What are Inconel 800HT Fasteners?
These Inconel 800HT Fasteners are nickel-iron-chromium alloy fasteners made from UNS N08811 / WNR 1.4959. It possesses good oxidation, carburization, sulfidation and high temperature corrosion resistance with superior strength and mechanical property up to 1100°C. Inconel 800HT fasteners are utilized in heat exchangers, furnace equipment, petrochemical, and power generation plants.
Incoloy 800HT fasteners manufacturer in India
Inconel 800HT fasteners are high-performance nickel-iron-chromium alloy fasteners developed to work efficiently in the environment of high temperatures and corrosion service conditions. The Alloy 800HT offers high strength, oxidation, carburization resistance and outstanding creep rupture strength which finds applications in petrochemical plants, power generating equipment, industrial furnaces, heat treating furnaces, chemical industries, offshore drilling and others.
Being an experienced and professional Incoloy 800HT Fasteners manufacturer, we offer extensive line up of fasteners including nuts, bolts, screws, washers, threaded rods, stud bolt, anchor bolt and other fasteners engineered as per global ASTM, ASME, DIN, ISO, NACE and other international standards. Our fasteners are guaranteed for high performance and longevity under severe conditions where other stainless steel fasteners are not suitable.
What is Incoloy 800HT?
Incoloy 800HT is an improved grade of Alloy 800 with controlled levels of carbon, aluminum and titanium. The alloy is designed to provide improved creep strength and rupture resistance at elevated temperature.
Incoloy 800HT Bolts have better mechanical properties than conventional Alloy 800 in long-term exposure to temperature range from 600°C to 1100°C. This makes them ideal for critical industrial applications requiring long term thermal stability.
Common Designations
- UNS N08811
- DIN 1.4959 Fasteners
- WNR 1.4959
- Alloy 800HT
- Incoloy 800HT
- Nickel Alloy 800HT
Table of Contents
- ➤ What is Incoloy 800HT?
- ➤ Types of Inconel 800HT Fasteners We Supply
- ➤ Inconel 800HT Fasteners Specifications
- ➤ UNS N08811 Chemical Composition Chart
- ➤ Incoloy 800HT Mechanical Properties
- ➤ Key Features and Advantages of Inconel 800HT Fasteners
- ➤ Applications of Inconel 800HT Fasteners
- ➤ NACE MR0175 Alloy 800HT Bolts for Sour Service Applications
- ➤ Available Sizes, Dimensions & Custom Manufacturing
- ➤ Why Choose Us as Your Inconel 800HT Fasteners Supplier?
Types of Inconel 800HT Fasteners We Supply
We manufacture and stock a complete range of Inconel 800HT Fasteners for industrial and engineering applications.
Available Products
- Incoloy 800HT Bolts
- ASTM B408 Alloy 800HT Bolts Nut
- Inconel Alloy 800HT Stud Bolts
- Inconel 1.4859 Anchor Bolts
- Nickel Alloy 800HT Anchor Bolts
- Hex Bolts
- Heavy Hex Bolts
- Socket Head Cap Screws
- Hex Nuts
- Lock Nuts
- Eye Bolts
- U-Bolts
- Washers
- Spring Washers
- Threaded Rods
- Studs
- Foundation Bolts
- Custom CNC Machined Fasteners
Whether your project requires standard fastening components or customized solutions, we can manufacture products according to client drawings and specifications.
