Product Code : AL-Inco27-7-NN-FA
INCOLOY® alloy 27-7MO (UNS S31277; EP 1,263,999 B1) is an advanced 7% molybdenum super-austenitic stainless steel offering corrosion resistance in most environments superior to 6% molybdenum super-austenitic stainless steels. In many environments alloy 27-7MO offers resistance approaching that of much more highly alloyed materials such as INCONEL alloys 625, 22, and C-276. Alloy 27-7MO products typically contain 27% nickel, 22% chromium, 7.2% molybdenum, and 0.34% nitrogen. Its limiting chemical composition is presented in Table 1. The alloy's content of nickel and nitrogen produce a stable austenitic structure. By virtue of its content of molybdenum, chromium, and nitrogen, alloy 27-7MO offers excellent resistance to pitting and crevice corrosion. The nickel, nitrogen, and molybdenum provide resistance to reducing media while a high content of chromium offers resistance to oxidizing media. Alloy 27-7MO performs well in mixed acid environments, especially those containing oxidizing and reducing acids. The alloy's contents of nickel and nitrogen result in resistance to stress corrosion cracking and attack by caustic media.
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Product Information
INCOLOY® alloy 27-7MO (UNS S31277; EP 1,263,999 B1) is an advanced 7% molybdenum super-austenitic stainless steel offering corrosion resistance in most environments superior to 6% molybdenum super-austenitic stainless steels. In many environments alloy 27-7MO offers resistance approaching that of much more highly alloyed materials such as INCONEL alloys 625, 22, and C-276. Alloy 27-7MO products typically contain 27% nickel, 22% chromium, 7.2% molybdenum, and 0.34% nitrogen. Its limiting chemical composition is presented in Table 1. The alloy's content of nickel and nitrogen produce a stable austenitic structure. By virtue of its content of molybdenum, chromium, and nitrogen, alloy 27-7MO offers excellent resistance to pitting and crevice corrosion. The nickel, nitrogen, and molybdenum provide resistance to reducing media while a high content of chromium offers resistance to oxidizing media. Alloy 27-7MO performs well in mixed acid environments, especially those containing oxidizing and reducing acids. The alloy's contents of nickel and nitrogen result in resistance to stress corrosion cracking and attack by caustic media. Alloy 27-7MO offers excellent resistance to corrosion in seawater and brine. It also resists stress corrosion cracking in all concentrations of sodium chloride up to saturation at the boiling point. It is resistant to the aggressive media encountered in air pollution control systems such as flue gas desulfurization equipment for high-sulfur coal-fired electric power utilities. Applications for INCOLOY alloy 27-7MO are found in the pollution control, power, marine, chemical processing, pulp and paper and oil and gas industries. The alloy offers a unique combination of corrosion resistance, high strength and ease of fabrication at an economical price. Alloy 27-7MO is available in standard product forms including plate, sheet, rod, bar, wire rod, pipe, tube, and forging stock
Synonyms
Incoloy 27-7MO Flange Specification
Size：customized
Purity: customized
Per your request or drawing
We can customized as required
| Metal Type | UNS S31277 |
| Bar | ASTM A 479/ASME SA 479 |
| Wire | ASTM A 479/ASME SA 479 |
| Sheet | ASTM A 240/ASME SA 240 |
| Plate | ASTM A 240/ASME SA 240 |
| Tube | ASTM A 213/ASME SA 213 (Tube), ASTM A 249/ASME SA 249 |
| Pipe | ASTM A 312/ASME SA 312 |
| Fitting | ASTM A182 |
| Forging | ASTM A 479/ASME SA 479, ASTM A182 |
| Weld Wire | |
| Weld Electrode | |
| ASME CODE | Allowable design stresses for ASME Boiler and PressureVessel Code construction are defined in ASME Code Case 2458. |
Properties（Theoretical）
| Density | 8.02g/cm³ | 0.289lb/in³ |
| Permeability at 200 oersted (15.9 kA/m) | 1.004 | |
| Permeability at 200 oersted (15.9 kA/m) at -22°F (<-30°C) | <1.01(Annealed) | <1.01(50% cold worked) |
| Specific Heat | 454J/kg °C | 0.109Btu/lb °F |
| Electrical Resistivity at room temp., mill annealed condition | 604ohm•circ mil/ft | 100µohm•cm |
Chemical Composition, %
| Fe | Ni | Cr | Mo | N | Cu | Si | P | C | S | Mn | |
| Min | Balance | 26 | 20.5 | 6.5 | 0.3 | 0.5 | |||||
| Max | 28 | 23 | 8 | 0.4 | 1.5 | 0.5 | 0.03 | 0.02 | 0.01 | 3 |
Applications of Incoloy 27-7MO Flange
Applications for INCOLOY alloy 27-7MO are found in the pollution control, power, marine, chemical processing, pulp and paper and oil and gas industries. The alloy offers a unique combination of corrosion resistance, high strength and ease of fabrication at an economical price. Alloy 27-7MO is available in standard product forms including plate, sheet, rod, bar.
Packing of Incoloy 27-7MO Flange
Standard Packing:
Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes Special package is available on request.
ATTs’ Incoloy 27-7MO Flange is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.
