Stainless steel has become the backbone of modern industries because of its unmatched strength, corrosion resistance, and durability. Among the many grades available, Stainless Steel 304H Pipe is one of the most widely used for high-temperature and high-pressure applications. As a high-carbon variant of SS 304, this grade is designed to deliver enhanced strength and creep resistance, making it suitable for demanding industries such as power generation, oil & gas, petrochemicals, and heat exchangers.
What is Stainless Steel 304H Pipe?
Stainless Steel 304H is an austenitic stainless steel grade with higher carbon content compared to standard 304 and 304L. The increased carbon level provides greater tensile strength and the ability to withstand elevated temperatures. These pipes are often used in structural and pressure-containing applications where durability is critical.
Key Features of SS 304H Pipe:
Higher tensile and yield strength
Excellent resistance to oxidation and corrosion
Superior creep resistance at elevated temperatures
Good weldability and formability
Long service life in harsh environments
Chemical Composition of SS 304H
The composition of 304H is similar to 304 but with a higher carbon content (0.04 – 0.10%).
Carbon (C): 0.04 – 0.10%
Chromium (Cr): 18.0 – 20.0%
Nickel (Ni): 8.0 – 11.0%
Manganese (Mn): ≤ 2.0%
Silicon (Si): ≤ 1.0%
Phosphorus (P): ≤ 0.045%
Sulfur (S): ≤ 0.03%
This balanced chemistry provides excellent corrosion resistance while improving strength and temperature resistance.
Applications of Stainless Steel 304H Pipe
Due to its excellent mechanical properties and corrosion resistance, SS 304H pipes are used in various industries, including:
Power Plants: Superheaters, heat exchangers, and boiler tubes
Petrochemical Industry: Refineries, oil & gas pipelines, and chemical plants
Fertilizer Industry: Pressure vessels, process piping, and reactors
Heat Treatment Equipment: Furnaces and thermal processing units
Food & Beverage Industry: High-pressure processing equipment
Advantages of Using SS 304H Pipes
High-Temperature Strength – Withstands temperatures above 500°C without losing mechanical stability.
Corrosion Resistance – Protects against rust and oxidation in aggressive environments.
Durability – Offers long service life with low maintenance.
Versatility – Available in seamless, welded, ERW, and fabricated types to suit diverse applications.
Cost-Effectiveness – Provides a balance of strength and affordability compared to higher alloy grades.
Conclusion
Stainless Steel 304H Pipe is a reliable solution for industries that require high strength, excellent corrosion resistance, and the ability to perform under extreme conditions. Whether it is power generation, petrochemicals, or high-pressure processing, SS 304H pipes ensure efficiency and durability.
If you are looking for premium quality Stainless Steel 304H Pipes, connect with trusted manufacturers and exporters to get customized solutions for your industrial needs.
