UNS N06059 Nickel-chromium-molybdenum alloy encyclopedia
UNS N06059 alloy is a nickel-chromium-molybdenum alloy with excellent corrosion resistance and high mechanical strength.
The alloy has excellent resistance to both oxidizing and reducing media, and has excellent resistance to chloride pitting and stress corrosion cracking. The alloy is widely used in the harshest environments. Applications include: flue gas scrubber components, bleaching plant and digester components for the pulp and paper industry, sour gas treatment equipment, sulfuric acid coolers, waste incinerators, and seawater equipment.
UNS N06059 density 860 g/cm 3
UNS N06059 Chemical Composition
NI margin.
cr 22.0-24.0
mn 0.50 max
mo 15.0-16.5
al 0.1-0.4
cu 0.50 max
si 0.10 max
fe 1.5 max
c 0.010 max
co 0.30 max
p 0.015 max
s 0.010 max
UNS N06059 standard
Sheet strip B 575 SB 575
Welded pipe B 619 SB 619
Forgings B 564 SB 564
Bar B 574 SB 574
Seamless tube B 622 SB 622
UNS N06059 Corrosion Resistance
UNS N06059 alloy has excellent corrosion resistance in a variety of aggressive environments. The low silicon, carbon and iron content makes this alloy very resistant to precipitation of harmful phases.
UNS N06059 formability
Thermal processing should be carried out in the temperature range of 1740-2150°F (950-1180°C). The material should be water quenched to avoid precipitation. It is recommended to anneal after hot working to restore maximum corrosion resistance. If cold working is performed, interstage annealing may be required to soften the material.
UNS N06059 heat treatment
UNS N06059 alloy should be solution annealed between 2010 and 2150°F (1100-1180°C) and cooled rapidly. Water quenching is best used for maximum corrosion resistance.
UNS N06059 welding
UNS N06059 alloy can be welded by conventional processes, including GTAW, wire GTAW, plasma arc, SMAW, and MIG. Matching filler metals are usually used. Care should be taken that the interlayer temperature does not exceed 300°F (150°C).