In a fast-evolving industry, Prime Steel Industries remains adaptive, ensuring that its products and services align with the dynamic demands of the market.
Corporate Off: No.6, Ground Floor, 32, Parekh House,
7th Khetwadi, Mumbai – 400004, Maharashtra, India.
At Prime Steel, we take immense pride in being a distinguished manufacturer and supplier, specializing in the production of premium stainless steel 304/304L flanges. Our commitment to delivering excellence is ingrained in every aspect of our operations, and we have meticulously designed these 304h flanges to embody the highest standards of quality, resilience, and adaptability. What sets us apart at Prime Steel is not just our product line but our commitment to providing an unparalleled customer experience.
Type: Flanged Pipe Fittings
Material: Stainless Steel
ASTM: A182 /SA182
Grade: 304/304L/304h
UNS: S30400/S30403/S30409
WERKSTOFF: 1.4301/1.4306/1.4948
ASTM A182 F304/ 304L / ASME SA182 F304h
15mm ( 1/2" NPS ) up to 600mm ( 24" NPS ), For 2500# in sizes from NPS 1/2 to NPS 12
FF—Flat Face, RF—Raised Face, FM—Female Face, M—Male Face, T—Tongue Face, G—Groove Face, RJ—Ring Joint.
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64.
Chemical Processing, Oil and Gas Industry, Petrochemical Industry
Stainless steel flanges with grades 304, 304L, and 304H are components used in piping systems for connecting pipes, valves, pumps, and other equipment. These Flanges are specifically designed to work with the corresponding variations of stainless steel—304, 304L, and 304H.
Stainless Steel 304 Flanges:
Stainless Steel 304L Flanges:
Stainless Steel 304H Flanges:
Check ANSI/ASME B16.5, B 16.47 Series A & B, B16.48 Flange Dimensions Download
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
|---|---|---|---|---|---|---|---|
| BS | En | No | Name | ||||
| 304 | S30400 | 304S31 | 58E | 1.4301 | X5CrNi18-10 | 2332 | SUS 304 |
| 304L | S30403 | 304S11 | - | 1.4306 | X2CrNi19-11 | 2352 | SUS 304L |
| 304H | S30409 | 304S51 | - | 1.4948 | X6CrNi18-11 | - | - |
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
|---|---|---|---|---|---|---|---|---|---|---|
| 304 | min. max. | - 0.08 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - 0.10 |
| 304L | min. max. | - 0.030 | - 2.0 | - 0.75 | - 0.045 | - 0.030 | 18.0 20.0 | - | 8.0 12.0 | - 0.10 |
| 304H | min. max. | 0.04 0.10 | - 2.0 | - 0.75 | -0.045 | - 0.030 | 18.0 20.0 | - | 8.0 10.5 | - |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
|---|---|---|---|---|---|
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| 304 | 515 | 205 | 40 | 92 | 201 |
| 304L | 485 | 170 | 40 | 92 | 201 |
| 304H | 515 | 205 | 40 | 92 | 201 |
| 304H also has a requirement for a grain size of ASTM No 7 or coarser. | |||||
| Grade | Density (kg/m³) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m·K) | Specific Heat (J/kg·K) | Electrical Resistivity (NΩ·m) |
|---|---|---|---|---|---|---|
| 304 | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 |
| 304L | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 |
| 304H | 8000 | 193 | 17.2 | 17.8 | 18.4 | 16.2 |
Excellent corrosion resistance, high-temperature strength, and good formability.
Improved weldability due to lower carbon content, suitable for welding applications.
Yes, all three grades (304, 304L, 304H) are weldable, but 304L is preferred for improved weldability.
Flanges are available in various sizes and pressure classes, conforming to industry standards (ANSI, ASME, DIN).
