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
- Fast Shipping / Ready Stock
- ISO 9001 Direct Factory
- Custom Cutting & Processing
- 100% MTC & SGS Inspection Supported
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






