AL-6XN® (AL6XN / UNS N08367) Super-Austenitic Stainless Steel
- 6.3% molybdenum
- Over 25 years of proven seawater service
- Practical immunity to chloride stress cracking
- 50% stronger than stainless
- ASME coverage up to 800°F
- Easily welded
- Available in ALL product forms
AL-6XN® alloy (UNS N08367) is a low carbon, high purity, nitrogen-bearing "super-austenitic" stainless alloy. The AL-6XN alloy was designed to be a seawater resistant material and has since been demonstrated to be resistant to a broad range of very corrosive environments. The high strength and corrosion resistance of the AL6XN alloy make it a better choice than the conventional duplex stainless steels and a cost effective alternative to more expensive nickel-base alloys where excellent formability, weldability, strength and corrosion resistance are essential.
Performance Profile
The levels of chromium, molybdenum and nitrogen in AL-6XN all serve to provide resistance to acidic oxidizing chloride solutions previously achieved only by the nickel base alloys. High nickel (24%) and molybdenum (6.3%) contents make AL-6XN a solution to chloride ion stress corrosion cracking. Because of its nitrogen content, AL-6XN has greater tensile strength than common austenitic stainlesses, while retaining high ductility and impact strength. The ASME allowable stresses for AL-6XN are up to 75% higher than for 316L stainless, and more than twice those for the copper-nickel alloys.
Specifications
ASME B-31.1 Case 155-1,
ASME SA 182,
ASME SA 240,
ASME SA 249,
ASME SA 312,
ASME SA 479,
ASME SB 276,
ASME SB 366,
ASME SB 462,
ASME SB 564 ASME SB 675,
ASME SB 688 ASME SB 691,
ASME SB-366 Code Case N-438-3 ASTM A 182,
ASTM A 240,
ASTM A 249,
ASTM A 312,
ASTM A 479,
ASTM B 366 ASTM B 462,
ASTM B 472 ASTM B 564,
ASTM B 675,
ASTM B 676,
ASTM B 688 ASTM B 691 ASTM B 804 UNS N08367 Inventory
AL-6XN® Concentric Reducers, AL-6XN® Fittings, AL-6XN® Forged Billet, AL-6XN® Pipe, AL-6XN® Plate, AL-6XN® Round Bar, AL-6XN® Sheet, AL-6XN® Stub Ends, AL-6XN® Tees, AL-6XN® Weld Wire
Common Trade Names
AL6XN, UNS N08367 Features
- Excellent resistance to pitting and crevice corrosion in chloride solutions
- Practical immunity to stress corrosion cracking in NaCl environments
- High strength and toughness
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