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ASTM A182 F347 (UNS S34700) Stainless Steel Weld Neck Raised Face Flange B16.5
ASTM A182 F347 is an austenitic steel alloy with the addition of a stabilizing element i.e. Niobium. The addition of niobium has a strengthening effect on the steel. Niobium and chromium is the reason why the A182 F347 WNRF Flanges can be used for high temperature service. One of the main advantages of this alloy is its excellent resistance to intergranular corrosion after being exposed to temperatures in the chromium carbide precipitation range. The temperature in the chromium carbide precipitation falls in between the range of 800 to 1500°F. ASTM A182 F347 Flanges also doesn't compromise its excellent mechanical properties such as its higher creep and stress rupture.
Equivalent:
| STANDARD | UNS | WERKSTOFF NR. | JIS | GOST | EN |
| F347 | S34700 | 1.4550 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
Specifications:
| Specification | ASTM A182 / ASME SA182 |
| Manufacturing Process | Hot Forging / Rolling / Machining |
| Grades | 202 / 304 / 304L / 304H / 309S / 310S / 316 / 316L / 316Ti / 317L / 321 / 321H / 347 / 347H / 904L etc. |
| Outer Diameter | 1/2" To 48" |
| Pressure Class | Class 150#, Class 300#, Class 400#, Class 600#, Class 900#, Class 1500#, Class 2500# |
| Schedule | SCH 10s To SCH XXS or As Per Custom Requirement |
| Facing | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Dimension | ASME B16.5, ASME B16.47 SERIES A, ASME B16.47 SERIES B, ASME B16.36, BS10, EN1092-1:2013, MSS SP44, ASA, API-605, ISO 7005, ISO 15590-3, DIN 2631--2638, DIN 2573-2576, DIN 2527, DIn 2641-2642, DIN 2565-2566, DIN2502, AWWA, AS2129 TABLE C, D, E, F, J etc.. |
| Types | Welding Neck Flange, Slip On Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Blind Flange, Orifice Flanges, Plate Flange, Long Welding Neck Flanges, Weldoflange, Nipoflange, Expander Flange, Reducing Flange, WNRF Flange, SORF Flange, SWRF Flange, Custom as per Drawing etc. |
Chemical Composition:
| Chromium | 17 min.-19 max. |
| Nickel | 9 min.-13 max. |
| Carbon | 0.08 |
| Manganese | 2 |
| Phosphorus | 0.045 |
| Sulfur | 0.03 |
| Silicon | 0.75 |
| Columbium & Tantalum | 10 x (C + N) min.-1 max. |
| Iron | Bal. |
Mechanical Properties:
| Density | 8 g/cm3 |
| Melting Point | 1454 °C (2650 °F) |
| Tensile Strength | Psi – 75000, MPa – 515 |
| Yield Strength (0.2%Offset) | Psi – 30000, MPa – 205 |
| Elongation, min. | 40 % |
Applications:
Oil and Gas Plants
Food Processing Plants
Pipeline Equipments
Power Industries
Ship Building Equipments
Paper and Pulp Industries
Cement Industries
Chemical Industries
