Equivalent designations UNS N10675 DIN W. Nr. 2.4600 Form ASTM Rod B 335 Plate, sheet and strip B 333, B 906 Seamless pipe and tube B 622 Welded pipe B 619, B 775 Welded tube B 626, B 751 Welding fitting B 366 Forged or rolled pipe flange and forged fitting B 462 Billet and bar for reforging B 472 Forging B 564 Chemical composition % Ni Mo Ni+Mo Cr Fe W Co C Mn Si P S Al Ti Cu Nb Ta V Zr min 65.0 27.0 94.0 1.0 1.0 max 32.0 98.0 3.0 3.0 3.0 3.0 0.010 3.0 0.10 0.030 0.010 0.50 0.20 0.20 0.20 0.20 0.20 0.10 Physical properties Density 9.22 g/cm3 Melting range 1370-1418℃ Features: Hastelloy B-3 has outstanding resistance to hydrochloric acid at all concentrations and temperatures. It also resists sulfuric, phosphoric, formic, acetic acids and other nonoxidizing media. It has excellent resistance to pitting corrosion, stress corrosion cracking, and knife line and weld heat-affected zone attack. Hastelloy B-3 has greater thermal stability than Hastelloy B-2. Applications: Hastelloy B-3 is suitable for the applications where Hastelloy B-2 is required. Like Hastelloy B-2, Hastelloy B-3 should not be used in the presence of ferric or cupric salts as these salts may cause rapid corrosion attack.