Inconel 690 Factory

Gnee specializes in providing quality assured Inconel 690 with full material certifications. We supply Inconel 690 plates, coils, tubes, bars, etc. All products meet ASTM standards and have a complete quality assurance system and certification. Factory price, free samples available!

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UNS N06690
Prime Nickel-Chromium Alloy
Welding-Friendly Alloy 690
Inconel 690 Supplier
Long Service Life Material
Plates | Bars | Tubes | Fittings
One-Stop Service
Cut & Weld & Customize
Custom Inconel 690 Solutions
Fast Delivery & Logistics
500 Tons in Stock
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Inconel 690 Manufacturer

Gnee specializes in producing a wide variety of Inconel 690 high-temperature alloy forms, offering a wide range of product shapes, including plates, bars, tubes, wire, strip, and forgings. These products comply with international standards such as ASTM B167 and ASTM B168, and are suitable for demanding manufacturing processes such as heat treatment, cold forming, machining, and welding.

Leveraging years of industry experience, Gnee’s alloy 690 products are widely used in core equipment in nuclear power generation, chemical processing, and environmental emission reduction. We are committed to providing highly flexible and customized services. Whether you require non-standard dimensions, special tolerances, specific heat treatment conditions, or unique performance requirements, our technical team can work closely with you to provide a comprehensive solution, from material selection to technical support.

Payment method and term

Wire transfer and letter of credit

Supply Ability

Up to 800 tons per month

Customization

Supports custom sizes, cutting, welding, and surface treatment

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We have rich inconel 690 Shapes in stock

Gnee is a leading manufacturer and global supplier of high-performance materials. We supply custom-sized Inconel 690 plates, bars, and tubes, etc, meeting strict international quality standards. Supply full quality assurance system, and we maintain extensive inventory for quick delivery of various Inconel 690 product forms.

Basic Information Of Inconel 690 Product

The following is the product specifications of Inconel alloy 690. If you need other more information, please contact us.

Description

Inconel 690 has excellent resistance to high temperature oxidation and chloride corrosion, especially in harsh environments such as those common in chemical processing, petrochemicals and power generation. The alloy maintains its mechanical properties at temperatures up to 1100°C and does not oxidize or corrode significantly at extreme temperatures. Inconel N06690 also has good mechanical strength, toughness and weldability. Its high chromium content not only provides excellent oxidation resistance, but also gives it resistance to fluoride and high temperature water vapor corrosion.

UNS N06690 Inconel alloy 690 Product Parameters

PropertyInconel 690
FormsPlates, Bars, Sheets, Pipes, Forged Components
Manufacturing ProcessHot Rolling, Cold Rolling, Forging, Welding
Density8.47 g/cm³
Tensile Strength758 MPa (110 ksi)
Yield Strength310 MPa (45 ksi)
Elongation30% (in 50 mm gauge length)
Hardness170 HB
Operating TemperatureUp to 1050°C (1922°F)
Corrosion ResistanceExcellent resistance to oxidation and carburization
ApplicationsHeat exchangers, gas turbines, nuclear power plants
ServiceCustom processing, Cutting, Welding, Heat Treatment

What ASTM standards of Inconel Alloy 690 can Gnee produce?

ASTM StandardDescription
ASTM B167Standard Specification for Inconel 690 Bars and Forgings
ASTM B168Standard Specification for Inconel 690 Plate, Sheet, and Strip
ASTM B517Standard Specification for Inconel 690 Seamless Pipe and Tube
ASTM B366Standard Specification for Inconel 690 Fittings (Elbows, Tees, etc.)
ASTM B625Standard Specification for Inconel 690 Welded Pipe

Aolly 690 Equivalent grades

STANDARDUNSENWERKSTOFF NR.
Inconel 690N066902.46422.4642

Parameter Information

Chemical Parameters

ElementInconel 690
Nickel (Ni)58.0-63.0%
Chromium (Cr)27.0-31.0%
Iron (Fe)Balance
Manganese (Mn)0.50% max
Silicon (Si)0.50% max
Copper (Cu)0.50% max
Carbon (C)0.05% max
Sulfur (S)0.015% max
Aluminum (Al)0.05-0.40%
Titanium (Ti)0.20-0.50%

Mechanical Properties

PropertyInconel 690
Tensile Strength (MPa)620
Yield Strength 0.2% Offset (MPa)275
Elongation (% in 50mm)30
Hardness (Rockwell B)90 max

Physical Property

PropertyInconel 690
Density (g/cm³)8.19
Melting Range (°C)1330-1370
Specific Heat Capacity (J/kg·K)427
Thermal Conductivity (W/m·K)13
Electrical Resistivity (µΩ·m)1.11

Size Chart Of Inconel 690

Gnee factory offers processing services. Please contact us if you have any processing needs.

