ASTM B166 Inconel 690 wire is a premium nickel-chromium alloy engineered for industries where extreme corrosion resistance, high-temperature stability, and long-term reliability are essential. At DLX, we supply Inconel 690 wire optimized for power plants, chemical processing facilities, and industrial heat exchangers, delivering exceptional performance in harsh environments.
Inconel 690 is composed primarily of nickel and chromium, with small amounts of iron and other elements. Nickel ensures corrosion resistance and high-temperature stability, while chromium enhances oxidation resistance and prevents stress corrosion cracking. This alloy is specifically designed for applications where traditional stainless steels or nickel alloys may fail, providing a long service life even under high-stress, high-temperature conditions.
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In power generation, Inconel 690 wire is used extensively for steam generator tubing, turbine components, and heat exchangers. Its high oxidation resistance and structural integrity under thermal stress make it a preferred choice for boilers and high-pressure piping systems.
In chemical processing, Inconel 690 wire performs reliably in oxidizing, reducing, and mildly carburizing environments. It is used in reactors, pumps, valves, and piping systems where long-term corrosion resistance is critical. The wire’s ability to withstand aggressive chemical environments reduces maintenance frequency and improves plant reliability.
Industrial Heat Exchangers and High-Temperature Applications
Industrial heat exchangers benefit from Inconel 690 wire’s stability under prolonged exposure to high temperatures and corrosive atmospheres. The alloy maintains its mechanical properties, minimizing deformation and failure. This reliability reduces downtime and operational costs while ensuring consistent performance across cycles.
Item | Inconel 600 | Inconel 825 | ||||||
C | ≤0.15 | ≤0.1 | 0.05-0.15 | ≤0.08 | ≤0.05 | ≤0.08 | ≤0.08 | ≤0.05 |
Mn | ≤1 | ≤1.5 | ≤0.5 | ≤0.35 | ≤0.5 | ≤0.35 | ≤1 | ≤1 |
Fe | 6-10 | rest | ≤3 | rest | 7-11 | rest | 5-9 | ≥22 |
P | ≤0.015 | ≤0.02 | ≤0.015 | -- | -- | -- | -- | -- |
S | ≤0.015 | ≤0.015 | ≤0.015 | ≤0.015 | ≤0.015 | ≤0.01 | ≤0.01 | ≤0.03 |
Si | ≤0.5 | ≤0.5 | ≤0.5 | ≤0.35 | ≤0.5 | ≤0.35 | ≤0.5 | ≤0.5 |
Cu | ≤0.5 | ≤1 | -- | ≤0.3 | ≤0.5 | ≤0.3 | ≤0.5 | 1.5-3 |
Ni | ≥72 | 58-63 | ≥44.5 | 50-55 | ≥58 | 50-55 | ≥70 | 38-46 |
Co | -- | -- | 10-15 | ≤10 | -- | ≤1 | ≤1 | -- |
Al | -- | 1-1.7 | 0.8-1.5 | ≤0.8 | -- | 0.2-0.8 | 0.4-1 | ≤0.2 |
Ti | -- | -- | ≤0.6 | ≤1.15 | -- | -- | 2.25-2.75 | 0.6-1.2 |
Cr | 14-17 | 21-25 | 20-24 | 17-21 | 27-31 | 17-21 | 14-17 | 19.5-23.5 |
Nb+Ta | -- | -- | -- | 4.75-5.5 | -- | 4.75-5.5 | 0.7-1.2 | -- |
Mo | -- | -- | 8-10 | 2.8-3.3 | -- | 2.8-3.3 | -- | 2.5-3.5 |
B | -- | -- | ≤0.006 | -- | -- | -- | -- | -- |
Shape | Size (mm) |
Wire | 0.02-7.50 |
Rod/Bar | 8.0-200 |
Strip | (0.5-2.5)*(5-180) |
Tube/Pipe | Customized |
Sheet/Plate | Customized |
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DLX provides Inconel 690 wire with unmatched quality and performance, offering several advantages:
Stringent Quality Control – Each wire batch undergoes chemical and mechanical testing to meet ASTM B166 and UNS N06690 standards.
Customizable Options – DLX supplies wire in various diameters, coil sizes, and straight lengths to meet project-specific requirements.
Enhanced Durability – Optimized manufacturing processes ensure long-term oxidation and corrosion resistance.
Reliable Supply – Adequate stock levels and efficient logistics guarantee timely delivery for uninterrupted operations.
