Industrial 304H Stainless Steel Plate High Chromium-Nickel Content ASME SA240 Custom Sizes

Heat-Resistant 304H SS Plate For Furnace Components & Pressure Vessels Annealed & Pickled Surface

Products Specification

Introduction

Key Parameters

Product Types

• Sheets and Plates: Used for structural components, heat exchangers, and pressure vessels.
• Bars and Rods: Includes round, square, and hexagonal bars for machining into shafts, bolts, or gears.
• Tubes and Pipes: Seamless or welded, suitable for high-temperature fluid transport (e.g., in boilers or chemical plants).
• Wire and Mesh: Used in filters, screens, or architectural applications requiring corrosion resistance.
• Fittings and Forgings: Custom components for high-temperature systems, such as flanges or valves.

Key Characteristics

1. High-Temperature Resistance
   • Maintains strength and dimensional stability at temperatures up to ~870°C, making it ideal for applications where 304 stainless steel might lose mechanical properties.
   • Reduced risk of creep deformation under prolonged heat exposure.
2. Corrosion Resistance
   • Similar to 304, it offers excellent resistance to atmospheric corrosion, mild acids, and alkaline solutions.
   • Not suitable for highly corrosive environments (e.g., seawater or chlorides) without additional protection.
3. Weldability and Formability
   • Good weldability, though post-weld annealing may be needed to minimize carbide precipitation (sensitization) in critical applications.
   • Can be cold-formed into complex shapes, though higher carbon content slightly reduces ductility compared to 304.
4. Non-Magnetic and Hygienic
   • Austenitic structure makes it non-magnetic, suitable for applications near magnetic fields.
   • Smooth surface finish allows easy cleaning, making it usable in food processing or pharmaceutical industries.

Applications

• Power Generation: Boiler components, superheaters, and heat exchangers in thermal power plants.
• Petrochemical and Refining: Reactors, distillation columns, and pipelines for processing high-temperature fluids.
• Aerospace and Automotive: Exhaust systems, engine components, and parts exposed to combustion byproducts.
• Heat Treatment Equipment: Furnace parts, trays, and fixtures for heat-treating processes.
• Industrial Furnaces: Components in kilns, ovens, and incinerators operating at elevated temperatures.
• Chemical Processing: Vessels and tanks for storing or processing chemicals at high temperatures.

Comparison with 304 and 316 Stainless Steels

• 304 vs. 304H: 304H’s higher carbon content enhances high-temperature strength but slightly reduces corrosion resistance (due to potential carbide precipitation if not properly processed).
• 304H vs. 316H: 316H adds molybdenum (2-3%), improving corrosion resistance in harsh environments (e.g., seawater or acids), while 304H prioritizes cost-effectiveness and general high-temperature strength.

Maintenance and Considerations

• To avoid sensitization (carbide precipitation at grain boundaries), post-weld heat treatment may be required for critical applications.
• Regular cleaning with non-abrasive agents helps maintain corrosion resistance in aggressive environments.
• When selecting 304H, ensure the application’s temperature and corrosion requirements align with its properties to maximize service life.

304H Stainless Steel Plate

ASME SA240 Stainless Steel Plate

Industrial 304H Stainless Steel Plate High Chromium-Nickel Content ASME SA240 Custom Sizes Images