Inconel 600 Flanges
Inconel 600 flanges are engineered from a nickel-chromium-iron alloy, designed to withstand extreme environments, including high temperatures and corrosive conditions. These flanges are widely used in industries such as chemical processing, aerospace, and power generation due to their superior mechanical strength, excellent oxidation resistance, and outstanding performance in high-temperature applications.
Inconel 600 Flanges Specifications:
- Standard: ASTM B564, ASME SB564
- Grade: Inconel 600, UNS N06600
- Sizes: 1/2" to 48" (Custom sizes available)
- Pressure Ratings: 150#, 300#, 600#, 900#, 1500#, 2500#
- Flange Types: Slip-On, Weld Neck, Blind, Socket Weld, Threaded, Lap Joint, Orifice
- Manufacturing Process: Forged, Heat Treated, Machined
Inconel 600 Chemical Composition:
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 72.0 min |
| Chromium (Cr) | 14.0-17.0 |
| Iron (Fe) | 6.0-10.0 |
| Carbon (C) | 0.15 max |
| Manganese (Mn) | 1.00 max |
| Sulfur (S) | 0.015 max |
| Silicon (Si) | 0.50 max |
| Copper (Cu) | 0.50 max |
Inconel 600 Mechanical Properties:
| Property | Value |
|---|---|
| Tensile Strength | 550 MPa (80 ksi) min |
| Yield Strength (0.2% Offset) | 240 MPa (35 ksi) min |
| Elongation | 30% min |
| Hardness | Rb 88 max |
Inconel 600 Physical Properties:
| Property | Value |
|---|---|
| Density | 8.47 g/cm³ |
| Melting Point | 1354-1413°C |
| Thermal Conductivity | 14.9 W/m·K |
| Electrical Resistivity | 103.6 µΩ·cm |
Possible Alternative Grades:
| Alloy | UNS Number | Description |
|---|---|---|
| Inconel 601 | N06601 | Enhanced oxidation resistance |
| Inconel 625 | N06625 | Improved strength and corrosion resistance |
| Hastelloy C22 | N06022 | Superior corrosion resistance in harsh environments |
| Monel 400 | N04400 | High strength and corrosion resistance to seawater |
Chemical Formula:
The approximate chemical formula for Inconel 600 is Ni72Cr15Fe8, representing its primary elements.
Grade Specification Comparison:
| Specification | Inconel 600 | Inconel 625 | Hastelloy C22 |
|---|---|---|---|
| Nickel Content (%) | 72 min | 58 min | 56 min |
| Chromium Content (%) | 14-17 | 20-23 | 20-22 |
| Tensile Strength (MPa) | 550 | 930 | 690 |
| Yield Strength (MPa) | 240 | 517 | 283 |
Corrosion Resistance:
Inconel 600 flanges exhibit excellent resistance to:
- Oxidation and scaling: Occurs at elevated temperatures.
- Chloride-ion stress corrosion cracking: A concern in specific conditions.
- Acidic and alkaline environments: Including nitric and sulfuric acids.
- Seawater and various atmospheric conditions: Resistance in challenging environments.
Heat Resistance:
- Maintains mechanical integrity at temperatures up to 1093°C (2000°F).
- Resistant to oxidation and carburization in high-temperature environments.
- Suitable for furnace components, heat exchangers, and gas turbines.
Heat Treatment:
- Solution annealing is performed at 980-1150°C (1800-2100°F) followed by rapid air or water quenching.
- Heat treatment enhances corrosion resistance and mechanical properties.
Welding:
- Welding Process: Suitable for GTAW (TIG), GMAW (MIG), SMAW, and SAW.
- Filler Metal: Inconel 82 or Inconel 182 recommended.
- Post-Weld Treatment: Generally not required but can be stress-relieved if necessary.
- Characteristics: Produces strong and ductile welds with minimal cracking susceptibility.
Fabrication:
- Readily fabricated by standard processes such as machining, forming, and forging.
- Cold working enhances strength, while hot working is performed at 870-1230°C (1600-2250°F).
- Requires carbide-tipped tools for machining due to work hardening.
Applications:
- Aerospace Industry: Jet engines, turbine seals, exhaust systems.
- Chemical Processing: Heat exchangers, reactors, condensers.
- Power Generation: Steam generators, boiler components.
- Marine Industry: Seawater piping, heat exchangers.
- Nuclear Industry: Reactor vessels, fuel element spacers.
- Food Processing: Equipment exposed to corrosive environments.