Monel vs Hastelloy: What’s the Difference?

In the industrial field, the application of metal materials is extensive and diverse, and Monel alloy and Hastelloy are the champions among them. Although they both belong to high-performance alloys, there are significant differences between them. So, Monel vs Hastelloy: what’s the difference? This article will delve into the differences between these two alloys to help readers better understand their characteristics and application fields.

Monel vs Hastelloy: What’s the Difference?

Monel vs Hastelloy – 1. Differences in Ingredients and Properties

Monel alloy is a nickel alloy based on copper, usually containing about 60% nickel and 30% copper, as well as other elements such as iron, manganese, etc. It has good corrosion resistance and strength, and exhibits good plasticity and processability at room temperature.

Hastelloy is a super alloy with iron, nickel, and chromium as its main components. The proportion of its components can be adjusted according to specific application requirements. Hastelloy exhibits excellent corrosion resistance and oxidation resistance in high-temperature environments, so it is widely used in industrial fields under high-temperature and strong corrosion environments.

Monel vs Hastelloy – 2. Differences in Physical and Mechanical Properties

Monel alloy has good ductility and toughness, but its strength and high-temperature properties are relatively low. It performs well in normal to moderate temperatures, but its performance degrades significantly in high-temperature environments.

Hastelloy has excellent strength and high-temperature properties. It can maintain stable mechanical properties from room temperature to high-temperature environments, and its performance is especially excellent in high-temperature environments. But relatively, the ductility and toughness of Hastelloy are slightly inferior to Monel alloy.

Monel vs Hastelloy – 3. Corrosion Resistance Differences

Monel alloy has good corrosion resistance in acidic and alkaline environments. However, in some strong oxidizing environments, such as high-temperature concentrated sulfuric acid or nitric acid, the use of Monel alloy may be limited.

Hastelloy has excellent corrosion resistance to most acids, alkalis, and salts, especially in high-temperature environments. However, Hastelloy may also face some challenges in certain strongly oxidizing environments, such as concentrated sulfuric acid or nitric acid at high temperatures.

Monel vs Hastelloy – 4. Application Field Comparison

Because Monel alloy has good plasticity and processability, it is widely used in shipbuilding, petrochemical industry, medical equipment, and other fields. In addition, due to its good corrosion resistance, Monel alloy is also often used to make battery anode materials.

Hastelloy is widely used in aerospace, chemical industry, nuclear industry, and other fields due to its excellent high-temperature performance and corrosion resistance. Especially in high-temperature sour gas environments, such as petroleum refining and natural gas industries, Hastelloy has been widely used.

Why Choose Huaxiao Alloy?

Monel and Hastelloy each have their own unique advantages and scope of application. When choosing to use it, you need to comprehensively consider it based on the specific application environment and usage conditions.

For example, Hastelloy is a better choice for applications that need to withstand high temperatures and highly corrosive environments; while Monel alloys are more advantageous for applications that require good plasticity and processability. At the same time, factors such as cost, availability, and sustainability also need to be considered.

Thank you for reading our article and we hope it can help you to have a better understanding of the differences between Monel vs Hastelloy. If you are looking for Monel alloy and Hastelloy suppliers now, please don’t hesitate to contact Huaxiao Alloy.

As a leading supplier of Monel alloy and Hastelloy from China, Huaxiao Alloy provides customers with high-quality Hastelloy S Alloy, Inconel Alloy 600, Inconel Alloy 601, Inconel 625 UNS N06625,  Monel K500 and Monel 400, Hastelloy B3 (UNS N10675), Hastelloy D205, Hastelloy G30 (UNS N06030), Hastelloy C-2000, Hastelloy B2, Hastelloy X alloy, Hastelloy C4, Hastelloy C-276, and Hastelloy C22.