Incoloy 800
Incoloy alloys fall into the category of super austenitic stainless steels. Primarily based on nickel, chromium and iron, they incorporate alloying elements including molybdenum, copper, nitrogen and silicon. These alloys boast outstanding high-temperature strength and superior corrosion resistance across diverse corrosive environments.
Incoloy 800 Basic Introduction
Incoloy alloys fall into the category of super austenitic stainless steels. Primarily based on nickel, chromium and iron, they incorporate alloying elements including molybdenum, copper, nitrogen and silicon. These alloys boast outstanding high-temperature strength and superior corrosion resistance across diverse corrosive environments.
Incoloy alloy 800 is a nickel-iron-chromium alloy. It retains structural stability and its austenitic phase even after prolonged exposure to high heat. Additionally, it features robust mechanical strength and excellent resistance to oxidation, reduction and aqueous corrosion. This alloy is supplied in standard forms including rounds, flats, forging billets, tubes, plates, sheets, wires and strips.
This datasheet details the chemical composition, properties and applications of Incoloy 800.
Incoloy 800 Chemical Composition
| UNS Designation | N08800 | N08810 | N08811 |
|---|---|---|---|
| Elements | Incoloy 800 | Incoloy 800H | Incoloy 800HT |
| Nickel, Ni | 30.0-35.0 | 30.0-35.0 | 30.0-35.0 |
| Chromium, Cr | 19.0-23.0 | 19.0-23.0 | 19.0-23.0 |
| Iron, Fe | 39.5 min. | 39.5 min. | 39.5 min. |
| Carbon, C | 0.10 max. | 0.05-0.10 | 0.06-0.10 |
| Aluminum, Al | 0.15-0.60 | 0.15-0.60 | 0.25-0.60 |
| Titanium, Ti | 0.15-0.60 | 0.15-0.60 | 0.25-0.60 |
| Al + Ti | 0.30-1.20 | 0.30-1.20 | 0.85-1.20 |
| Manganese, Mn | 1.5 max. | 1.5 max. | 1.5 max. |
Incoloy Alloy 800 Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.94 gm/cm³ | 0.287 lb/in³ |
Incoloy Alloy 800 Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength(annealed) | 600 MPa | 87 ksi |
| Yield strength(annealed) | 275 MPa | 39.9 ksi |
| Elongation at Break | 45% | 45% |
Incoloy Alloy 800 Applications
Typical applications of Incoloy alloy 800 include:
- Heat exchangers
- Carburizing equipment
- Heating elements
- Sheath materials and tubing for nuclear steam generators
Applications of Inconel 600 High-Temperature Alloys
In the aerospace and aviation industry, Inconel 600 is used in heat exchangers, engine components, and jet engine seals due to its high-temperature stability and corrosion resistance.
In the power generation sector, Inconel 600 is found in turbines, heat exchangers, and reactor cores. Its high creep resistance ensures durability under sustained thermal stress.
In the oil and gas industry, Inconel 600 is used in downhole equipment, risers, and sulfur-containing gas environments, where resistance to sulfide corrosion is crucial.
In the energy sector, this alloy is used in nuclear reactors and geothermal systems, benefiting from its ability to withstand oxidation and chemical exposure over time.
In marine applications, Inconel 600 resists seawater corrosion and is used in exhaust systems, valves, and heat exchangers in ships and submarines.
The mining industry uses it in pumps, valves, and wear-resistant components exposed to abrasive and corrosive environments.
In the automotive sector, Inconel 600 is used in exhaust manifolds and turbochargers, where high-temperature performance and oxidation resistance are required. In chemical processing, Inconel 600 is used in heat exchangers, reactors, and piping systems exposed to acidic and alkaline environments.
For the pharmaceutical and food industries, it is suitable for sterile equipment such as valves and heat exchangers, where corrosion resistance is critical to product safety.
In the military and defense sectors, Inconel 600 is used in missile components, jet engines, and defense systems requiring reliable operation under extreme conditions.
In the nuclear energy industry, it plays a role in reactor control systems and heat exchangers, providing stability under radioactive exposure and high temperatures.
When to Choose Inconel 600 High Temperature Alloy
Inconel 600 is ideal when high corrosion resistance, mechanical strength, and thermal stability are required. Industries handling extreme environments—such as aerospace, oil and gas, and nuclear energy—benefit from the alloy's ability to operate reliably at fluctuating temperatures. Its compatibility with custom high temperature alloy parts allows engineers to design components to precisely meet specifications.
Furthermore, Inconel 600 offers a combination of oxidation resistance and mechanical integrity, making it suitable for power generation and chemical processing applications. Its superior performance under stress and heat ensures the durability of components, minimizing maintenance and downtime across industries.
