Inconel 600 (UNS N06600)
Material: Inconel 600 (UNS N06600)
Type: Nickel-Chromium-Iron Alloy
Key Feature: Excellent oxidation & corrosion resistance at high temperature
Standards: ASTM B167 / B166 / B168 / B517
Forms: Pipe, Tube, Plate, Bar, Forging
Overview of Inconel 600 Alloy
Inconel 600 is a nickel-chromium alloy designed for excellent resistance to oxidation and corrosion at elevated temperatures. It performs well in chemical processing, heat treatment, and nuclear engineering applications.
Chemical Composition of Inconel 600
Inconel 600 composition consists primarily of nickel, chromium, and iron, with small additions of other elements. Below is the typical chemical composition of Inconel 600:
| Element | Percentage (%) |
|---|---|
| Nickel (Ni) | 72.0–76.0 |
| Chromium (Cr) | 14.0–17.0 |
| Iron (Fe) | 6.0–10.0 |
| Manganese (Mn) | 1.0 max |
| Copper (Cu) | 0.5 max |
| Silicon (Si) | 0.5 max |
| Carbon (C) | 0.15 max |
| Sulfur (S) | 0.015 max |
Mechanical/Physical Properties of Inconel 600
The physical properties of Inconel 600 provide its versatility in various applications. Solid solution strengthening gives outstanding mechanical properties at both room temperature and elevated temperatures.
| Property | Condition | Value | Unit |
|---|---|---|---|
| Tensile Strength | Annealed | ≥550 | MPa |
| Yield Strength (0.2%) | Annealed | ≥240 | MPa |
| Elongation | Annealed | ≥30 | % |
| Hardness | Annealed | ≤95 | HRB |
| Property | Value | Unit |
|---|---|---|
| Density | 8.47 | g/cm³ |
| Melting Point | 1370–1425 | °C |
| Thermal Conductivity | 14.9 | W/m·K |
| Electrical Resistivity | 1.03 | μΩ·m |
| Specific Heat | 444 | J/kg·K |
| Coefficient of Thermal Expansion | 13.3 × 10⁻⁶ | m/m·°C |
Standards and Product Forms
| Product Form | ASTM Standard | UNS | Condition | Typical Application |
|---|---|---|---|---|
| Seamless Pipe | ASTM B167 | N06600 | Annealed | Chemical processing, heat exchangers, furnace components |
| Welded Pipe | ASTM B517 | N06600 | Annealed | Corrosive fluid transfer systems, industrial piping |
| Seamless Tube | ASTM B167 | N06600 | Annealed | Heat exchangers, condensers, process tubing |
| Welded Tube | ASTM B517 | N06600 | Annealed | Instrumentation tubing, process control systems |
| Plate / Sheet / Strip | ASTM B168 | N06600 | Annealed | Furnace parts, chemical equipment, structural components |
| Bar / Rod | ASTM B166 | N06600 | Hot finished / Annealed | Fasteners, machining parts, structural components |
| Forgings | ASTM B564 | N06600 | Solution annealed | High strength mechanical parts, pressure equipment |
| Flanges | ASTM B564 | N06600 | Annealed | Piping systems, pressure vessels |
| Pipe Fittings | ASTM B366 | N06600 | Annealed | Elbows, tees, reducers, industrial piping connections |
Inconel 600 Pipe Dimensions
A. Pipe Size Table
| NPS | OD (mm) | SCH10S | SCH40 | SCH80 |
|---|---|---|---|---|
| 1/2" | 21.3 | 2.11 | 2.77 | 3.73 |
| 1" | 33.4 | 2.77 | 3.38 | 4.55 |
| 2" | 60.3 | 2.77 | 3.91 | 5.54 |
Applications of Inconel 600
- Chemical processing equipment
- Heat exchangers and furnace components
- Nuclear engineering systems
- Aerospace high-temperature parts
- Marine engineering in corrosive environments
Why Choose Inconel 600
- Excellent resistance to oxidation at high temperature
- Good resistance to chloride stress corrosion cracking
- Stable mechanical properties under thermal cycling
- Suitable for both reducing and oxidizing environments
Corrosion Resistance
Inconel 600 is highly resistant to corrosion, particularly in environments where resistance to stress corrosion cracking is critical. Its high nickel content makes it better for places like chemical processing and heat exchangers. The alloy’s excellent resistance to oxidation and carburization makes it ideal for high-temperature applications.
One of the notable characteristics of Inconel 600 is its superior resistance to chlorine and chlorine-containing environments. This property makes the applications highly effective when users involve chlorine gas or other chlorine compounds.
Inconel 600 shows great resistance to chlorine gas and chlorine compounds. This makes it good for many chemical processes, especially useful in making chlorinated chemicals and chlorinated solvents.
Key Applications in Chlorine-Related Industries:
- Chemical Processing: Reactors, piping systems, and equipment processing chlorine and chlorinated substances.
- Metallurgical Industry: Used in making metals like titanium and zirconium, including furnace parts, piping, and heat exchangers.
- Waste Disposal: Resistant to chlorine corrosion in waste disposal plants releasing chlorine gas or chlorinated compounds.
Heat Treatment and Processing
Inconel 600 can be easily heat-treated to optimize its mechanical properties. The alloy can go through different processes including annealing and solution heat treating.
These methods help achieve the right balance between strength and ductility. Also resistant to thermal embrittlement, this material makes a reliable choice in high-temperature environments.
| Heat Treatment Process | Temperature Range (°C) |
|---|---|
| Solution Annealing | 1000–1100 |
| Stress Relief | 750–900 |
The alloy keeps its strength and resists oxidation at high temperatures, making it suitable for heat exchanger tubing, reactors, and other applications.
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