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by Tubotech Alloys INC
We at Tubotech, a leading piping and tubing manufacturing company in India offer you Incoloy 825 Fasteners as the shining example of ‘High-Performance’ fastening solution. They have been engineered with ‘Precision’ to ‘Perfection’. Hence, they are renowned for their outstanding resistance to corrosion, particularly in acidic and marine conditions.
Our Incoloy 825 Fasteners have been manufactured using high-quality nickel-iron-chromium alloy which is enriched with molybdenum, copper, and titanium. Besides, apart from high pressure and temperature they are capable of offering superior resistance to sulfuric and phosphoric acids, oxidizing and reducing agents, and stress-corrosion cracking.
Above all, we at Tubotech, a top piping and tubing manufacturing company in India are here to provide your business with Incoloy 825 Fasteners that comply with international standards and also supported ably by quality technical support.




There are many specifications details that you need to understand about Incoloy 825 Fasteners before you choose to buy it for your business. They are given in a table below:
| Specification | Details |
|---|---|
| Material Name | Incoloy 825 |
| UNS Number | N08825 |
| WNR Number | 2.4858 |
| Standards | ASTM B425 (Bar, Rod), ASTM B564 (Forgings), ASTM B366 (Fittings), ASTM B366 |
| Grade | Alloy 825 / Incoloy 825 |
| Product Forms | Hex Bolts, Nuts, Washers, Threaded Rods, Studs, Socket Screws, Custom Parts |
| Size Range | M6 to M100 / 1/4″ to 4″ |
| Length Range | 10 mm to 1000 mm / Custom lengths available |
| Threads | Metric, UNC, UNF, BSW, NPT |
| Finish Options | Plain, Passivated, PTFE Coated, Hot-Dip Galvanized |
| Density | 8.14 g/cm³ |
| Melting Point | 1370 – 1400 °C (2500 – 2550 °F) |
| Corrosion Resistance | Excellent in sulfuric, phosphoric, nitric, and hydrochloric acids |
| Temperature Range | Up to 540°C (1000°F) for prolonged use |
Incoloy 825 Fasteners are an integral component of piping and tubing systems made from an ‘Alloy’ containing a mixture of chemical compounds. They are given in the table below:
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 38.0 – 46.0 |
| Iron (Fe) | Balance |
| Chromium (Cr) | 19.5 – 23.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Copper (Cu) | 1.5 – 3.0 |
| Titanium (Ti) | 0.6 – 1.2 |
| Manganese (Mn) | ≤ 1.0 |
| Carbon (C) | ≤ 0.05 |
| Silicon (Si) | ≤ 0.5 |
| Aluminum (Al) | ≤ 0.2 |
| Sulfur (S) | ≤ 0.03 |
Due to the mechanical properties given below in the table Incoloy 825 Fasteners prove to be durable and strong under extreme conditions.
| Property | Value |
|---|---|
| Tensile Strength | ≥ 585 MPa (85 ksi) |
| Yield Strength (0.2%) | ≥ 220 MPa (32 ksi) |
| Elongation | ≥ 30% in 50 mm |
| Hardness (Brinell) | ≤ 200 HB |
| Modulus of Elasticity | ~ 196 GPa (28.4 × 10⁶ psi) |
| Poisson’s Ratio | 0.33 |
| Density | 8.14 g/cm³ |
| Melting Point | 1370 – 1400 °C (2500 – 2550 °F) |
| Service Temperature | Up to ~540°C (1000°F) in continuous use |
These fittings are crucial in ensuring smooth, dependable, and ordinary fluid and gas waft at some stage in various high-stakes programs.
Typically, there are about 6 types of Incoloy 825 Fasteners and several subtypes. They are given below:
Incoloy 825 Fasteners are available in several types of ‘Sizes’. They are available in the table given below:
| Fastener Type | Size Range (Metric) | Size Range (Inch) | Length Range |
|---|---|---|---|
| Hex Bolts / Screws | M6 to M100 | 1/4″ to 4″ | 10 mm to 1000 mm / 1/2″ to 40″ |
| Nuts | M6 to M100 | 1/4″ to 4″ | Standard height / custom on request |
| Washers | OD: 12 mm to 150 mm | OD: 1/2″ to 6″ | Thickness: 0.5 mm to 10 mm |
| Threaded Rods | M6 to M64 | 1/4″ to 2-1/2″ | Up to 3000 mm / 10 feet (custom) |
| Stud Bolts | M8 to M64 | 5/16″ to 2-1/2″ | Cut lengths or full thread options |
| Socket Screws | M6 to M48 | 1/4″ to 2″ | 10 mm to 300 mm |
The weight of different types of Incoloy 825 Fasteners based on standard dimensions and the material density of 8.14 g/cm³: They are given in the table below:
| Bolt Size (Dia × Length) | Approx. Weight (grams) |
|---|---|
| M6 × 20 | 12 |
| M8 × 25 | 22 |
| M10 × 30 | 38 |
| M12 × 40 | 68 |
| M16 × 50 | 135 |
| M20 × 60 | 220 |
| M24 × 70 | 340 |
| M30 × 80 | 540 |
| Nut Size | Approx. Weight (grams) |
|---|---|
| M6 | 2.5 |
| M8 | 5.2 |
| M10 | 10.3 |
| M12 | 15.5 |
| M16 | 30.4 |
| M20 | 49.8 |
| M24 | 72.5 |
| M30 | 115 |
| Washer Size | Outer Dia × Thickness (mm) | Approx. Weight (grams) |
|---|---|---|
| M6 | 12 × 1.6 | 1.1 |
| M8 | 16 × 1.6 | 2.2 |
| M10 | 20 × 2.0 | 4.0 |
| M12 | 24 × 2.5 | 6.8 |
| M16 | 30 × 3.0 | 12.5 |
| M20 | 37 × 3.0 | 18.7 |
| M24 | 44 × 4.0 | 29.8 |
There are several industries in which Incoloy 825 Fasteners are used regularly because of their durability. They are given below:
Are you looking for a trusted fastening solution provider for your business? If yes, then you must choose us at Tubotech,a top piping and tubing manufacturing company in India because of the following reasons given below:
Choose Tubotech for your subsequent project concerning Incoloy 825 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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