Industry Trends and Insights
The high-temperature corrosion-resistant alloy market is expanding due to increased energy demands, stricter safety standards, and growth in chemical processing and power generation sectors. Alloys like Inconel 690 are becoming increasingly critical for long-term reliability and reduced maintenance costs. DLX stays ahead of these trends with advanced production technology and rigorous quality assurance.
ASTM B166 Inconel 690 Wire – Technical Comparison Table
| Property | Value/Range | Notes |
|---|---|---|
| Standard | ASTM B166 / UNS N06690 | Standard for nickel-chromium corrosion-resistant alloys |
| Composition | Ni 58%, Cr 28%, Fe 10%, Others | Typical alloy composition |
| Density | 8.2 g/cm³ | |
| Melting Point | 1,350 – 1,375°C | High thermal stability |
| Tensile Strength | 690 – 950 MPa | Maintains strength at elevated temperatures |
| Elongation | 25 – 40% | Good ductility |
| Service Temperature | Up to 1,000°C | Excellent oxidation and corrosion resistance |
| Form | Wire, coil, straight | Diameter 0.1 – 12 mm |
| Corrosion Resistance | Excellent | Resistant to stress corrosion cracking, oxidizing and reducing environments |
| Welding | TIG, MIG, Resistance | Suitable for high-temperature fabrication |
Inconel 690 wire is compatible with TIG, MIG, and resistance welding and can be drawn, bent, or formed into precise geometries. Proper storage in a clean, dry environment and careful handling are essential to preserve the wire’s corrosion-resistant properties and mechanical strength. DLX offers technical guidance for fabrication to ensure optimal performance throughout the product lifecycle.
Comparative Performance
Inconel 690 outperforms many conventional nickel alloys and stainless steels in high-temperature corrosion resistance, particularly against oxidizing and reducing atmospheres. Its excellent resistance to stress corrosion cracking makes it ideal for critical applications in power and chemical plants. DLX guarantees that every wire meets or exceeds ASTM B166 specifications, ensuring consistent performance and reliability.
DLX clients in power generation and chemical industries report longer service life, reduced maintenance, and reliable performance under harsh operating conditions. Our Inconel 690 wire contributes to operational efficiency and reduced downtime. Additionally, DLX supports clients in selecting the appropriate alloy for specific chemical and thermal environments, ensuring optimal material performance.
As industries seek higher efficiency, increased reliability, and longer component lifespans, demand for high-performance alloys like Inconel 690 will continue to grow. DLX is ready to meet this demand with precision manufacturing, quality assurance, and expert technical support, providing clients with reliable materials for critical applications.
ASTM B166 Inconel 690 wire is a high-performance nickel-chromium alloy ideal for power plants, chemical processing, and industrial heat exchangers. DLX provides precision-manufactured wire with exceptional oxidation resistance, corrosion resistance, and mechanical durability. From steam generators to chemical reactors, our Inconel 690 wire ensures reliable operation, long-term performance, and reduced maintenance costs.
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
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1. What is ASTM B166 Inconel 690 wire?
Inconel 690 wire is a nickel-chromium alloy with exceptional oxidation and corrosion resistance. It is engineered for high-temperature and aggressive chemical environments, making it ideal for power generation and chemical plants.
2. Which industries use Inconel 690 wire?
It’s widely used in power plants, chemical processing, petrochemical industries, and industrial heat exchangers where long-term stability under corrosive conditions is required.
3. What are its main material properties?
The wire offers high tensile strength, excellent resistance to oxidation and stress corrosion cracking, and maintains mechanical integrity at temperatures up to 1,000°C.
4. What sizes and forms are available?
DLX supplies Inconel 690 wire in coils, straight lengths, and custom cut-to-size pieces, with diameters ranging from 0.1 mm to 12 mm.
5. Can Inconel 690 wire be welded or fabricated?
Yes. The wire can be welded using TIG, MIG, or resistance welding methods. It can also be bent, drawn, or formed for specific applications.
6. How does Inconel 690 compare to other high-temperature alloys?
Inconel 690 outperforms many stainless steels and nickel alloys in corrosion resistance, particularly against high-temperature oxidizing and reducing environments, and offers excellent long-term mechanical stability.
7. What are typical applications?
Applications include steam generator tubing, heat exchanger components, chemical reactors, high-temperature fasteners, and power plant piping.
8. How should it be stored and handled?
Store in a clean, dry environment to prevent contamination or oxidation. Avoid sharp bends or mechanical damage to maintain its high-temperature performance and corrosion resistance.