Inconel 800HT Fasteners Specifications
| Specification | Details |
|---|---|
| Material Grade | Incoloy 800HT |
| UNS Number | N08811 |
| Werkstoff Number | 1.4959 |
| ASTM Standards | ASTM B408, ASTM F468, ASTM F593 |
| ASME Standards | ASME SB408 |
| DIN Standard | DIN 1.4959 Fasteners |
| Thread Types | Metric, UNC, UNF, BSW |
| Size Range | M3 to M100 |
| Length | Up to 5 Meters & Custom |
| Certification | EN 10204 3.1, PMI, Third-Party Inspection |
| Compliance | NACE MR0175 Alloy 800HT Bolts Available |
UNS N08811 Chemical Composition Chart
The controlled chemistry of Alloy 800HT contributes significantly to its superior high-temperature performance.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 30.0 – 35.0 |
| Chromium (Cr) | 19.0 – 23.0 |
| Iron (Fe) | Balance |
| Carbon (C) | 0.06 – 0.10 |
| Aluminum (Al) | 0.15 – 0.60 |
| Titanium (Ti) | 0.15 – 0.60 |
| Silicon (Si) | 1.0 Max |
| Manganese (Mn) | 1.5 Max |
| Sulfur (S) | 0.015 Max |
| Copper (Cu) | 0.75 Max |
Incoloy 800HT Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 450 MPa Min |
| Yield Strength (0.2% Offset) | 180 MPa Min |
| Elongation | 30% Min |
| Hardness | 170 HB Max |
| Density | 7.94 g/cm³ |
| Melting Range | 1357°C – 1385°C |
Key Features and Advantages of Inconel 800HT Fasteners
Industries worldwide rely on Inconel 800HT Fasteners Suppliers because of the alloy's unique combination of corrosion resistance and elevated-temperature strength.
Key Advantages
- Excellent resistance to oxidation up to 1100°C
- High creep and stress rupture strength
- Superior performance in cyclic heating environments
- Excellent resistance to carburization and nitriding
- Good weldability and fabrication characteristics
- Outstanding mechanical stability during long-term service
- Suitable for highly corrosive industrial atmospheres
- Excellent resistance to scaling and thermal fatigue
These properties make Inconel Alloy 800HT Stud Bolts ideal for severe industrial environments where reliability is essential.
Applications of Inconel 800HT Fasteners
Because of their high-temperature strength and corrosion resistance, Incoloy 800HT Fasteners are used across multiple industries.
Petrochemical Industry- Reformer units
- Furnace systems
- Cracking units
- Heat exchangers
- Offshore platforms
- Refinery processing units
- Sour gas service equipment
- Boiler systems
- Steam turbines
- Superheaters
- Nuclear power facilities
- Reaction vessels
- High-temperature piping systems
- Pressure equipment
- Furnace fixtures
- Kiln components
- Thermal processing systems
- High-temperature structural assemblies
- Exhaust systems
NACE MR0175 Alloy 800HT Bolts for Sour Service Applications
For oil and gas environments containing hydrogen sulfide (H₂S), we supply NACE MR0175 Alloy 800HT Bolts that meet industry requirements for sour service applications.
These fasteners are manufactured with strict quality control procedures to ensure resistance against sulfide stress cracking and corrosion-related failures in demanding offshore and refinery environments.
Available Sizes, Dimensions & Custom Manufacturing
| Parameter | Range |
|---|---|
| Diameter | M3 to M100 |
| Length | Custom Length Available |
| Thread Form | Metric, UNC, UNF, BSW |
| Surface Finish | Plain, Passivated, Polished |
| Standards | ASTM, ASME, DIN, ISO, BS |
| Manufacturing | Hot Forged, CNC Machined, Precision Threaded |
| Testing | PMI, Mechanical Testing, Third Party Inspection |
Why Choose Us as Your Inconel 800HT Fasteners Supplier?
Selecting the right fastening supplier directly impacts the safety and performance of industrial equipment.
What We Offer
- Extensive inventory availability
- Fast global delivery
- Custom manufacturing capabilities
- Competitive pricing
- Complete traceability
- Third-party inspection support
- International quality standards compliance
- Technical assistance for material selection
As a trusted Inconel 800HT Fasteners Stockist and exporter, we support customers across power generation, oil & gas, petrochemical, EPC, marine, and heavy engineering industries.
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Frequently Asked Questions
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