Nickel Alloy 200 Round Bars Vs Nickel alloy 201 Round Bars – What’s the Difference?

Nickel alloys are widely used in various applications due to their excellent corrosion resistance, high-temperature resistance, and toughness. Nickel alloy 200 and Nickel alloy 201 are two of the most commonly used grades of nickel alloys in the industry. While they may seem similar initially, the two have significant differences. This blog post will discuss the differences between Nickel alloy 200 round bars and Nickel alloy 201 round bars.

What is Nickel Alloy 200 Round Bars and Nickel alloy 201 Round Bars

Nickel Alloy 200 and Nickel Alloy 201 are two nickel-based alloys with similar compositions but differing properties. Nickel Alloy 200 is an excellent material choice for applications requiring superior corrosion resistance and good strength at high temperatures. It is ductile, malleable and exhibits low magnetic permeability. On the other hand, Nickel Alloy 201 provides slightly higher levels of hardness and tensile strength than its counterpart though still exhibiting excellent stress corrosion cracking resistance capabilities. Both materials display outstanding weldability properties, great thermal stability, and exceptional electrical conductivity.

Difference Between Nickel Alloy 200 Round Bars Vs Nickel alloy 201 Round Bars

Chemical Composition:

One of the primary differences between Nickel Alloy 200 and Nickel Alloy 201 round bars is their chemical composition. While both alloys have nickel as their base metal, Nickel Alloy 200 contains 99.6% nickel, 0.2% iron, and 0.2% copper. In contrast, Nickel alloy 201 contains 99.5% nickel, 0.02% carbon, and 0.06% iron. This subtle difference in chemical composition significantly impacts the properties and performance of both alloys.

Mechanical Properties:

The mechanical properties of Nickel alloy 200 and 201 round bars are quite similar. Both alloys possess excellent strength and ductility, making them well-suited for high-temperature applications. However, due to the difference in chemical composition, Nickel alloy 200 has slightly better resistance to corrosion in reducing environments, whereas Nickel alloy 201 has better resistance to corrosion in oxidizing environments.

Nickel Alloy 200 round bars and nickel alloy 201 round bars differ in their mechanical properties. Nickel Alloy 200 has higher strength and excellent yields, whereas nickel alloy 201 provides better corrosion resistance due to its higher chromium content. Both materials are highly workable and offer good weldability; however, the performance of Nickel Alloy 200 is superior in formability and drawing ability.


Weldability is another factor that sets Nickel Alloy 200 and Nickel Alloy 201 round bars apart. Nickel alloy 200 can be easily welded using various welding techniques such as TIG, MIG, and SAW. On the other hand, Nickel Alloy 201 has poor weldability due to its high carbon content. It requires special welding techniques and pre-weld heat treatment to avoid cracking.

Nickel Alloy 200 Round Bars and Nickel Alloy 201 Round Bars are both low-carbon steels with excellent weldability. The difference between these two grades of nickel alloys is their chemical composition; Nickel Alloy 201 has a slightly higher amount of chromium, manganese, and nitrogen in comparison to Nickel Alloy 200. This allows alloy 201 to be more resistant to corrosion. Both grades have an oxide layer which inhibits the possibility of welding contamination. Therefore, both can be used for various welding projects with good results!


Nickel alloys find use in a wide variety of applications across several industries. Nickel alloy 200 and 201 round bars are widely used in the chemical, petrochemical, and oil and gas industries. However, due to their slightly different properties, their specific applications differ. For instance, Nickel alloy 200 is commonly used to manufacture caustic soda production equipment, whereas Nickel alloy 201 is preferred for producing electronics and aerospace components.


Finally, Nickel alloy 200 and 201 round bars differ in price. Nickel alloy 200 is considered a more economical option than Nickel alloy 201 due to its simpler chemical composition and lower production costs. Nickel Alloy 200 and 201 are two alloys with very similar chemical compositions; however, the differences in their composition result in minor variations regarding mechanical properties. In terms of price, Alloy 200 is typically more expensive than Alloy 201 due to its higher nickel content. Additionally, the availability of Nickel Alloy 200 Round Bars can be lower compared to Nickel alloy 201 Round Bars depending on regional markets and production costs. Depending on your application needs, one alloy may be more suitable based on cost and performance considerations.


In conclusion, while Nickel Alloy 200 and Nickel Alloy 201 round bars may seem similar at first glance, there are significant differences in their chemical composition, mechanical properties, weldability, applications, and price. Therefore, choosing the right alloy for your specific application is essential to ensure optimal performance and longevity. If you need more guidance on selecting the right nickel alloy for your project, contact our experts at XYZ Company, who can offer valuable insights and recommendations.

Nickel Alloy 200 Round Bars Vs Nickel alloy 201 Round Bars – What’s the Difference?

by AB Steel time to read: 3 min