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Comprehensive Guide to Inconel 690: Pricing, Suppliers, and Specifications

Are you searching for the latest pricing details of Inconel 690 in India, or perhaps looking for reliable suppliers to source this versatile alloy? Whether you’re an industrial buyer, engineer, or procurement manager, understanding the market dynamics and specifications of Inconel 690 is crucial for making informed decisions. This high-performance alloy, known for its exceptional resistance to corrosion and high temperatures, is a staple in industries ranging from chemical processing to aerospace. In this comprehensive guide, we’ll delve into the current price trends, key suppliers in India, and the technical properties that make Inconel 690 a preferred choice. Ready to explore how Inconel 690 can meet your project needs? Let’s dive in.

Introduction to Inconel 690

Chemical Composition and Physical Properties

Inconel 690 is a high-chromium nickel alloy known for its exceptional resistance to oxidizing chemicals and high-temperature gases. Its composition primarily includes nickel (27.0-31.0%) and chromium (27.0-31.0%), with smaller quantities of iron, carbon, silicon, manganese, and sulfur. This combination gives the alloy its notable resistance to corrosive environments and high-temperature stability.

Mechanical Properties

At room temperature, Inconel 690 boasts a tensile strength of 690-738 N/mm², a yield strength of 334-372 N/mm², and an elongation range of 44-50%. These properties make it suitable for applications requiring both strength and flexibility.

Applications

The exceptional corrosion resistance and high-temperature stability of Inconel 690 make it ideal for various industrial applications:

  • Nitric Acid Production: Used in tail-gas reheaters.
  • Stainless Steel Pickling: Utilized in heating coils and tanks for acid solutions.
  • Nuclear Fuel Reprocessing: Employed in reprocessing equipment.
  • Coal-Gasification: Suitable for burners and ducts in sulfuric acid processing.
  • Petrochemical Processing: Applied in furnaces, recuperators, and incinerators.
  • Radioactive Waste Disposal: Used in glass vitrification equipment.
  • Nuclear Power Generation: Incorporated in steam generator tubes and related hardware.

Pricing

Prices for Inconel 690 generally start at around $40 per kg, with specific forms priced as follows:

  • Round bars and rods: $15-$25 per kg
  • Plates and sheets: $25-$35 per kg
  • Welding wire: $22-$29 per kg
  • Customized pipes: $40-$47 per kg

Suppliers and Specifications

Inconel 690 is widely available from suppliers like Rexton Steel & Alloys and Special Metals, in forms such as rods, bars, wires, plates, sheets, and welding products. These conform to standards like ASTM B166, ASME SB 166, and ISO 9723.

Pricing Dynamics and Influencing Factors in India

Current Market Prices of Inconel 690

Inconel 690 is a high-performance alloy often priced around INR 3500 per kg in India. This price can vary depending on the specific form of the material being purchased, such as pipes, tubes, coils, sheets, bars, and other fittings. The variation in pricing is often attributed to the processing required for each form and the demand for specific applications.

Factors Influencing Pricing

Several key factors influence the pricing dynamics of Inconel 690 in the Indian market:

Raw Material Costs

The alloying elements in Inconel 690, particularly nickel and chromium, have significant impacts on its price. Changes in global prices for these materials can lead to fluctuations in the cost of the alloy. For instance, any increase in nickel prices due to supply shortages or increased demand can raise the cost of Inconel 690.

Production Methods

The manufacturing processes employed to produce Inconel 690, such as forging, rolling, and welding, play a significant role in determining its cost. These processes require different levels of labor, energy, and equipment, contributing to the overall price. More intricate manufacturing methods can lead to higher prices.

Supply and Demand Dynamics

The price of Inconel 690 is influenced by the demand from industries like aerospace, chemical processing, and nuclear reactors, which can increase prices, while a surplus can lead to reductions.

Market Fluctuations

Global economic conditions, geopolitical events, and other market factors can create price volatility. For example, trade policies and tariffs affecting raw material imports can influence the cost structure of producing Inconel 690 in India.

