Description Alloy 28 (UNS N08028, W. Nr. 1.4563) is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has excellent resistance to both reducing and oxidizing acids, to stress-corrosion cracking, and to localise attack such as pitting and crevice corrosion. The alloy are especially resistant to sulphuric and phosphoric acid. Used for chemical processing, pollution control equipment, oil and gas well piping, nuclear fuel reprocessing, acid production and pickling equipment. Standards
UNS N08028
ISO 4563-080-28-I
EN number 1.4563
EN name X 1 NiCrMoCu 31-27-4
W.Nr. 1.4563
DIN X 1 NiCrMoCuN 31 27 4
SS 2584
AFNOR Z1NCDU31-27-03
Approvals
Approved by the American Society of Mechanical Engineers (ASME) for use in accordance with ASME Boiler and Pressure Vessel Code, section VIII, division 1.
VdTÜV-Werkstoffblatt 483 (Austenitischer Walz- und Schmiedestahl)
NACE MR 0103 (Materials Resistant to Sulfide Stress Cracking in Corrosive Petroleum Refining Environments)
NACE MR0175/ISO 15156 (sulphide stress cracking resistant material for oil field equipment)
NGS 1608 (Nordic rules for application) valid for Sandvik Sanicro 28 made by Sandvik