UNS N08367
UNS N08367
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- Incoloy 25-6HN
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Learn about Incoloy 25-6HN
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Introduction
Main Standards
Chemical Composition
Data Sheet
Applications
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Incoloy 25-6HN Introduction
Solid Solution
Strengthened Alloy
Iron
Nickel
Chromium
Molybdenum
Nitrogen
Corrosion
Resistance
73
Mechanical
Behavior
69
Purity
94
Corrosion Resistance
Sulfuric
Acid
Hydrochloric
Acid
Hydrofluoric
Acid
Phosphoric
Acid
Nitric
Acid
Organic
Acids
Alkalies
and Salts
Seawater
Overview
As a leading supplier & manufacturer in China, AEETHER supply cost-effective Incoloy 25-6HN Products.
INCOLOY alloy 25-6HN is a super-austenitic stainless steel containing 6% molybdenum. The alloy’s properties are enhanced by its content of nitrogen. Its high content of nickel results in thermal stability and resistance to stress corrosion cracking. Designated as UNS N08367, alloy 25-6HN directly competes with similar super-austenitic stainless steels. Alloy 25-6HN is a new addition to Special Metals existing line of high performance, super-austenitic stainless steels, INCOLOY alloys 25-6MO and 27-7MO.
Alloy 25-6HN offers significantly improved strength and corrosion resistance in most environments over conventional austenitic stainless steels such as AISI 304 and 316L. Typical applications include welded tubes for heat exchangers for chemical processing and marine applications and for desalination systems, plate and sheet for flue gas desulfurization equipment for coal-fired power plants and plate for reaction vessels for pharmaceutical production.
Corrosion Resistance
INCOLOY alloy 25-6HN offers resistance to many modes of attack in a variety of aggressive environments. It is especially resistant to localized attack (crevice and pitting corrosion) in acid / halide media. Alloy 25-6HN also resists microbially-induced corrosion. With 25% nickel, the alloy is much more resistant to chlorideinduced stress corrosion cracking than austenitic stainless steels (AISI 300 grades).
The values for CPT and CCT of welded alloys are strongly influenced by the choice of filler material. While alloy 25 -6HN is normally joined with INCONEL filler metal 625, higher CPT values can be obtained with the moreresistant INCO-WELD 686CPT filler metal. Annealing after fabrication can also have a positive influence on the corrosion resistance of welded components.
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Incoloy 25-6HN Standards
ASTM B675
Welded Pipe
ASTM B804
Welded Pipe
ASTM B676
Welded Tube
ASTM B366
Welded Fittings
ASTM B462
Forged Flange & Fittings
ASTM B691
Rod, Bar, and Wire
ASTM B564
Forgings
ASTM B472
Forging Stock, Billet
ASTM B688
Plate, Sheet and Strip
ASTM A240
Plate, Sheet and Strip
Incoloy 25-6HN Chemical Composition
Data Sheet
Physical Properties
Density | g/cm3 | 8.02 |
---|---|---|
lb/in.3 | 0.290 | |
Melting Range | °F | 2470 - 2560 |
Magnetic Permeability | 200 Oersteds at RT | 1.003 |
Coefficient of Thermal Expansion | 68-212°F | 8.49 in/in•°F x 10-6 |
Mechanical Properties
Temp. (°F) | Property | 25-6HN |
---|---|---|
77 | Yield Strength (ksi) | 55 |
Tensile Strength (ksi) | 107 | |
Elongation (%) | 48 | |
300 | Yield Strength (ksi) | 49 |
Tensile Strength (ksi) | 93 | |
Elongation (%) | 47 | |
400 | Yield Strength (ksi) | 46 |
Tensile Strength (ksi) | 89 | |
Elongation (%) | 47 | |
500 | Yield Strength (ksi) | 46 |
Tensile Strength (ksi) | 86 | |
Elongation (%) | 47 | |
600 | Yield Strength (ksi) | 43 |
Tensile Strength (ksi) | 87 | |
Elongation (%) | 46 | |
800 | Yield Strength (ksi) | 40 |
Tensile Strength (ksi) | 84 | |
Elongation (%) | 45 | |
1000 | Yield Strength (ksi) | 43 |
Tensile Strength (ksi) | 80 | |
Elongation (%) | 48 |
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