ASTM A789 ASME SA 789 SAF2507 UNS S32750 (EN 10216 - 5 1.4410) Stainless Steel is  super duplex stainless steel with 25% chromium, 4% molybdenum, and 7% nickel  designed for demanding applications which require exceptional strength and corrosion resistance, such as chemical process, petrochemical, and seawater equipment. The steel has excellent resistance to   chloride stress corrosion cracking , high   thermal conductivity , and a low coefficient of thermal expansion.
Applications
Offshore platforms
Fire-fighting systems
Injection & ballast water systems
Heat exchangers
Oil and gas
Chemical processing
General Engineering
Chemical Composition

Available sizes
From 3/8" to 12" OD in seamless form
From sch5s to schxxs wall thickness
5.8m, 6m, 11.8m, 5-7m, custom, sawing to size

Quality guarantee
Chemical composition test by PMI, Metallographic Analysis,Tension test, flaring test for seamless tubes, flange test for welded tubes, hardness test, reverse flattening test for welded tubes, ultrasonic test, X-ray inspection, dimensional inspection, visual examination, eddy current test.
Mill's test certificate: EN10204 3.1