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Super Duplex stainless for e.g. alloy UNS S32750, has a mixed microstructure of both austenite as well as ferrite in an equal or 50/50 ratio. This is the main reason why Super Duplex Flanges note an improvement of tensile strength over ferritic and austenitic steel grades. The primary difference between standard duplex grades and the Super Duplex Steel Flanges Material is that Super duplex has a higher content of both molybdenum and chromium their alloy. This increase in alloyants is what gives the super duplex stainless steels greater corrosion resistance properties.
Therefore, in industries like the oil and gas as well as the chemical industry, device such as the Super Duplex 2507 Flanges are very common.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Fe |
| S32750 | 0.030 maximum | 1.20 maximum | 0.80 maximum | 0.035 maximum | 0.020 maximum | 24.00 – 26.00 | 3.00 – 5.00 | 6.00 – 8.00 | 0.24 – 0.32 | 58.095 minimum |
| STANDARD | WERKSTOFF NR. | UNS |
| Super Duplex 2507 | 1.4410 | S32750 |
The balanced dual phase microstructure in the alloy of Werkstoff No 1.4410 Super Duplex Blind Flanges in conjunction with high tensile strength presents itself to be a cost effective and corrosion resistant solution, particularly in high chloride environments. Most Super Duplex UNS S32750 Flanges have similar advantages as its counterpart. For instance, super duplex alloys have a lower alloying cost, in addition to having an increased tensile and yield strength unlike similar ferritic and austenitic grades with equipment corrosion resistance in chlorine containing environments. In many cases, this gives the buyer a much required respite while purchasing smaller or thinner cross sectioned Super Duplex Stainless Steel Flanges without the need to compromise on both quality and performance.
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
| S32750 | 7.8 | 0.281 | 1350 | 2460 |
| Specification : | Super Duplex Flanges |
| Coating Flange Faces : | Zinc Plated, Yellow Transparent, Anti-rust Paint, Cold and Hot Dip Galvanized, Oil Black Paint |
| Standards: | JIS Flanges, ISO Flanges, GOST Flanges, UNI Flanges, AWWA Flanges, MSS SP44 Flanges, ASME B16.38 Flanges, EN-1092 Flanges, BS10 Flanges, DIN Flanges, PN Flanges, ASME B16.5 Flanges, ASME B16.47 (Series A, Series B) |
| Pressure Rating Table: | Class 150 LBS, Class 300 LBS, Class 600 LBS, Class 900 LBS, Class 1500 LBS, Class 2500 LBS |
| Common Types of Flange : | Flanges 150 LB WNRF Class 300 RTJ 600# BLRF Class 900 SORF |
| Size Chart : | 1/2″ (15 NB) To 48″ (1200NB) |
| Production Process: | Heat Treated, Machined, Forged |
| Supporting Flange Material: | Gasket, Flange Bolts, Ring Joint |
| Application: | Water Pipeline Industry Natural Gas Industry Fabrication Industry Nuclear Power Plant Chemical Industry Oil And Gas Industry |
