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Introduction to Inconel 625

Inconel 625 is a high-performance nickel-chromium-based alloy known for its possession of high strength properties as well as its high resistance to corrosion, oxidation, and high temperatures. This alloy performs remarkably well in harsh environments, such as those with extreme temperatures or exposure to aggressive chemicals. Its excellent properties make it a common choice for applications in industries like offshore, oil and gas, maritime, and chemical processing. However, while it offers great protection, modern laser cladding technologies as offered by Topclad, provide even more targeted, durable solutions for component protection.

What is Inconel 625?

Inconel 625 is an alloy primarily composed of nickel and chromium, combined with elements like molybdenum and niobium, which together give the alloy its resistance to corrosion and oxidation. This combination allows Inconel 625 to maintain its structural integrity and performance in extremely harsh conditions, including high temperatures and aggressive chemical environments. Its non-reactive nature also makes it a solid choice for high-stress applications, particularly where both corrosion and mechanical stress are present.

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Inconel 625: Key Benefits & Disadvantages

Benefits:

  • Corrosion Resistance: Inconel 625 stands out for its ability to resist corrosion, even in environments with saltwater exposure and chemical attacks.
  • High Temperature Performance: It can withstand extreme temperatures, maintaining its strength and integrity at both high and low temperatures.
  • Oxidation Resistance: The alloy’s resistance to oxidation makes it particularly useful for components exposed to high-temperature combustion environments.
  • Durability: Excellent fatigue and creep resistance, making it a strong material for demanding applications.

Disadvantages:

  • Cost: Inconel 625 is more expensive than many other materials due to its complex composition and the costs associated with its production.
  • Machining Challenges: The toughness of Inconel 625 makes it more difficult to machine, requiring specialized tools and processes.
Upgrade to Quarite NLooking for better quality in the product? Choose our Quarite series and get the most out of our products!More about Quarite N
Specification
Value
Corrosion
A high score on the PREN (Pitting Resistance Equivalent Number) indicates a high corrosion resistance
48
Wear
A low score on the ASTM G65 test indicates a high wear resistance
87mm³
Ductility
Very high
Impact resistance
+++
Price index
The price index indicates the relative price where the price of Sinex has been set at 100%. Actual prices are dependent on a variety of factors such as: product dimensions, tolerances, layer thickness, etc.
110

What is Inconel 625 used for?

Inconel 625 vs 718: What’s the difference?

Both Inconel 625 and Inconel 718 are nickel-based alloys, but their compositions and applications differ. Inconel 625 contains higher amounts of molybdenum and niobium, providing superior resistance to corrosion and oxidation, making it more suitable for seawater and chemical exposure. In contrast, Inconel 718 has higher tensile strength and is often used in high-temperature applications where strength and creep resistance are critical, such as aerospace. While both alloys are highly durable, Inconel 625 is the better choice for corrosion resistance, while Inconel 718 excels in mechanical strength and heat resistance at extremely high temperatures.

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Topclad laser cladding as an alternative to Inconel 625

Topclad’s laser cladding technology offers an innovative and cost-effective alternative to traditional coatings like Inconel 625. Laser cladding allows for precise, targeted protection that enhances the lifespan of components by reducing wear and corrosion in specific areas that experience the most stress. This tailored approach not only optimizes the protection of critical components but also reduces overall maintenance costs and downtime.

For industries demanding long-term protection in highly corrosive environments, Topclad’s Quarite and Tardisphere series offer superior corrosion and wear resistance to Inconel 625—all while being a more economical and durable solution.

Explore our laser cladding applications and advantages to discover how we can enhance the longevity of your equipment.

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Other products in this serie