Supplier Pricing Strategies

Different suppliers may offer varying prices for Inconel 690 based on their production capacities, logistical costs, and market positioning. Larger suppliers with greater economies of scale might provide more competitive pricing compared to smaller, niche providers.

Conclusion

The pricing of Inconel 690 in India is a complex interplay of material costs, production techniques, market forces, and supplier strategies. Understanding these factors helps buyers make informed decisions and anticipate price changes.

Leading Suppliers and Manufacturers in India

Dinesh Tube India

Dinesh Tube India specializes in supplying and exporting high-quality Inconel 690 products, including various types of tubes. Utilizing advanced technology and machinery, they offer competitive pricing and value-added services to cater to diverse customer needs.

Aesteiron Steels

Aesteiron Steels is a key supplier and exporter of Inconel 690 tubes and pipes, serving over 30,000 clients across 70 countries. They offer seamless and welded tubes in various sizes and lengths, along with detailed specifications and additional services such as drawing, expansion, bending, annealing, and machining, to meet a wide range of industrial applications.

Shree Mahavir Steel Mart

Shree Mahavir Steel Mart is recognized for its high-quality Inconel 690 products, including pipes, tubes, fittings, and other forms. They use high-grade raw materials and adhere to both Indian and international standards. Their extensive product range includes round bars, rods, strips, shims, flanges, and butt-weld fittings, which are widely used in high-temperature applications and environments exposed to nitric or hydrofluoric acid.

Pricing and Specifications

The pricing for Inconel 690 tubes and pipes generally ranges from $43,000 to $45,500 USD per ton, depending on the type (seamless, welded, or extruded seamless) and the supplier. Below is a summary of the pricing details:

Supplier Product Type Price (USD per ton)
Aesteiron Steels Seamless/Welded $43,000 – $45,000

Chemical Composition

Inconel 690 is a nickel-chromium-iron alloy with the following chemical composition:

  • Nickel: 58.0%
  • Chromium: 27.0-31.0%
  • Iron: 7.0-11.0%
  • Manganese:

Key Specifications and Industry Standards (ASTM B167, ASTM B168, ASTM B517)

Chemical Composition

Inconel 690, mainly made of nickel, chromium, and iron, is engineered for exceptional corrosion resistance and stability at high temperatures. Its chemical composition includes:

  • Nickel (Ni): Minimum 58.0%
  • Chromium (Cr): 27.0-31.0%
  • Iron (Fe): 7.0-11.0%
  • Carbon (C): ≤0.05%
  • Manganese (Mn): ≤0.5%
  • Copper (Cu): ≤0.5%
  • Silicon (Si): ≤0.5%
  • Sulfur (S): ≤0.015%
  • Phosphorus (P): ≤0.02%
  • Titanium (Ti): ≤0.5%
  • Aluminum (Al): ≤0.5%

Physical Properties

Inconel 690’s physical properties make it tough and reliable in challenging conditions:

  • Density: 8.2 g/cm³
  • Specific Heat Capacity: 450 J/kg·K
  • Thermal Conductivity: 12 W/m·K
  • Linear Expansion Coefficient: 14.3-17.3 μm/m·K
  • Electrical Resistivity: 1.15 µΩ·m
  • Melting Temperature: 1343-1377 °C

Mechanical Properties

Inconel 690 exhibits excellent mechanical properties, making it suitable for high-stress applications:

  • Yield Strength: ≥240 MPa at room temperature
  • Tensile Strength: ≥590 MPa at room temperature
  • Elongation: ≥30%

Its yield strength at high temperatures varies as follows:

  • 100°C: ≥236 MPa
  • 200°C: ≥228 MPa
  • 300°C: ≥220 MPa
  • 400°C: ≥216 MPa
  • 500°C: ≥210 MPa
  • 600°C: ≥200 MPa
  • 700°C: ≥156 MPa
  • 800°C: ≥120 MPa

Industry Standards

Inconel 690 adheres to several industry standards, ensuring its quality and reliability in various applications. Key standards include:

  • ASTM B167: Specifies requirements for nickel-chromium-iron alloys in the form of seamless pipe and tube.
  • ASTM B168: Relates to nickel-chromium-iron alloys in the form of sheet, strip, and plate.
  • ASTM B517: Outlines requirements for welded nickel-chromium-iron alloy pipes and tubes.

