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Stainless Steel - Superferritic |
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Superferritic Stainless Steels have a structure and properties similar to the common ferritic alloys, but they contain enhanced levels of chromium and molybdenum to increase their resistance to high temperatures and corrosive environments such as seawater.
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Stainless Steel - Superferritic | |
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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 29-4C®
S44735 |
Welded condenser tubing used in seawater and other applications requiring extreme resistance to chloride pitting, crevice corrosion and stress corrosion cracking | C 0.03 max, Mn 1.0 max, P 0.04 max, S 0.03 max, Si 1.0 max, Cr 28.0-30.0, Ni 1.0 max, Mo 3.6-4.2, N 0.045 max, (Ti+Cb) 0.2-1.0, (Ti+Cb) 6x(C+N) min, Fe Balance | ASTM A240 | 0.277 (7.67) |
80 min (550 min) |
60 min (415 min) |
18 min | 25 Rockwell C max | ||
| E-BRITE ®
S44627 |
Solenoid valves, Pressure vessels, Coker components, Heat exchangers, Air preheaters, Heat recuperators | C 0.01 max, Mn 0.4 max, Si 0.4 max, Cr 25.0-27.5, Ni 0.5 max, Mo 0.75-1.5, N 0.015 max, Cu 0.2 max, Cb 0.05-0.2, (Ni+Cu) 0.5 max, Fe Balance | ASTM A-240 ASME SA-240 | 0.280 (7.76) |
65 min (450 min) |
40 min (275 min) |
22 min | 90 Rockwell B max | ||
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