Product
Corrosion
A high score on the PREN (Pitting Resistance Equivalent Number) indicates a high corrosion resistance
Wear
A low score on the ASTM G65 test indicates a high wear resistance
Ductility
Impact resistance
Price index
The price index indicates the relative price where the price of Sinex has been set at 100%. Actual prices are dependent on a variety of factors such as: product dimensions, tolerances, layer thickness, etc.
AluBronze
Aluminium bronze is a highly durable alloy, known for its excellent corrosion resistance and outstanding sliding properties
N.A.Corrosion
A high score on the PREN (Pitting Resistance Equivalent Number) indicates a high corrosion resistance
Depending on applicationWear
A low score on the ASTM G65 test indicates a high wear resistance
HighDuctility
+Impact resistance
130Price index
The price index indicates the relative price where the price of Sinex has been set at 100%. Actual prices are dependent on a variety of factors such as: product dimensions, tolerances, layer thickness, etc.
Inconel 625
A high-performance nickel-chromium-based alloy known for its high strength properties and resistance to corrosion, oxidation, and high temperatures.
48Corrosion
A high score on the PREN (Pitting Resistance Equivalent Number) indicates a high corrosion resistance
87mm³Wear
A low score on the ASTM G65 test indicates a high wear resistance
Very highDuctility
+++Impact resistance
110Price index
The price index indicates the relative price where the price of Sinex has been set at 100%. Actual prices are dependent on a variety of factors such as: product dimensions, tolerances, layer thickness, etc.
Stainless Steel 316
Stainless Steel 316 is a versatile and durable alloy known for its corrosion resistance, particularly in harsh environments
22Corrosion
A high score on the PREN (Pitting Resistance Equivalent Number) indicates a high corrosion resistance
96mm³Wear
A low score on the ASTM G65 test indicates a high wear resistance
HighDuctility
+++Impact resistance
110Price index
The price index indicates the relative price where the price of Sinex has been set at 100%. Actual prices are dependent on a variety of factors such as: product dimensions, tolerances, layer thickness, etc.
Stellite
This cobalt-chromium alloy is known for its hardness, corrosion resistance, and ability to maintain performance in challenging environments.
30Corrosion
A high score on the PREN (Pitting Resistance Equivalent Number) indicates a high corrosion resistance
94mm³Wear
A low score on the ASTM G65 test indicates a high wear resistance
HighDuctility
+++Impact resistance
150Price index
The price index indicates the relative price where the price of Sinex has been set at 100%. Actual prices are dependent on a variety of factors such as: product dimensions, tolerances, layer thickness, etc.

Examples of markets and applications

Inconel 625 is often applied in these markets and applications

Hydraulic Cylinder Rods

Hydraulic Cylinder Rods

Traditional coatings like nickel-chrome plating not only present sub-corrosion risks but are also brittle, leading to cracking and peeling under bending, vibrations, or impact. In contrast, laser cladding provides high ductility, enabling flexibility without cracking, even under mechanical stress.  This makes laser cladding especially suited for longer cylinder rods, where bending is more prevalent. Moreover, our repair solutions can restore damaged rods with thicker layers of multiple millimeters, without compromising on flexibility or resistance to impact—issues that commonly affect traditional coatings.  Depending on the application and operating conditions, we offer a range of solutions from the Quarite- and Tardisphere-series, designed for maximum protection against wear, corrosion, and impact.  We recommend selecting the appropriate layer based on the specific demands of your environment. For instance, Quarite NR+ provides outstanding protection in environments with high corrosion risks, while Tardisphere offers high strong corrosion resistance as well, with the added benefit of superior abrasion resistance and impact protection, making it ideal for environments with abrasive materials. Learn more about the Quarite-series here.  Make your machines more reliable with laser cladding  Laser cladding provides significant improvements to the durability and performance of hydraulic cylinders. Whether it’s the repair of damaged rods or the application of new cladding layers, Topclad ensures your machinery runs more efficiently with less downtime and longer lifespans. Ready to strengthen your equipment? Request a quote today and let Topclad help you enhance the reliability and longevity of your machines. 
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Machine Parts

Machine Parts

Repair worn out machine parts in Lelystad, the Netherlands  For reliable machine part repairs, Topclad is the trusted partner across industries. With over 14 years of experience, we are equipped to restore everything from standard-sized parts to oversized components. Our laser cladding technology ensures that even the most severely worn parts are rejuvenated with precision, bringing them back to optimal functionality.   At Topclad, we not only restore worn parts but also enhance them to perform better than before. Our expert team ensures that all repairs are completed with attention to detail, using advanced materials to withstand the harshest conditions. This enables businesses to reduce downtime, save on operational costs, and achieve greater equipment reliability. 
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Food processing

