing to their robust properties. They are commonly employed in connecting parts with flanges or pipes, securing valves or hoses with clips or bolts, fastening electronic components into place with screws or nuts, and attaching structural components with rivets or pins. Notably, these fasteners exhibit excellent strength even at elevated temperatures of up to 1400°C (2550°F), making them particularly suitable for aerospace applications where weight savings are crucial, yet strength remains imperative. In addition to Hastelloy X Fasteners, a range of Hastelloy fasteners are available, including Hastelloy C276 Fasteners, Hastelloy C22 Fasteners, and more, catering to diverse industrial requirements.
Standard HASTELLOY X Fasteners specifications as per Fasteners manufacturers.
| Material | Hastelloy X |
| Specification | IS/BS/ASTM |
| Standards | ASTM B572 |
| Size | 3 mm to 200 mm |
| Length | M02 to M30 |
Each HASTELLOY X Fasteners have unique design each of them are used in specific applications. Some of them are mentioned below.
Note that this chart includes only some of the most common sizes of HASTELLOY X Bolt. There are many other sizes available as well, and some applications may require custom sizes or special configurations.
Nickel (Ni)
Approximately 47.5 - 50.5%
Chromium (Cr)
Approximately 20.5 - 23%
Iron (Fe)
Approximately 17 - 20%
Molybdenum (Mo)
Approximately 8 - 10%
Cobalt (Co)
Approximately 0.5 - 2.5%
Tungsten (W)
Approximately 0.2 - 1%
Carbon (C)
Maximum of 0.05%
Silicon (Si)
Maximum of 0.5%
Manganese (Mn)
Maximum of 1%
Phosphorus (P)
Maximum of 0.04%
Sulfur (S)
Maximum of 0.03%
Aluminum (Al)
Maximum of 0.5%
Titanium (Ti)
Maximum of 0.15%
Copper (Cu)
Maximum of 0.5%
Boron (B)
Maximum of 0.006%
Lead (Pb)
Maximum of 0.005%
Zirconium (Zr)
Maximum of 0.1%
| Density | 8.22 g/cm³ (0.297 lb/in³) |
| Melting Point | 1370 °C (2500 °F) |
| Tensile Strength | 100 ksi (690 MPa) minimum |
| Yield Strength (0.2%Offset) | 45 ksi (310 MPa) minimum |
| Elongation | 20% minimum |
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