Inconel 690 Plates/Sheets Size

TypeThickness (mm / in)Width (mm / in)Length (mm / in)
Cold Rolled0.1 – 7 (0.004 – 0.28)1000 – 2500 (39 – 98)≤ 5500 (≤ 217)
Hot Rolled3 – 100 (0.12 – 3.94)1000 – 2500 (39 – 98)≤ 12000 (≤ 472)
Strip/Thin Plate0.2 – 350 (0.008 – 13.78)4 – 750 (0.16 – 29.5)Coil form, inner diameter 300-600 (11.8-23.6)

Inconel 690 Tubes/Pipes Size

TypeOuter Diameter (mm)Wall Thickness (mm)Length (m)
Seamless/Welded1 – 4000.2 – 20Single or custom (Single Random/Double Random)
Precision Tube4 – 4000.5 – 10≤ 12

Inconel 690 Bars/Rods Size

TypeDiameter (mm / in)Length (mm / in)
Round Bar/Rod6 – 800 (0.24 – 31.5)1500 – 12000 (59 – 472)
Flat/Hex Bar8 – 3201500 – 6000

Inconel 690 Wires Size

TypeDiameter (mm / in)Form
Drawn Wire0.16 – 10 (0.006 – 0.39)Coil, spool or container
Hot Rolled Wire5.5 – 19 (0.22 – 0.75)Coil or cut lengths
Welding/Spring Wire0.5 – 12 (0.02 – 0.47)Coil or cut lengths

What are the features of Inconel 690?

Inconel 690 alloy offers good machinability, weldability, and excellent corrosion resistance, ensuring long-term reliability.

waste treatment industries

Excellent corrosion and high temperature resistance

  • Inconel 690, with its high chromium content, can form a dense protective film. It not only has excellent high-temperature oxidation resistance, but also exhibits outstanding resistance to stress corrosion cracking in sensitive environments such as chloride ions and caustic soda. At the same time, it has good tolerance to a variety of acids, alkalis and sulfur-containing atmospheres.
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Excellent comprehensive mechanical properties

  • In the annealed state, its typical tensile strength can reach about 550-750 MPa, and its yield strength is about 260-420 MPa. At the same time, its elongation can be maintained above 25%. Therefore, the material is both strong and has a certain deformation capacity. In the medium and high temperature range of 600°C to 800°C, it can still maintain a high level of strength.
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Gas turbine blades
welding adaptability

Good processing and welding adaptability

  • Alloy 690 has good weldability and can be welded with matching welding materials (such as ERNiCrFe-7 welding wire). It can be hot-worked and cold-worked. We provide complete processing support and services, and offer a full range of sizes and specifications.
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Application Of Inconel 690 Products

After decades of verification, Gnee has a mature production process, and Inconel 690 has been supplied to the following industries around the world

Aircraft engine parts

Inconel 690 Plate/sheet

Nuclear power, chemical vessels, aerospace industries

  • Nuclear reactor pressure vessel linings
  • Chemical towers and tanks
  • Gas turbine combustor components
Inconel high strength pump shafts

inconel 690 bar/rod

General mechanical components, chemical and energy

  • High-strength pump shafts and valve stems
  • Nuclear fuel assemblies
  • Fasteners
Inconel 690 Corrosive liquid gas pipelines

inconel 690 tube/pipe

Nuclear power, chemical, petroleum, and power industries

  • Corrosive liquid/gas pipelines
  • Chemical heat exchangers and piping
  • Petroleum refining heaters
Inconel 690 welding wire

inconel 690 wire

Filtration, welding, and other special applications

  • High-temperature filters
  • Welding wire
  • Springs

Gnee Alloys-nickel alloy Rich Grades For Sale

In addition to Inconel 690, we can also provide the following grades of nickel-based alloys

  • Inconel 690 (UNS N06690, EN 2.4642)
  • Inconel 725 (UNS N07725, EN 2.4959)
  • Inconel X-750 (UNS N07750, EN 2.4669)
  • Inconel 617 (UNS N06617, EN 2.4663)
  • Inconel 693 (UNS N06693)
  • Inconel 738 (UNS N07738)
  • Hastelloy G-30 (UNS N06030, EN 2.4603)
  • Hastelloy G-35 (UNS N06035)
  • Hastelloy X (UNS N06002, EN 2.4665)
  • Incoloy 330 (UNS N08330, EN 1.4886)
  • Incoloy 25-6Mo (UNS N08926, EN 1.4529)
Some Hot-Selling Alloys Are Displayed

FAQ

Below are some frequently asked questions about Inconel Alloy 690. If you have any other questions, please feel free to contact us.

No, Inconel 625 is a non-magnetic material.
Its matrix is ​​an austenitic nickel-chromium structure (nickel ≥ 58%, chromium 20-23%), with no ferromagnetic phase transition

Post-weld stress relief: A 1-hour hold at 300-400°C is recommended to reduce weld residual stresses, especially for thick-walled components.
Resolution treatment: If welding causes coarsening of the grains in the heat-affected zone (HAZ), resolution treatment is necessary to restore corrosion resistance.