Food processing

Laser cladding solutions Topclad’s laser cladding technology is ideal for food processing equipment due to its ability to create a metallurgical bond, which eliminates the risk of peeling, as can happen with traditional coatings like NiCr. These traditional coatings are prone to porosity, sub-corrosion, and peeling, whereas laser cladding provide a dense, pore-free structure with high ductility maintaining its structural integrity. This is crucial for components in the food industry as it prevents blisters or any other deterioration ending up in the food and ensuring longer operational life of equipment. Quarite N is particularly suited for the food industry, providing exceptional protection against corrosion, especially from chemical exposure. Additionally, Topclad’s laser cladding technology can providee a cost-economic alternative to solid Stainless Steel 316 components by applying a laser-clad SS316 layer on more affordable base materials like carbon steel. This approach achieves equal protection against corrosion, wear, and food-safe chemicals while significantly reducing material costs. Learn more about Quarite N and explore how our cladding is used in rollers and drums. Related markets facing similar challenges Other industries such as pharmaceuticals, chemical processing and paper industry face similar challenges regarding corrosion, wear, and chemical exposure. Topclad’s laser cladding solutions can be applied across these sectors, providing the same level of protection and durability. By ensuring equipment longevity, our solutions help maintain operational efficiency while reducing maintenance costs. Want to ensure your food processing equipment meets the highest durability and hygiene standards? Contact Topclad today and discover how our laser cladding solutions can protect your machinery and lower your operational costs
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Bridges & Water locks

Bridges & Water locks

Laser cladding solutions For the bridge and water locks sector, Topclad recommends the Quarite series, known for its high resistance to corrosion and wear. These properties make it particularly effective for protecting metal surfaces against the severe conditions often encountered in civil engineering applications. The Topclad Length Measuring System (i.e. a laser cladded CIMS system) is another solution we offer, crucial for maintaining precise control over bridge deck and water lock door positions, ensuring operational accuracy and safety. This highly reliable and economic attractive option is available on all Topclad’s Quarite-serie layers. Related markets: dredging, offshore & maritime In addition to serving the bridge and water locks industry, Topclad is also deeply involved in providing solutions for the Offshore and Dredging sectors. Each of these market segments demands high durability and corrosion resistance from the protective coatings used on their equipment. Our laser cladding solutions, such as those used in the Offshore Maritime segment and Dredging segment, are designed to meet these stringent requirements, ensuring long service lives and reduced maintenance across all applications.
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Renewable Energy

Renewable Energy

Laser cladding solutions Topclad’s laser cladding is highly suitable for the renewable energy sector, offering exceptional protection for critical components such as rotor shafts, bearings, generator parts, and elements of floating and marine energy systems. Solutions like Quarite NR+ and Tardisphere are specifically engineered to withstand harsh environmental conditions, including saltwater and abrasive materials. These layers provide robust corrosion and wear resistance, ensuring that renewable energy equipment maintains peak efficiency. Explore the advantages of Quarite NR+ here and Tardisphere here. Related markets facing similar challenges Industries such as offshore drilling, dredging, and mining encounter similar challenges, with constant exposure to corrosive environments and abrasive materials. These industries also benefit from Topclad’s advanced laser cladding solutions, which deliver long-lasting protection in the harshest conditions. Check out these industries in our Market Segments page.
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Topclad Laser Cladding is the leading manufacturer of innovative laser clad layers in Europe. Based in Lelystad, the Netherlands, Topclad Laser Cladding develops and applies laser clad layers for the most demanding industries including oil, gas, sustainable energy, offshore, dredging, mining, bridges and water locks, steel manufacturing and food processing.

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We are Topclad

Topclad is Europe’s leading manufacturer of innovative laser clad layers, based in Lelystad, the Netherlands. We specialize in developing and applying laser clad layers for the most demanding industries, including oil & gas, offshore, dredging, mining, bridges & water locks, steel manufacturing, and food processing.

Our mission is to provide components with superior protection against wear, corrosion, and impact, resulting in significantly improved reliability and uptime of capital-intensive equipment. With over 14 years of experience and a steadfast commitment to quality, we deliver solutions that enhance the performance and longevity of your critical machinery.

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Axel Jansen
Director & Owner Topclad

Why Topclad?

  • Over 14 years laser cladding experience with over 10.000 cladded components
  • More than 10 in-house developed laser clad layers
  • Commitment to quality
  • Expertise in comprehensive repairs
  • 24.000 mm clad length capacity and 2.200 clad diameter capacity
  • Chromium-6-free solutions
Contact usMore about us

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