
Kencotube possesses the huge industrial experience and depth in knowledge of Stainless Steel 347 Flanges, which are austenitic chromium steels containing columbium. Stainless Steel 347 Pipe Flanges are recommended for parts fabricated by welding which cannot be subsequently annealed. SS 347 Pipe Flanges also are used for parts which are intermittently heated and cooled to temperatures between 800 Degree F and 1600 Degree F. Alloy 347 Pipe Flanges requires the columbium plus tantalum content to be not less than 8 times the carbon content and not more than 1.0 percent, where for continuous service the maximum temperature is 1650 Degree F. Alloy 347 Flanges has high carbon (0.04 to 0.10) for better high temperature creep properties. The addition of columbium in Grade 347 Pipe Flanges produces a stabilized type of stainless that eliminates carbide precipitation and, consequently, intergranular corrosion.
Grade 347 Flanges is a stabilized alloy whose specialty is the exceptional resistance to intergranular corrosion. 347 Stainless Steel Flanges can only be hardened by cold working and not by heat treatment, where it is feasible for welding and can be processed by standard shop fabrication. 347 Stainless Steel Pipe Flanges is designed to gain higher creep resistance and it can bear higher temperatures up to 1000 Degree F (537 Degree C). Type 347 Flanges is similar to Type 321, but with slightly improved corrosion resistance in strongly oxidizing environments. Type 347 Pipe Flanges is essentially non-magnetic in the annealed condition and can only be hardened by cold working.
Specifications | ASTM A182 / A240, ASME SA182 / SA240 |
Standards | ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges etc. |
Dimensions | ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings |
Size | 1/2″ TO 36″ [10MM TO 900 MM] |
Class | 150#, 300#, 400#, 600#, 900#, 1500# & 2500#. |
Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
Flanges Products | Expander Flanges, Forged Flanges, Blind Flanges, Reducing Flanges, Orifice Flanges, Socket Weld Flanges, Slip On Flanges, Flat Flanges, Lapped Joint Flanges, High Hub Blinds Flanges, Nipo Flanges, Threaded Flanges, Square Flanges, Long Neck Weld Flanges, RTJ Flanges etc |
ASME/ANSI B 16.5 | Welding Neck Flange, Slip on Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Ring Type Joint Flange |
Pressure Class | 150, 300, 400, 600, 900, 1500, 2500 |
ASME/ANSI B 16.47 | Welding Neck Flange, Blind Flange [Series A & B] |
Pressure Class | 75, 150, 300, 400, 600, 900 |
ASME/ANSI B 16.36 | Welding Neck Flange, Slipon Flange, Threaded Flange |
Pressure Class | 300, 400, 600, 900, 1500, 2500 |
BS 4504 SEC 3.1 | Welding Neck Flange, Hubbed Slipon Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate Flange,Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange |
Pressure Class | PN 2.5 TO PN 40 |
BS 4504[PART 1] | Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange |
Pressure Class | PN 2.5 TO PN 400 |
BS 1560 BOSS | Welding Neck Flange, Socket Welding Flange, Slip-On Flange, Blind Flange,Screwed Boss Flange, Lapped Flange |
Pressure Class | 150, 300, 400, 600, 900, 1500, 2500 |
DIN FLANGES | DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673 |
Pressure Class | PN 6 TO PN 100 |
STANDARD | WERKSTOFF NR. | UNS | JIS | BS | EN | EURONORM |
---|---|---|---|---|---|---|
SS 347 | 1.4550 | S34700 | - | - | - | - |
Grade | Ni | Cr | Fe | Si | Mn | C | P | S | Cb+Ta |
---|---|---|---|---|---|---|---|---|---|
SS 347 | 11.00 | 18.00 | Bal | 1.00 | 2.00 | 0.080 | 0.045 | 0.030 | 10 x C |
Grade | Tensile strength (MPa) | Modulus of elasticity (GPa) | Elongation at break (%) | Hardness - Brinell |
---|---|---|---|---|
SS 347 | 520-1100 | 190-210 | 60 | 160-190 |
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