Pickling: Removes scale and improves corrosion resistance.

Passivation: Forms a protective chromium oxide film, enhancing resistance to contamination.

Coating: Spraying a ceramic coating (such as Al₂O₃) can further enhance high-temperature oxidation resistance.

Specific analysis of the operating conditions is required. Inconel 690 performs well in oxidizing media and high-temperature, high-pressure water environments. However, it is not suitable for use in strongly reducing acid environments and may not perform as well as other alloys in certain high-temperature chloride environments. It cannot be simply considered a universal replacement; its performance must be determined based on the specific media composition, temperature, and pressure conditions.

Solution treatment: Hold at 1000-1150°C, followed by rapid cooling to achieve a uniform austenitic structure.
Aging treatment: Hold at 700-900°C for 2-10 hours to induce γ’ phase precipitation and enhance high-temperature creep resistance.

Inconel 718

Custom orders are welcome

Gnee, a trusted China-based nickel alloy manufacturer since 2008, delivers precision-engineered nickel alloy pipe solutions tailored to your industrial requirements. We offer fully customizable specifications including diameters (6mm to 2000mm), wall thickness (0.5mm to 50mm), and lengths (up to 18m), working with premium materials like Inconel®, Hastelloy®, and Monel®.
Our in-house metallurgists utilize advanced hot extrusion and cold drawing techniques to meet ASTM/ASME/DIN standards, complete with EN 10204 3.1 certification and full traceability. Partner with us for seamless customization from prototype to bulk production with 30-60 day lead times.
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Why Choose Gnee?

Rich Inventory

Nickel Alloy Inventory

Gnee maintains a rich inventory of high-performance nickel alloys, including Inconel, Incoloy, Hastelloy, Monel, and Stainless Steel Alloy grades. Our extensive stock ensures that we can meet the immediate needs of our customers, offering a wide range of sizes, forms, and specifications, from plates and bars to tubes and fittings. With quick access to critical materials, we minimize lead times and provide fast, reliable solutions

Secure Packaging

Our export packaging complies with international standards for shipping and handling, ensuring the safe delivery of nickel alloys to various countries.

Common packaging methods

  • Pallet packaging: Plates and sheets are usually placed on pallets for added stability
  • Bundle packaging: Rods and tubes are often bundled together and secured with steel straps or high-strength straps
  • Crate packaging: Wooden crates offer good protection and stability
  • Foam protection packaging: Small accessories are often individually wrapped with foam
  • Reel packaging: Wire is usually rolled into a round reel and wrapped with anti-corrosion material

In addition, if you have special requirements for packaging methods, we provide customized services to meet your personalized needs. Whether it is additional protection measures or special packaging materials, we can adjust according to your specific requirements. Our goal is to ensure that your goods arrive at their destination safely and intact.

Special customized packaging

  • Size customization: Design special brackets or reinforcement materials for extra-long steel and special-shaped steel.
  • Environmentally friendly packaging: Use degradable or recyclable packaging materials to meet customers’ green environmental protection requirements.
  • Brand logo: Provide customers with packaging with company logos or special marks to facilitate brand identification and logistics management.
  • Special protection: Such as adding shock-proof cushions or built-in pressure-resistant brackets for packaging of precision steel or high value-added products.

export to 70+ countries

Gnee steel products have been exported to many countries and regions, including:

  • Asia: Such as Japan, India, South Korea, Singapore, Malaysia, Thailand
  • Middle East: Such as United Arab Emirates, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain
  • Africa: Such as South Africa, Egypt, Nigeria, Kenya, Algeria, Morocco
  • America: Such as Canada, Mexico, Brazil, Argentina, Chile
  • Europe: Such as Germany, United Kingdom, France, Italy, Spain, Russia, Poland

No matter where the customer is located, Gnee can respond quickly with a complete logistics network.

Testing Services

We ensure the quality and performance of our nickel alloy products through the following testing services:

  • Chemical Composition Analysis
  • Mechanical Properties Testing
  • Hardness Testing
  • Non-Destructive Testing (NDT)
  • Dimensional Inspection
  • Visual Surface Inspection
  • Corrosion Resistance Evaluation
  • Test Report

Processing Services

We understand that every project has unique requirements. To support our customers, we offer a range of practical and efficient processing services for nickel alloy products, including:

  • Cutting Services: such as laser cutting, plasma cutting or water jet cutting, etc.
  • Sheet Metal Processing: such as stamping, bending, shearing
  • Welding Services: such as TIG welding, MIG welding, electron beam welding, etc.
  • Surface Treatment: such as polishing, electroplating, sandblasting, etc.
  • Heat Treatment: including annealing, quenching, tempering, etc.
  • Customized Processing: According to the specific needs of customers, we provide customized nickel alloy processing services, including customization in shape, size, thickness, etc.