304H Stainless Steel Plate

Grade: 304H

Thickness: 3.0mm-200mm

Width: 1.5m/2.0m/2.2m or as client’s requirement.

Standard: ASTM A240/A240M, JIS G4304, JISG 4305, EN 10088/3

Finish: No.1, Polished

Grade 304H stainless steel is a high-carbon version of regular Grade 304 (between 0.04 and 0.1% percent). The higher carbon content increases the alloy’s strength in elevated temperatures, which makes it suitable for applications that require higher temperatures and corrosion resistance. Also, this alloy offers a higher tolerance for extreme thermal conditions.

This versatile material is ideal for applications like boilers, heat exchangers, and high-temperature piping, where durability above 800°F (427°C) is essential.

Chemical composition 304H (UNS S30409/ EN1.4948)
Carbon Range% 0.04-0.1
Manganese, Max% 2
Phosphorus, Max% 0.045
Sulphur, Max% 0.03
Silicon, Max% 0.75
Chromium Range% 18.0-20.0
Nickel Range% 8.0-10.5
Mechanical Properties 304H
Tensile Min 75 ksi
Yield Min 30 ksi
Elongation Min 40%
Hardness Max 92 HRB
  • Boilers/Pressure Vessels: Steam drums, headers.
  • Heat Exchangers: Tubes, shells.
  • Power Generation: Superheaters, reheaters.
  • Chemical Processing: High-temp vessels.
  • Piping: SA240 304H pipe for elevated temperatures.

    Thickness: 3.0mm-200mm

    Width: 1.5m/2.0m/2.2m or as client’s requirement.

    Standard: ASTM A240/A240M, JIS G4304, JISG 4305, EN 10088/3

Grade 304H stainless steel is a high-carbon version of regular Grade 304 (between 0.04 and 0.1% percent). The higher carbon content increases the alloy’s strength in elevated temperatures, which makes it suitable for applications that require higher temperatures and corrosion resistance. Also, this alloy offers a higher tolerance for extreme thermal conditions.

This versatile material is ideal for applications like boilers, heat exchangers, and high-temperature piping, where durability above 800°F (427°C) is essential.

Chemical composition 304H (UNS S30409/ EN1.4948)
Carbon Range% 0.04-0.1
Manganese, Max% 2
Phosphorus, Max% 0.045
Sulphur, Max% 0.03
Silicon, Max% 0.75
Chromium Range% 18.0-20.0
Nickel Range% 8.0-10.5
Mechanical Properties 304H
Tensile Min 75 ksi
Yield Min 30 ksi
Elongation Min 40%
Hardness Max 92 HRB
  • Boilers/Pressure Vessels: Steam drums, headers.
  • Heat Exchangers: Tubes, shells.
  • Power Generation: Superheaters, reheaters.
  • Chemical Processing: High-temp vessels.
  • Piping: SA240 304H pipe for elevated temperatures.

    Thickness: 3.0mm-200mm

    Width: 1.5m/2.0m/2.2m or as client’s requirement.

    Standard: ASTM A240/A240M, JIS G4304, JISG 4305, EN 10088/3

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