Choosing the Right Materials for Your Heat Exchanger

Selecting the appropriate materials of construction is crucial for the optimal performance and longevity of a heat exchanger. Leading manufacturers offer a diverse range of material options to meet the specific requirements of various industries and applications. These materials include carbon steel, which provides a cost-effective solution for general applications, and all 300 series stainless steels known for their excellent corrosion resistance and strength. For more demanding environments, 600 series nickel alloys and all grades of Hastelloy offer superior resistance to oxidation and chemical corrosion. Additionally, 800 series alloys and duplex stainless steels provide enhanced thermal stability and mechanical strength. Nickel 200 and various copper alloys, such as 90/10, 70/30, NRB, and Muntz, are ideal for specialized applications requiring excellent thermal conductivity and corrosion resistance. Alloy clad and lined constructions are also available for added protection. Manufacturers regularly qualify weld procedures for new materials and can subcontract reactive alloy welding, including titanium, tantalum, and zirconium, ensuring they can meet the unique needs of any project.

• Carbon Steel: Cost-effective for general applications. Provides good mechanical properties and durability. Ideal for low-corrosion environments.
• 300 Series Stainless Steels: Excellent corrosion resistance. High strength and durability. Suitable for various industrial applications, including food processing and pharmaceuticals.

• 600 Series Nickel Alloys: Superior resistance to oxidation and chemical corrosion. High-temperature capabilities. Commonly used in harsh environments like chemical processing plants.
• Hastelloy (All Grades): Exceptional resistance to a wide range of corrosive media. Ideal for high-stress, high-temperature conditions. Used in industries like aerospace, chemical processing, and marine engineering.

• 800 Series Alloys: Enhanced thermal stability. Excellent mechanical strength at high temperatures. Preferred in applications involving thermal cycling.
• Duplex Stainless Steels: Combines high strength with excellent corrosion resistance. Lower thermal expansion compared to austenitic stainless steels. Suitable for use in aggressive environments, including offshore and petrochemical industries.

• Nickel 200: High thermal and electrical conductivity. Good resistance to various corrosive environments. Often used in electronic components and food processing.
• Copper Alloys (90/10, 70/30, NRB, Muntz, and Others): Excellent thermal conductivity. High corrosion resistance, especially in seawater. Commonly used in marine and desalination applications.

• Alloy Clad and Lined Construction: Provides additional protection against corrosion. Extends the service life of heat exchangers. Ideal for environments with high wear and tear.
• Chrome-Moly Alloys and More: Known for their strength and creep resistance at high temperatures. Used in power generation and petrochemical industries. Reactive Alloy Welding (Titanium, Tantalum, Zirconium):

• Reactive Alloy Welding (Titanium, Tantalum, Zirconium): Specialized welding for highly reactive metals. Ensures materials maintain their integrity and performance. Essential for applications in extreme environments with highly corrosive media.