Everything You Need to Know about Nitronic 60 CNC Machining

Have you ever wondered what makes Nitronic 60 such a popular material in CNC machining? It’s strong, resistant to corrosion, and provides superior performance under tough conditions. But here’s the problem: despite all its advantages, not everyone fully understands how to work with it.

Nitronic 60 is a high-performance stainless steel alloy, known for its exceptional corrosion resistance and strength. It’s commonly used in demanding industries like aerospace, marine, and chemical processing. CNC machining Nitronic 60 requires specialized knowledge due to its toughness, but the results are worth it—providing precision, durability, and longevity. 

This article will help you understand how to work with Nitronic 60 efficiently in CNC machining and why it’s worth considering for your next project.

What is Nitronic 60 Machining?

Nitronic 60 machining refers to the process of cutting, shaping, or finishing Nitronic 60 alloy using CNC machines. This material is known for its excellent corrosion resistance, high strength, and ability to withstand extreme conditions. Machining Nitronic 60 requires specific tools and techniques to achieve precise results due to its toughness.

What is the Nitronic 60 Material Properties?

Nitronic 60 is a high-strength, corrosion-resistant alloy primarily composed of stainless steel, with added elements like manganese and nitrogen. Its properties include excellent resistance to pitting, crevice, and stress corrosion cracking. 

It also boasts superior wear resistance, high tensile strength, and outstanding performance at elevated temperatures. These qualities make it ideal for harsh environments such as marine, aerospace, and chemical processing industries.

Nitronic 60 Machining Capabilities

CNC Milling

CNC milling is a highly effective method for shaping Nitronic 60. The material’s hardness requires carbide tools, and a slower feed rate to prevent tool wear. Due to its toughness, using appropriate cutting speeds and coolant is essential to avoid overheating and to achieve a smooth finish.

CNC Turning

In CNC turning, Nitronic 60 can be turned with precision, but again, it requires high-quality tooling and slower cutting speeds. Carbide inserts are typically used, and coolant is a must to control heat buildup and prolong tool life. The material’s strength makes it ideal for producing intricate, durable components.

Swiss Machining

Swiss machining is an ideal method for producing small, precise parts from Nitronic 60. The material’s excellent resistance to wear and corrosion makes it perfect for Swiss turning, especially for parts with tight tolerances. Like with milling and turning, coolant is essential, and specialized tooling ensures a smooth process.

Finish Apply for Nitronic 60 Machining

1. Passivation

Passivation is a key post-machining treatment for stainless steels, including Nitronic 60. This process involves immersing the material in a mild acid solution, usually nitric acid, to remove free iron from the surface and enhance its corrosion resistance. 

2. Polishing

For applications where appearance is a concern, polishing is often used to achieve a smooth, shiny surface finish. Polishing also contributes to corrosion resistance by reducing surface roughness and preventing the accumulation of contaminants that could lead to corrosion. 

3. Electropolishing

Electropolishing involves using an electrochemical process to remove a thin layer from the surface of the material. This not only improves surface smoothness and brightness but also increases corrosion resistance and reduces friction. Electropolishing is particularly beneficial for parts exposed to harsh environments, such as marine and chemical industries.

4. Blasting or Abrasive Finishing

In some applications, a matte or textured finish is desired. Shot blasting or abrasive finishing can be used to create a uniform surface texture while improving corrosion resistance. This is especially useful for parts that require a non-reflective surface or need to blend into their environment, such as structural components in the aerospace or automotive industries.

5. Coatings

For extreme conditions, protective coatings like PVD (Physical Vapor Deposition) or thermal spray coatings may be applied. These coatings enhance the surface hardness, provide additional corrosion resistance, and can even provide a decorative finish. Coatings are particularly useful for Nitronic 60 parts used in highly demanding industries, like oil and gas, where additional protection is needed.

Application of Nitronic 60 Machining

Shafts

Pins

Bushings

Bolts and Fasteners

Flanges

Valve Components

Gears

Compression Springs

Conclusion

If you’re looking for high-performance, durable components made from Nitronic 60, we can help. Our expertise in CNC machining ensures precision and quality in every part. Whether you need shafts, pins, or any other custom part, feel free to contact us for further details and assistance with your project.

FAQ

Can Nitronic 60 be welded?

Yes, Nitronic 60 can be welded, but specific techniques and filler materials are recommended to maintain its properties.

Is Nitronic 60 resistant to high temperatures?

Yes, Nitronic 60 performs well at temperatures up to 1500°F (815°C), making it suitable for high-temperature applications.

How does Nitronic 60 compare to other stainless steels?

Compared to standard stainless steels, Nitronic 60 offers superior resistance to pitting, crevice corrosion, and stress corrosion cracking, as well as higher tensile strength.

What is the difference between Nitronic 60 and Inconel?

Nitronic 60 is a high-strength stainless steel alloy primarily known for its corrosion resistance, while Inconel is a family of nickel-chromium alloys that offer superior resistance to oxidation and high temperatures. 

Inconel is typically used in more extreme high-temperature environments, such as jet engines, whereas Nitronic 60 is preferred for its excellent resistance to stress corrosion cracking and better cost-efficiency in less extreme conditions.

What is another name for Nitronic 60?

Nitronic 60 is sometimes referred to as UNS S21800, which is its Unified Numbering System (UNS) designation.