ThePipingMart Blog Products Inconel 800 Fasteners – Composition, Properties and Uses

Inconel 800 Fasteners – Composition, Properties and Uses

Inconel 800 Fasteners

Regarding high-temperature applications, Inconel 800 fasteners are essential for the success of operations. They are designed to withstand harsh environments, maintain strength even at elevated temperatures, and resist corrosion. Inconel 800 has outstanding properties, making it an ideal choice for various applications. In this blog post, we’ll delve into the composition of Inconel 800 fasteners and their physical and mechanical properties, uses, heat treatment, and corrosion resistance. So let’s get started!


Inconel 800 Fasteners Composition:

UNS N08800 Bolts, is a high-strength nickel-chromium alloy resistant to oxidation, corrosion, and carburization. The alloy is composed of nickel (30-35%), chromium (19-23%), iron (up to 39.5%), and trace amounts of other elements such as aluminium, titanium, and copper. These elements’ presence enhances the alloy’s mechanical and physical properties, making it suitable for high-stress applications.

Grade C Mn Si S Cu Fe Ni Cr Al Ti
800 0.10 max 1.50 max 1.00 max 0.015 max 0.75 max 39.50 min 30.00 – 35.00 19.00 – 23.00 0.15 – 0.60 0.15 – 0.60
800H 0.05 – 0.10 1.50 max 1.00 max 0.015 max 0.75 max 39.50 min 30.00 – 35.00 19.00 – 23.00 0.15 – 0.60 0.15 – 0.60
800HT 0.06 – 0.10 1.50 max 1.00 max 0.015 max 0.75 max 39.50 min 30.00 – 35.00 19.00 – 23.00 0.15 – 0.60 0.15 – 0.60

Inconel 800 Fasteners Physical Properties:

The physical properties of Alloy 800HT Fasteners are impressive. They have a density of 7.94 g/cm3, a melting point of 1350-1400°C, and a thermal conductivity of 11.4 W/m-K. They also have a coefficient of thermal expansion of 14.4 (10−6 /K) and are non-magnetic. These physical properties make Inconel 800 fasteners ideal for high-temperature applications.

Inconel 800 Fasteners Mechanical Properties:

The mechanical properties of UNS N08811 fasteners are equally impressive. They have a tensile strength of 520 MPa, yield strength of 205 MPa, and an elongation of 45%. These properties make UNS N08811 Nuts an excellent choice for high-stress applications in harsh environments.

Element Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
Alloy 800 / 800H / 800HT 7.94 g/cm3 1385 °C (2525 °F) Psi – 75,000 , MPa – 520 Psi – 30,000 , MPa – 205 30 %

Inconel 800 Fasteners Equivalent

Grade UNS No Old British Euronorm GOST Japanese JIS
Inconel 800 N06625 NA 13 NiCr15Fe 2.4816 NC15FE11M МНЖМц 28-2,5-1,5 NCF 800

Inconel 800 Fasteners Uses:

Inconel 800 fasteners are widely used in high-temperature applications such as heat exchangers, furnace components, steam generators, and gas turbines. They are also used in chemical processing equipment, nuclear power plants, and aerospace industries. Inconel 800 fasteners are popular because of their ability to withstand high temperatures and excellent corrosion resistance.

Inconel 800 Fasteners Heat Treatment:

UNS N08800 Nuts can be heat-treated to improve their mechanical and physical properties. The heat treatment involves heating the fasteners to 1000-1150°C, followed by quenching in water or oil. The fasteners are then tempered at a lower temperature to improve their flexibility and toughness. Heat treatment processes can significantly improve the strength and resistance to corrosion of UNS N08800 fasteners.

Inconel 800 Fasteners Corrosion Resistance:

Alloy 800HT Bolts and Nuts are corrosion-resistant and can withstand harsh environments. They are highly resistant to oxidation, carburization, and sulfidation, making them ideal for use in chemical processing industries where exposure to harsh chemicals is common. This corrosion resistance property also makes Inconel 800 fasteners suitable for marine and seawater applications.


The remarkable properties of UNS N08810 Screws make them an ideal choice for high-stress, high-temperature applications. They have impressive mechanical and physical properties, are easy to fabricate, and can be heat-treated to further enhance their properties. Inconel 800 fasteners are extensively used in various industries, such as chemical processing, nuclear power plants, and aerospace. The excellent corrosion resistance property of Inconel 800 fasteners makes them ideal for use in harsh environments. With all these unique properties, it is evident that Alloy 800 fasteners are essential for successful operations in various industries.

Related Post