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A super-austenitic nickel-chromium-molybdenum-nitrogen stainless steel, AL-6XN® has outstanding corrosion resistance in a wide range of applications.

With many years of proven seawater service and 50% higher strength than stainless steel, AL-6XN® is the alloy of choice in high chloride, seawater and brine applications.


Product FormSize Range FromSize Range To
AL-6XN® sheet & plate0.6 mm82.6 mm
AL-6XN® pipe0.5 in16 in
AL-6XN® round bar9.5 mm203.2 mm
AL-6XN® coil-1 mm
AL-6XN® pipe fittings-1 mm

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Pipe Fittings

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Sheet & Plate

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Round Bar

Chemical Analysis



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Ideal for applications in the Oil & Gas industry

AL-6XN® can be used in a variety of applications, here are just a few examples:

  • FGD scrubbers
  • Reverse osmosis desalination
  • Distillation columns
  • Heat exchangers
  • Biopharm tanks and fermenters
  • Pressure vessels
  • Manways
  • Agitators and mixers
  • Seawater coolers in nuclear plants

About AL-6XN®

AL-6XN® (UNS N08367) is a 6% molybdenum, low carbon, nitrogen-bearing super-austenitic stainless alloy. The alloy was originally designed for seawater applications. AL-6XN® has also been successfully used in a broad range of very corrosive environments including the rapidly developing biopharm markets.

The high strength and corrosion resistance of the AL-6XN® 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.


8.055 g/cm³
Melting Point:
Electrical Resistivity:
8.89 x 10^ -7 Ω⋅m


UNS Number:
ASTM A182, A240,A249, A276, A312, A479, B462, B472, B564, B675, B676, B688, B690, B691, B366, B804
Download the AL-6XN® Data Sheet Download

FAQs & Resources

Stainless steel is the generic name of different grades of steels (containing low carbon and iron), used primarily because of their corrosion resistance. All stainless steels share a minimum percentage of 10.5% chromium element. Chromium (Cr), usually a deciding factor, nickel and molybdenum are commonly added to steels to improve their corrosion resistant and make them ‘stainless’. Most of the stainless steel grades will have a UNS number that start off with letter ‘S’ such as UNS S32100 (Alloy 321) and UNS S31008/S31009 (Alloy 310/310S).

You can fill in ‘Request a Quote’ form online on most of the pages on our website or click ‘contact us’. Alternatively, you can also call us, fax your enquiry to us or send an email to enquiries@neonickel.com

After the order has been processed, domestic shipping usually takes 1-2 days to deliver and 2-4 days for international shipment. NeoNickel offers express delivery option. Please ask your sales contact for more information.

Request a Quote

Fill in our online form to get a fast quote. Got a technical question? Contact us on techsales@neonickel.com or for more general enquiries please email us at enquiries@neonickel.com