| Design For Size: | ANSI, EN, ASA, ASME, BS, DIN, JIS, PN |
| Flange Machining Equipment: | Bending machine, Pushing Machine, Sand-blasting machine, Press machine, electric bevelling machine etc |
| Connect Type: | LJF, RF, FF, LMF, SMF, RTJ |
| ASME | Super Duplex Flanges Pressure Rating | ||||||
| Temperature °F | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
| -20 to 100 | 275 | 720 | 960 | 1440 | 2160 | 3600 | 6000 |
| 200 | 230 | 600 | 800 | 1200 | 1800 | 3000 | 5000 |
| 300 | 205 | 540 | 720 | 1080 | 1620 | 2700 | 4500 |
| 400 | 190 | 495 | 660 | 995 | 1490 | 2485 | 4140 |
| 500 | 170 | 465 | 620 | 930 | 1395 | 2330 | 3880 |
| 600 | 140 | 435 | 580 | 875 | 1310 | 2185 | 3640 |
| 650 | 125 | 430 | 575 | 860 | 1290 | 2150 | 3580 |
| 700 | 110 | 425 | 565 | 850 | 1275 | 2125 | 3540 |
| 750 | 95 | 415 | 555 | 830 | 1245 | 2075 | 3460 |
| 800 | 80 | 405 | 540 | 805 | 1210 | 2015 | 3360 |
| 850 | 65 | 395 | 530 | 790 | 1190 | 1980 | 3300 |
| 900 | 50 | 390 | 520 | 780 | 1165 | 1945 | 3240 |
| 950 | 35 | 380 | 510 | 765 | 1145 | 1910 | 3180 |
| 1000 | 20 | 320 | 430 | 640 | 965 | 1605 | 2675 |
| 1050 | 20 | 310 | 410 | 615 | 925 | 1545 | 2570 |
| 1100 | 20 | 255 | 345 | 515 | 770 | 1285 | 2145 |
| 1150 | 20 | 200 | 265 | 400 | 595 | 995 | 1655 |
| 1200 | 20 | 155 | 205 | 310 | 465 | 770 | 1285 |
| 1250 | 20 | 115 | 150 | 225 | 340 | 565 | 945 |
| 1300 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |
| 1350 | 20 | 60 | 80 | 125 | 185 | 310 | 515 |
| 1400 | 20 | 50 | 65 | 95 | 145 | 240 | 400 |
| 1450 | 15 | 35 | 45 | 70 | 105 | 170 | 285 |
| 1500 | 10 | 25 | 35 | 55 | 80 | 135 | 230 |
Super Duplex RTJ Flanges
Super Duplex Raised Face Flanges
Super Duplex Socket Weld Flanges
Super Duplex Slip On Flanges
Super Duplex Reducing Flanges
Super Duplex Weld Neck Flanges
Supers Duplex Blind Flanges
Supers Duplex Flat Face Flanges
Supers Duplexs Orifice Flanges
Supers Duplex Spectacle Flanges
| Standard | Class | Dia. | Bolt Circle Dia. | No. of Bolts | Bolt Size | Dia. of Bolt Hole |
|---|---|---|---|---|---|---|
| AS4087 Flange | PN14 Flange | 95 | 67 | 4 | M12 | 14 |
| AS 2129 Flange | Table C Flange | 95 | 67 | 4 | 13 | 14 |
| Table D Flange | 95 | 67 | 4 | 13 | 14 | |
| Table E Flange | 95 | 67 | 4 | 13 | 14 | |
| Table F Flange | 95 | 67 | 4 | 13 | 14 | |
| Table H Flange | 114 | 83 | 4 | 16 | 17 | |
| Table J Flange | 114 | 83 | 4 | 16 | 17 | |
| ANSI B16.5 Flange | ANSI 150 Flange | 89 | 60 | 4 | 13 | 16 |
| ANSI 300 Flange | 95 | 67 | 4 | 13 | 16 | |
| ANSI 600 Flange | 95 | 67 | 4 | 13 | 16 | |
| ANSI 900 Flange | 121 | 83 | 4 | 19 | 22 | |
| ANSI 1500 Flange | 121 | 83 | 4 | 19 | 22 | |
| ISO 7005 (DIN) Flange | PN6 Flange | 80 | 55 | 4 | M10 | 11 |
| PN10 Flange | 95 | 65 | 4 | M12 | 14 | |
| PN16 Flange | 95 | 65 | 4 | M12 | 14 | |
| PN20 Flange | 90 | 60.5 | 4 | M14 | 16 | |
