Equivalent designations UNS N06625 DIN W. Nr. 2.4856 Form ASTM Rod and bar B 446 Plate, sheet and strip B 443, B 906 Seamless pipe and tube B 444, B 829 Welded pipe B 705, B 775 Welded tube B 704, B 751 Welding fitting B 366 Billet and bar for reforging B 472 Forging B 564 Chemical composition % Ni Cr Mo Fe C Mn Si P S Co Nb+Ta Al Ti min 58.0 20.0 8.0 3.15 max 23.0 10.0 5.0 0.10 0.50 0.50 0.015 0.015 1.00 4.15 0.40 0.40 Physical properties Density 8.44 g/cm3 Melting range 1290-1350℃ Features: Inconel 625 has excellent strength at temperatures up to 816℃. At higher temperatures, its strength is generally lower than that of other solid solution strengthened alloys. Inconel 625 has good oxidation resistance at temperatures up to 980℃ and shows good resistance to aqueous corrosion, but is relatively moderate compared to other more capable corrosion resistant alloys. Applications: Chemical process industry and sea water application. Inconel 625 is used in short term applications at temperatures up to 816℃. For long term service, it is best restricted to a maximum of 593℃, because long term exposure above 593℃ will result in significant embrittlement.