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Specialty Metals That Make Our World TM

Stainless Steel - Superaustenitic

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.


Stainless Steel - Superaustenitic
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
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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