| PN25 Flange | 95 | 65 | 4 | M12 | 14 | |
| PN40 Flange | 95 | 65 | 4 | M12 | 14 |
| CLASS | NPS | Super Duplex SORF Flange | Super Duplex NPT Flange | Super Duplex SW Flange | Super Duplex Loose Flange | Super Duplex BLRF Flange | Super Duplex WN Flange |
|---|---|---|---|---|---|---|---|
| 150# | ½ | 1 | 1 | 2 | 1 | 2 | 2 |
| ¾ | 2 | 2 | 2 | 2 | 2 | 2 | |
| 1 | 2 | 2 | 2 | 2 | 2 | 3 | |
| 1¼ | 3 | 3 | 3 | 3 | 3 | 3 | |
| 1½ | 3 | 3 | 3 | 3 | 4 | 4 | |
| 2 | 5 | 5 | 5 | 5 | 5 | 6 | |
| 2½ | 8 | 8 | 8 | 8 | 7 | 10 | |
| 3 | 9 | 9 | 9 | 9 | 9 | 11.5 | |
| 3½ | 11 | 12 | 11 | 11 | 13 | 12 | |
| 4 | 13 | 13 | 13 | 13 | 17 | 16.5 | |
| 5 | 15 | 15 | 15 | 15 | 20 | 21 | |
| 6 | 19 | 19 | 19 | 19 | 27 | 26 | |
| 8 | 30 | 30 | 30 | 30 | 47 | 42 | |
| 10 | 43 | 43 | 43 | 43 | 70 | 54 | |
| 12 | 64 | 64 | 64 | 64 | 123 | 88 | |
| 14 | 90 | 90 | 90 | 105 | 140 | 114 | |
| 16 | 106 | 98 | 98 | 140 | 180 | 140 | |
| 18 | 130 | 130 | 130 | 160 | 220 | 165 | |
| 20 | 165 | 165 | 165 | 195 | 285 | 197 | |
| 22 | 185 | 185 | 185 | 245 | 355 | 225 | |
| 24 | 220 | 220 | 220 | 275 | 430 | 268 | |
| CLASS | NPS | SORF | NPT Flanges | SW | Loose | BLRF | WN |
| 300# | ½ | 2 | 2 | 3 | 2 | 2 | 2 |
| ¾ | 3 | 3 | 3 | 3 | 3 | 3 | |
| 1 | 3 | 3 | 3 | 3 | 4 | 4 | |
| 1¼ | 4.5 | 4.5 | 4 | 4.5 | 6 | 5 | |
| 1½ | 6.5 | 6.5 | 6 | 6.5 | 7 | 7 | |
| 2 | 7 | 7 | 7 | 7 | 8 | 9 | |
| 2½ | 10 | 10 | 10 | 10 | 12 | 12 | |
| 3 | 13 | 14 | 13 | 14.5 | 16 | 18 | |
| 3½ | 17 | 17 | 17 | 17 | 21 | 20 | |
| 4 | 23.5 | 24 | 22 | 24 | 28 | 26.5 | |
| 5 | 29 | 31 | 28 | 28 | 37 | 36 | |
| 6 | 39 | 39 | 39 | 39 | 50 | 45 | |
| 8 | 58 | 58 | 58 | 58 | 81 | 69 | |
| 10 | 81 | 81 | 81 | 91 | 124 | 100 | |
| 12 | 115 | 115 | 115 | 140 | 185 | 142 | |
| 14 | 165 | 165 | 165 | 190 | 250 | 206 | |
| 16 | 210 | 220 | 190 | 234 | 315 | 250 | |
| 18 | 253 | 280 | 250 | 305 | 414 | 320 | |
| 20 | 315 | 325 | 315 | 375 | 515 | 400 | |
| 22 | 370 | 370 | 370 | 435 | 640 | 465 | |
| 24 | 490 | 490 | 475 | 550 | 800 | 580 | |
| CLASS | NPS | SORF | NPT Flanges | SW | Loose | BLRF | WN |
| 600# | ½ | 2 | 2 | 2 | 2 | 3 | 3 |
| ¾ | 3 | 3 | 3 | 3 | 4 | 4 | |
| 1 | 4 | 4 | 4 | 4 | 4 | 4 | |
| 1¼ | 5 | 5 | 5 | 5 | 6 | 6 | |
| 1½ | 7 | 7 | 7 | 7 | 8 | 8 | |
| 2 | 9 | 9 | 9 | 9 | 10 | 12 | |
| 2½ | 13 | 13 | 13 | 12 | 15 | 18 | |
| 3 | 16 | 16 | 16 | 15 | 20 | 23 | |
| 3½ | 21 | 21 | 21 | 20 | 29 | 26 | |
| 4 | 37 | 37 | 37 | 36 | 41 | 42 | |
| 5 | 63 | 63 | 63 | 63 | 68 | 68 | |
| 6 | 80 | 80 | 80 | 78 | 86 | 81 | |
| 8 | 115 | 15 | 15 | 112 | 140 | 120 | |
| 10 | 177 | 177 | 177 | 195 | 231 | 190 | |
| 12 | 215 | 215 | 215 | 240 | 295 | 226 | |
| 14 | 259 | 259 | 259 | 290 | 378 | 347 | |
| 16 | 366 | 366 | 366 | 400 | 527 | 481 | |
| 18 | 476 | 476 | 476 | 469 | 665 | 555 | |
| 20 | 612 | 612 | 612 | 604 | 855 | 690 | |
| 22 | 590 | 590 | 590 | 670 | 1000 | 720 | |
| 24 | 876 | 876 | 876 | 866 | 1250 | 977 |