Applications

Thanks to its high-performance qualities, Inconel 690 is ideal for critical applications such as:

  • Nuclear Fuel Processing: Used in steam generators and other components in pressurized water reactors.
  • Chemical Processing: Ideal for tail-gas reheaters in nitric acid production and heating coils for acid solutions.
  • Energy Generation: Utilized in coal-gasification units and furnaces for petrochemical processing.
  • Environmental Engineering: Applied in incinerators and glass vitrification equipment for radioactive waste disposal.

Forms Available

Inconel 690 is available in various forms to meet diverse industrial requirements, including:

  • Sheets and Plates
  • Bars
  • Wire
  • Tubes and Pipes
  • Fittings
  • Forged/Cast Parts
  • Finished Parts

Compliance and Suppliers

Inconel 690 is supplied by various manufacturers, ensuring compliance with international standards. Notable suppliers include Solitaire Overseas and Fushun Special Steel, among others. These suppliers provide a range of products that meet stringent quality requirements and industry specifications.

Common Applications Across Industries

Applications of Inconel 690

Nuclear Power Generation

Inconel 690 is widely used in nuclear power plants because it resists corrosion and cracking in high-temperature water. This makes it essential for constructing steam generator tubes and other critical components, ensuring both safety and efficiency in nuclear reactors.

Chemical Processing

In the chemical industry, Inconel 690 is crucial for handling nitric and nitric/hydrofluoric acid solutions, especially in nitric acid production for tail-gas reheaters. It is also employed in heating coils and tanks for stainless steel pickling and nuclear fuel reprocessing, thanks to its excellent resistance to aggressive chemicals.

Petrochemical and Coal Gasification

In petrochemicals, Inconel 690’s resistance to sulfur gases makes it ideal for coal-gasification and sulfuric acid processing. Its use extends to burners, ducts, and furnaces, where it withstands corrosive and high-temperature environments. The alloy is also utilized in glass vitrification equipment for safe radioactive waste disposal.

Marine Applications

While not as common in marine use, Inconel 690’s high chromium content offers excellent saltwater resistance, ensuring marine components last longer and perform reliably. This makes it a valuable choice for specific marine environments where durability is crucial.

High-Temperature Environments

Inconel 690 is perfect for high-heat situations like recuperators and incinerators. Its ability to endure extreme temperatures while maintaining strength ensures these systems run smoothly and require less maintenance, enhancing their reliability and efficiency over time.

Guidelines for Purchasing Inconel 690 Sheets and Plates

Understanding Material Specifications

Understanding the specifications of Inconel 690 sheets and plates is essential to ensure they meet your needs. Pay attention to:

  • Chemical Composition: Verify the alloy’s composition, which typically includes high levels of nickel and chromium.
  • Physical Properties: Assess the density, thermal conductivity, and specific heat capacity.
  • Mechanical Properties: Ensure the material has the required yield strength, tensile strength, and elongation for your application.

Verifying Industry Standards

Ensure Inconel 690 complies with industry standards to guarantee its quality and suitability for high-stress and high-temperature environments, such as:

  • ASTM B167: For seamless nickel-chromium-iron alloy pipe and tube.
  • ASTM B168: For sheet, strip, and plate.
  • ASTM B517: For welded pipe and tube.

Selecting Reliable Suppliers

Select reputable suppliers who consistently deliver high-quality Inconel 690 sheets and plates. Consider:

  • Certifications: Ensure the supplier provides material test reports (MTC) and certifications like EN 10204 3.1 or 3.2.
  • Customization: Confirm the supplier can meet specific size and thickness requirements.
  • Quality Assurance: Look for suppliers with robust quality assurance plans and heat treatment charts.

