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by Tubotech Alloys INC
Do you want ‘High-Performance’ Hastelloy Fasteners that can withstand hostile environments for your piping and tubing business? If ‘Yes’ then, you must contact us at Tubotech, a top piping and manufacturing company in India today. Since, we specifically engineer our fastening components to deliver for your business ‘High’ corrosion resistance.
More importantly, we have manufactured high-quality Hastelloy Fasteners for your business using a high-quality ‘Alloy’ containing ‘Nickel’. A major ‘Reason’ you can use them in a piping system for withstanding any type of ‘Condition’. For example, high temperature and pressure.
We at Tubotech, a leading piping and manufacturing company in India focus on supplying a wide range of Hastelloy fasteners grades depending on quality. They include Hastelloy C22, C276, B2, and X. Our major goal is to offer you fastener solutions precisely tailored as per your business requirement. Above all, we seek to deliver Hastelloy Fasteners that offer your piping system that can withstand an extreme environment and prove its ‘Durability’ in the long-term.






There are several specifications of Hastelloy Fasteners that you need to understand before you look to purchase. They are given below:
| Property | Details |
|---|---|
| Material Grades | Hastelloy C276, C22, B2, X, G30 |
| UNS Designations | C276 (UNS N10276), C22 (UNS N06022), B2 (UNS N10665), X (UNS N06002) |
| Standards | ASTM B574, B575, B622, B619, B366; ASME SB575, SB574 |
| Sizes Available | M3 to M56 (Metric) / 3/16″ to 2″ (Inch) |
| Types | Hex Bolts, Studs, Nuts, Socket Screws, Washers, Threaded Rods |
| Thread Types | Metric (Coarse & Fine), UNC, UNF |
| Tensile Strength | 690–825 MPa (varies by grade) |
| Yield Strength | 280–355 MPa |
| Hardness | Up to 240 HB (depending on condition) |
| Density | ~8.9 g/cm³ (varies by grade) |
| Melting Range | ~1325°C to 1370°C (2417°F to 2500°F) |
| Corrosion Resistance | Excellent – especially against chlorides, acids, and oxidizing agents |
| Temperature Range | Cryogenic to ~1100°C (~2000°F) depending on grade |
| Magnetic Properties | Non-magnetic |
| Finish Options | Plain, Passivated, Electropolished, Coated (e.g. PTFE) |
| Certifications | EN 10204 3.1 / 3.2, NACE MR0175, ISO 9001:2015, PED compliant |
Do you know ‘Why’ Hastelloy Fasteners prove to be strong and durable components for a piping system? If yes then you need to read the table given below containing chemical contents of the Hastelloy Fasteners.
| Element | C276 (UNS N10276) | C22 (UNS N06022) | B2 (UNS N10665) | X (UNS N06002) | Function |
|---|---|---|---|---|---|
| Nickel (Ni) | 57.0 min | Balance | Balance | 47.0 – 61.0 | Base element for corrosion resistance |
| Molybdenum (Mo) | 15.0 – 17.0 | 12.5 – 14.5 | 26.0 – 30.0 | 14.0 – 17.0 | Enhances pitting and crevice corrosion resistance |
| Chromium (Cr) | 14.5 – 16.5 | 20.0 – 22.5 | 0.2 max | 20.5 – 23.0 | Provides oxidation and acid resistance |
| Iron (Fe) | 4.0 – 7.0 | 2.0 – 6.0 | 2.0 max | 17.0 – 20.0 | Improves mechanical strength |
| Cobalt (Co) | 2.5 max | 2.5 max | 1.0 max | 1.0 max | Impurity control |
| Tungsten (W) | 3.0 – 4.5 | 2.5 – 3.5 | — | — | Increases strength and corrosion resistance |
| Carbon (C) | 0.010 max | 0.015 max | 0.02 max | 0.05 – 0.15 | Low carbon prevents carbide precipitation |
| Silicon (Si) | 0.08 max | 0.08 max | 0.10 max | 1.0 max | Deoxidizer |
| Manganese (Mn) | 1.0 max | 0.50 max | 1.0 max | 1.0 max | Improves hot workability |
| Vanadium (V) | — | — | — | 0.20 – 0.40 | Grain refinement |
| Phosphorus (P) | 0.04 max | 0.02 max | 0.04 max | 0.04 max | Controlled impurity |
| Sulfur (S) | 0.03 max | 0.02 max | 0.03 max | 0.03 max | Controlled impurity |
