ASTM B829 is a specification standard that covers seamless pipes made of Inconel 600, a high-performance nickel-chromium alloy known for its excellent resistance to oxidation and corrosion in a variety of demanding environments. Inconel 600 (UNS N06600) is widely used in industries where both high-temperature strength and resistance to corrosive environments are essential.
ASTM B829 Inconel 600 Seamless Pipes Chemical Composition
The chemical composition of Inconel Alloy 600 is provided in the table below:
Ni + Co |
Cr |
Fe |
C |
Mn |
S |
Si |
Cu |
72.0 min |
14.0-17.0 |
6.0-10.0 |
.15 max |
1.00 max |
.015 max |
.50 max |
.50 max |
ASTM B829 Inconel 600 Seamless Pipes Mechanical Properties
Typical room temperature Tensile Properties of Annealed Material
Product Form |
Condition |
Tensile (ksi) |
.2% Yield (ksi) |
Elongation (%) |
Hardness (HRB) |
Tube & Pipe |
ot-Finished |
75-100 |
25-50 |
35*55 |
- |
Tube & Pipe |
Cold-Drawn |
80-100 |
25-50 |
35-55 |
88 Max |
Key Properties of ASTM B829 Inconel 600 Seamless Pipes
- High Temperature Resistance:
Inconel 600 exhibits excellent resistance to oxidation at high temperatures, maintaining strength and integrity even at temperatures up to 2,000°F (1,093°C).
The alloy remains highly resistant to scaling, making it an ideal material for high-temperature applications such as furnace components, heat exchangers, and gas turbine engines.
- Corrosion Resistance:
Inconel 600 provides excellent resistance to oxidation and carburization in both air and industrial environments.
It is highly resistant to corrosion in aqueous environments containing acids like sulfuric acid and hydrochloric acid, making it suitable for chemical processing.
The alloy also resists corrosion in high-temperature chloride environments, making it a choice material for saltwater and coastal applications.
- Excellent Weldability:
ASTM B829 Inconel 600 seamless pipes are known for their excellent weldability and can be welded using various processes, including TIG, MIG, and electron beam welding, without significant loss of strength or corrosion resistance.
- Mechanical Properties:
Tensile Strength: Inconel 600 has a high tensile strength, typically around 75,000 psi (515 MPa) at room temperature.
Yield Strength: Approximately 30,000 psi (205 MPa).
Elongation: This alloy exhibits a good elongation percentage of 30% in the annealed condition, which allows it to withstand deformation without cracking.
- Low Magnetic Permeability:
Inconel 600 has low magnetic permeability, which makes it suitable for applications in electrical and electronic industries where magnetic interference needs to be minimized.
- Resistance to Stress Corrosion Cracking:
Inconel 600 offers good resistance to stress corrosion cracking in environments where other materials, particularly alloys with higher chromium content, may fail. It is particularly resistant to stress corrosion in chloride and high-temperature environments.
Applications of ASTM B829 Inconel 600 Seamless Pipes
- Aerospace and Aircraft Industries:
Inconel 600 is used in aerospace applications such as jet engine components, combustion chambers, and turbines due to its ability to perform in high-temperature environments.
The alloy is also used in heat exchangers, reactor cores, and other parts exposed to extreme thermal cycling.
- Chemical Processing:
Inconel 600 pipes are commonly used in chemical processing industries for handling aggressive chemicals, including sulfuric acid and hydrochloric acid, where other alloys would corrode.
It is used for heat exchangers, reactor components, and piping systems that are exposed to corrosive chemicals and high temperatures.
- Power Generation:
Power plants utilize Inconel 600 in their systems due to its resistance to high-temperature gases, combustion environments, and steam.
The alloy is used in components such as gas turbines, boilers, steam pipes, and valves.
- Nuclear Power:
Inconel 600 is used in the nuclear industry for the fabrication of components in reactors and steam generators due to its stability and resistance to high radiation levels and thermal shock.
- Marine and Offshore:
The alloy’s resistance to chloride-induced stress corrosion cracking makes it ideal for use in marine environments, including seawater desalination plants, offshore oil rigs, and marine piping systems.
- Food and Pharmaceutical Industries:
Inconel 600 is used in heat exchangers and pipes in food processing and pharmaceutical industries, particularly where high temperature and corrosion resistance are required.
- Heat Treatment Furnaces:
Due to its high resistance to oxidation, Inconel 600 is used in heat treatment furnace components, such as baskets, fixtures, and other structural parts.