Evaluating Pricing and Order Quantities

Consider bulk order discounts, the impact of hot vs. cold rolling processes, and current market conditions when evaluating pricing. These factors can significantly affect the overall cost.

Ensuring Proper Delivery and Packaging

Ensure the supplier uses standard packing methods and offers protective coatings to prevent damage during transit. Proper packaging is crucial to maintaining the integrity of the material.

Additional Services

Consider suppliers that offer additional services to meet your specific needs:

  • Cutting and Forming: Services such as cutting, forming, and drilling can save time and ensure precision.
  • Machining and Polishing: Suppliers that offer machining, grinding, and polishing can provide ready-to-use materials.
  • Post-Sales Support: Look for suppliers that provide post-sales support, including technical assistance and quick response times.

By following these guidelines, you can ensure that you purchase high-quality Inconel 690 sheets and plates that meet your specific needs and industry standards.

Frequently Asked Questions

Below are answers to some frequently asked questions:

What factors affect the price of Inconel 690 in India?

The price of Inconel 690 in India is influenced by several factors, including the cost of raw materials like nickel, which can fluctuate significantly. Market demand from industries such as oil and gas, as well as food processing, also plays a crucial role. Geopolitical factors and trade policies can affect supply chains, leading to price changes. Additionally, production costs, including labor and technology, impact pricing. Supplier efficiency, adherence to standards like ASTM B167, and the form of the product (e.g., sheets or tubes) further affect prices. Finally, distribution costs can add to the final price, depending on location and network reach.

Where can I buy Inconel 690 sheets and plates in India?

To purchase Inconel 690 sheets and plates in India, consider reputable suppliers like Shree Mahavir Steel Mart, Triton Alloys Inc., and Solitaire Overseas. Shree Mahavir Steel Mart offers a broad presence across major Indian cities and exports internationally. Triton Alloys Inc., based in Mumbai, is known for their high-quality hot-rolled and cold-rolled sheets. Solitaire Overseas, also located in Mumbai, provides Inconel 690 products adhering to international standards. These suppliers are recognized for their reliable products, excellent corrosion resistance, and high-temperature strength, making them suitable choices for acquiring Inconel 690 materials.

What are the industry standards for Inconel 690?

The industry standards for Inconel 690 include ASTM B167, which specifies requirements for seamless pipe and tube; ASTM B168 for sheet, strip, and plate; and ASTM B517 for welded pipe. These standards ensure the alloy meets specific chemical composition, mechanical properties, and physical properties, providing consistency and reliability for applications in high-temperature and corrosive environments, such as nuclear fuel processing and steam generators in pressurized water reactors.

In which industries is Inconel 690 most commonly used?

Inconel 690 is predominantly used in the nuclear power industry for components like steam generator tubes due to its exceptional corrosion resistance and stress-corrosion cracking resistance. It is also widely utilized in the chemical and petrochemical industries for handling corrosive media and high-temperature atmospheres, such as in nitric acid solutions and petrochemical processing furnaces. Additionally, its high-temperature stability makes it suitable for heat exchangers and high-temperature applications, including waste incineration and environmental applications, where its resistance to high-temperature corrosive environments is beneficial. These industries leverage Inconel 690’s superior properties for enhanced performance and durability.

How do I ensure the quality of Inconel 690 when purchasing?

To ensure the quality of Inconel 690 when purchasing, verify that the material meets industry standards like UNS N06690 and ASTM specifications. Conduct thorough chemical and mechanical testing to confirm the composition and properties such as tensile strength and yield strength. Utilize both non-destructive and destructive testing methods to detect any defects. Choose reputable suppliers with ISO certification and a strong track record. Ensure the manufacturing process uses advanced technology and includes stage-wise inspections by certified agencies. Finally, obtain necessary certifications and ensure proper packaging to prevent damage during shipping.

What is the current price of Inconel 690 in India?

As of the latest available data, the current price of Inconel 690 in India is approximately INR 3000 per kilogram. This price is relatively consistent across various suppliers in the country.

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