There are few mechanical properties of Hastelloy Fasteners which makes them a strong and efficient component for ANY piping system. They are given in the table below:
| Element | C276 (UNS N10276) | C22 (UNS N06022) | B2 (UNS N10665) | X (UNS N06002) | Function |
|---|---|---|---|---|---|
| Nickel (Ni) | 57.0 min | Balance | Balance | 47.0 – 61.0 | Base element for corrosion resistance |
| Molybdenum (Mo) | 15.0 – 17.0 | 12.5 – 14.5 | 26.0 – 30.0 | 14.0 – 17.0 | Enhances pitting and crevice corrosion resistance |
| Chromium (Cr) | 14.5 – 16.5 | 20.0 – 22.5 | 0.2 max | 20.5 – 23.0 | Provides oxidation and acid resistance |
| Iron (Fe) | 4.0 – 7.0 | 2.0 – 6.0 | 2.0 max | 17.0 – 20.0 | Improves mechanical strength |
| Cobalt (Co) | 2.5 max | 2.5 max | 1.0 max | 1.0 max | Impurity control |
| Tungsten (W) | 3.0 – 4.5 | 2.5 – 3.5 | — | — | Increases strength and corrosion resistance |
| Carbon (C) | 0.010 max | 0.015 max | 0.02 max | 0.05 – 0.15 | Low carbon prevents carbide precipitation |
| Silicon (Si) | 0.08 max | 0.08 max | 0.10 max | 1.0 max | Deoxidizer |
| Manganese (Mn) | 1.0 max | 0.50 max | 1.0 max | 1.0 max | Improves hot workability |
| Vanadium (V) | — | — | — | 0.20 – 0.40 | Grain refinement |
| Phosphorus (P) | 0.04 max | 0.02 max | 0.04 max | 0.04 max | Controlled impurity |
| Sulfur (S) | 0.03 max | 0.02 max | 0.03 max | 0.03 max | Controlled impurity |
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
Typically, Hastelloy Fasteners are available in various types and subtypes. They are given below in the form of a list:
It is depending on the ‘Types’ of Hastelloy Fasteners that there are different ‘Sizes’ available. They are given in table form below:
| Metric Sizes (Dia) | M3 to M56 |
|---|---|
| Imperial Sizes (Dia) | 3/16″ to 2″ |
| Length Range | 6 mm to 300 mm (¼” to 12″) |
| Threads | Metric (Coarse & Fine), UNC, UNF, UN8–UN24 |
| Metric Sizes (Dia) | M3 to M56 |
|---|---|
| Imperial Sizes (Dia) | 3/16″ to 2″ |
| Height Options | Standard, Thin (Jam Nuts), Heavy Hex |
| Outer Diameter (OD) | 6 mm to 100 mm (¼” to 4″) |
|---|---|
| Thickness Range | 0.5 mm to 5 mm (Custom available) |
| Diameter | M6 to M48 / ¼” to 1-1/2″ |
|---|---|
| Length | Up to 3 meters (10 ft), longer on request |
Usually, the weight of Hastelloy Fasteners will depend on a couple of major factors, which includes density of about 8.9 g/cm³, dimensions, and types. They are given in table below:
| Bolt Size | Length (mm) | Approx. Weight (grams) |
|---|---|---|
| M6 | 20 mm | 7.5 g |
| M8 | 30 mm | 17 g |
| M10 | 40 mm | 33 g |
| M12 | 50 mm | 56 g |
| M16 | 60 mm | 113 g |
| M20 | 80 mm | 205 g |
| M24 | 100 mm | 340 g |
| Nut Size | Approx. Weight (grams) |
|---|---|
| M6 | 2.5 g |
| M8 | 5.2 g |
| M10 | 10 g |
| M12 | 17.5 g |
| M16 | 34 g |
| M20 | 56 g |
| M24 | 82 g |
| Washer Size | Approx. Weight (grams) |
|---|---|
| M6 | 1.5 g |
| M8 | 2.8 g |
| M10 | 4.7 g |
| M12 | 6.5 g |
| M16 | 10.8 g |
| M20 | 17.6 g |
It is because of ‘Durability’ that Hastelloy Fasteners are used in a wide range of industries. They are given below:
We at Tubotech, a leading piping and manufacturing company in India offer you performance-driven fastening solutions. However, there are other reasons why you must choose Hastelloy fasteners from us. They are given below:
Choose Tubotech for your subsequent project concerning Hastelloy Fasteners and benefit from reliability and quality. Whether your requirement is small batch or bulk export, our technical institution is here to help you.
Tubotech delivers precision-engineered tubing, fittings, and fasteners with innovative solutions and customizable options. Trusted for quality and durability, we serve industries requiring reliable, high-performance piping and instrumentation products.
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