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Stainless Steel - Superaustenitic |
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Superaustenitic stainless steels have the same structure as the common austenitic alloys, but they have enhanced levels of elements such as chromium, nickel, molybdenum, copper, and nitrogen, which give them superior strength and corrosion resistance.
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Stainless Steel - Superaustenitic | |
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| Alloy (UNS Designation) |
End Use | Composition nominal wt% |
Specifications | Density lb/in3 (g/cm3) |
Tensile Strength ksi. (MPa) |
0.2% Yield Strength ksi. (MPa) |
Elong- ation % |
Hardness | ||
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| AL 20™
N08020 |
Flue gas scrubbers, Sulphuric acid tanks and racks, Process piping, Heat exchangers, Manufacture of solvents/explosives/plastics/synthetic fibers/organic chemicals/pharmaceuticals | C 0.07 max, Mn 2.0 max, P 0.045 max, S 0.035 max, Si 1.0 max, Cr 19.0-21.0, Ni 32.0-38.0, Mo 2.0-3.0, Cu 3.0-4.0, Cb+Ta (8xC)min-1.0 max, Fe balance | ASTM B-463 ASME SB-463 | 0.292 (8.09) |
80 min (550 min) |
35 min (240 min) |
30 min | 95 Rockwell B max | ||
| AL 4565™
S34565 |
Desalination, seawater piping, offshore oil production, pollution control (FGD) | C 0.03 max, Mn 5.0-7.0, P 0.03 max, S 0.01 max, Si 1.0 max, Cr 23.0-25.0, Ni 16.0-18.0, Mo 4.0-5.0, N 0.4-0.6, Cb 0.1 max, Fe balance | ASTM A 240 ASME SA-240 | 0.29 (8.03) |
115 min (795 min) |
60 min (415 min) |
35 min | 100 Rockwell B max | ||
| AL 904L™
N08904 |
High efficiency furnace vent pipe, pulp & paper processing equipment, welding electrodes and fittings. | C 0.02 max, Mn 2.0 max, P 0.045 max, S 0.035 max, Si 1.0 max, Cr 19.0-23.0, Ni 23.0-28.0, Mo 4.0-5.0, N 0.1 max,Cu 1.0-2.0, Fe Balance | ASTM A-240 ASME SB-625 | 0.287 (7.95) |
71 min (490 min) |
31 min (220 min) |
35 min | 90 Rockwell B max | ||
| AL-6XN Plus™
N08367 |
Desalination, seawater piping and critical components on offshore oil platforms | C 0.030 max, Mn 2.0 max, P 0.040 max, S 0.030 max, Si 1.0 max, Cr 20.0-22.0, Ni 23.5-25.5, Mo 6.0-7.0, N 0.18-0.25, Cu 0.75 max, Fe Balance (PREn 50.0 min) | ASTM A 240, ASTM B 688 ASME SA-240, ASME SB-688 | 0.291 (8.06) |
100 min (Sheet) / 95 min (Plate) (690 min / 655 min) |
45 min (310 min) |
30 min | 100 Rockwell B max | ||
| AL-6XN®
N08367 |
Desalination, seawater piping and critical components on offshore oil platforms. | C 0.030 max, Mn 2.0 max, P 0.040 max, S 0.030 max, Si 1.0 max, Cr 20.0-22.0, Ni 23.5-25.5, Mo 6.0-7.0, N 0.18-0.25, Cu 0.75 max, Fe Balance | ASTM A 240, ASTM B 688 ASME SA-240, ASME SB-688 | 0.291 (8.06) |
100 min (sheet) / 95 min (plate) (690 min / 655 min) |
45 min (310 min) |
30 min | 100 Rockwell B max | ||
| JS700®
N08700 |
Wet scrubbers in municipal incinerators, wet-process phosphoric acid plants, chlorine dioxide pulp bleaching | C 0.04 max, Mn 2.0 max, P 0.04 max, S 0.03 max, Si 1.0 max, Cr 19.0-23.0, Ni 24.0-26.0, Mo 4.3-5.0, Cu 0.5, Cb (8xC)min-0.4 max, Fe Balance | ASTM A240 ASTM B599 | 0.287 (7.95) |
80 min (550 min) |
35 min (240 min) |
30 min | 90 Rockwell B max | ||
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