INCONEL 686 Rod for Extreme Corrosion Resistance in Chemical, Marine, and Waste Treatment Systems
INCONEL 686 rods are engineered to provide exceptional resistance to a wide range of severe environments, making them ideal for industries requiring robust performance in aggressive conditions. This nickel-chromium-molybdenum-tungsten alloy offers outstanding protection against both reducing and oxidizing agents, ensuring longevity and reliability in critical applications.
Chemical Composition of INCONEL 686 Rods:
| Element |
Composition (%) |
| Nickel (Ni) |
Balance |
| Chromium (Cr) |
19.0 - 23.0 |
| Molybdenum (Mo) |
15.0 - 17.0 |
| Tungsten (W) |
3.0 - 4.4 |
| Iron (Fe) |
≤ 2.0 |
| Cobalt (Co) |
≤ 1.0 |
| Manganese (Mn) |
≤ 0.75 |
| Silicon (Si) |
≤ 0.08 |
| Carbon (C) |
≤ 0.01 |
| Phosphorus (P) |
≤ 0.04 |
| Sulfur (S) |
≤ 0.02 |
Mechanical Properties:
| Property |
Value |
| Tensile Strength |
≥ 760 MPa (110 ksi) |
| Yield Strength (0.2% offset) |
≥ 345 MPa (50 ksi) |
| Elongation |
≥ 65% |
| Hardness (Brinell) |
200-250 |
Physical Properties:
| Property |
Value |
| Density |
8.73 g/cm³ |
| Melting Range |
1338–1380°C |
| Electrical Resistivity |
1.237 µΩ·m |
| Thermal Conductivity |
0.098 W/cm•K |
Applications of INCONEL 686 Rods:
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Chemical Processing: Ideal for equipment exposed to harsh chemicals, providing durability and resistance to corrosion.
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Pollution Control: Suitable for components in systems managing aggressive environmental pollutants.
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Pulp and Paper Industry: Used in digesters and bleach plants where resistance to acidic and alkaline environments is crucial.
-
Waste Treatment: Applicable in handling and processing equipment for hazardous waste materials.
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Marine Engineering: Offers excellent resistance to seawater corrosion, making it suitable for offshore and naval applications.
Frequently Asked Questions (FAQs):
Q1: What makes INCONEL 686 rods superior in corrosion resistance?
A1: The unique combination of nickel, chromium, molybdenum, and tungsten provides exceptional resistance to both reducing and oxidizing environments, effectively combating pitting, crevice corrosion, and stress-corrosion cracking.
Q2: Can INCONEL 686 rods be used in high-temperature applications?
A2: Yes, INCONEL 686 maintains its mechanical properties and corrosion resistance at elevated temperatures, making it suitable for high-temperature environments.
Q3: Are these rods weldable?
A3: Absolutely. INCONEL 686 rods exhibit good weldability, and low carbon content minimizes grain boundary precipitation, preserving corrosion resistance in welded joints.
Q4: In which forms are INCONEL 686 materials available?
A4: Besides rods, INCONEL 686 is available in sheets, plates, bars, wire, tubes, pipes, fittings, and forgings, catering to various industrial needs.
Q5: What standards do INCONEL 686 rods comply with?
A5: They adhere to international standards such as ASTM B462, ASTM B564, ASTM B574, ASTM B575, ASTM B619/B622, and ASTM B366, ensuring quality and consistency.
INCONEL® 686 rods are the material of choice for industries demanding superior corrosion resistance and mechanical performance in challenging environments.
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686 Inconel Alloy Rod For Corrosion Resistance In Chemical Marine Waste Treatment Systems Images
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