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Stainless steel 304H flange is a special austenitic stainless steel alloy with a slightly higher carbon content than conventional 304 stainless steel, which allows it to maintain excellent mechanical properties in high temperature environments.
304H Reducing Flange has excellent corrosion resistance, allowing it to maintain stable performance in various harsh environments, such as the chemical industry, petrochemical industry, and food processing.
Flange type: There are many types of 304H stainless steel flanges, such as sliding sleeve flange, butt welding flange, socket welding flange, blind flange and looper flange, etc. Each type has its specific application. scenarios, providing great flexibility in the design and installation of piping systems.
All 304H stainless steel flanges must comply with a series of industry standards and specifications, including ASTM A182 and ASME B16.5, to ensure their compatibility and interchangeability.
Chemical composition of F304H grade stainless steel pipe flange
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
| SS 304H | 0.10 max | 2.0 max | 0.75 max | 0.045 max | 0.03 max | 18 – 20 | - | 8 – 10.5 | - |
ASTM A182 SS 304H Mechanical Properties of Plate Flanges
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Stainless Steel 304H Flanges
ASTM A182 F304 Stainless Steel Flanges
| Stainless Steel 304/304L Flanges Type | Size | |
| ASTM A182 F304 Slip-On Flanges | ASTM A182 F304 Threaded Flanges | Sizes 1/8″ – 36″ Raised Face or Flat Face |
| ASTM A182 F304L Weld Neck Flanges | ASTM A182 F304L Socket Weld Flanges | |
| ASTM A182 F304H Blind Flanges | ASTM A182 F304H Reducing Flanges | |
| ASTM A182 F304 Lap Joint Flanges | SS 304 Flanges | |
| ASTM A182 F304 Orifice Flanges | ASTM A182 F304L Forged Flanges | |
| ASTM A182 F304 Ring Type Joint Flanges | ASTM A182 F304H Square Flanges | |
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