NC1254 Incoloy 27-7MO (alloy 27-7MO, UNS S31277) pipe/pipe

Incoloy 27-7MO (Alloy 27-7MO, UNS S31277) Pipe Description:

Inconel®, Incoloy® and Monel® are registered trademarks of Special Metals Corporation and its subsidiaries.
The Incoloy alloy 27-7MO is a superaustenitic stainless steel containing 7% molybdenum. In most environments it demonstrates a higher corrosion resistance than superaustenitic steels with 6% molybdenum. In several environments, Incoloy 27-7MO (UNS S31277) exhibits corrosion resistance that approaches that of materials with a higher alloy content such as INCONEL alloys 625, 22 and C-276.
Incoloy 27-7MO products typically contain 27% nickel, 22% chromium, 7.2% molybdenum and 0.34% nitrogen. Given the molybdenum, chromium and nitrogen levels, the 27-7MO alloy offers quantifiable resistance against pitting and crevice corrosion. Nickel, nitrogen and molybdenum impart resistance to reducing media, while the elevated chromium content provides resistance to oxidising media. Consequently, Incoloy 27-7MO is suitable for use in mixed acidic environments, particularly those that contain both oxidising and reducing acids.
Other Trade Names: Alloy 27-7MO, UNS S31277

Specifications for Pipes Fabricated from Incoloy Alloy 27-7MO:

Metal type: UNS S31277
Standard: ASTM A 213/ASME SA 213 (pipe), ASTM A 249/ASME SA 249 (pipe), ASTM A 312/ASME SA 312 (pipe)

Chemical Composition, %.

Applications of Incoloy 27-7MO:

Incoloy 27-7MO offers a combination of corrosion resistance, high strength and ease of fabrication. Consequently, it is used in various industrial sectors including environmental protection, energy, shipbuilding, chemical processing, pulp and paper manufacture and oil and gas production.

1. Chemical Processing:
   • Widely employed in the chemical industry given its resistance to corrosion in aggressive chemical environments.
2. Shipbuilding:
   • Utilised in ship construction where resistance to seawater and salt mist corrosion is required.
3. Pollution Control Facilities:
   • Used in the construction of environmental protection installations given its resistance to corrosive gases and chemicals.
4. Pulp and Paper Industry:
   • Implemented in components for pulp and paper processing, providing corrosion resistance in corrosive manufacturing environments.
5. Oil and Gas Production:
   • Applied in oil and gas extraction, where resistance to corrosive elements contributes to the longevity of equipment.