Alloy K500 (Monel K500)
Characteristics
ALLOYK500 is a Ni-Cu alloy with age-hardening properties imparted by alloying additions of aluminium and titanium. Its basic composition is similar to that of ALLOY400 but the alloying additions make it age hardenable under
controlled conditions of temperature and time.
Characteristics of ALLOY K500
After age-hardening of characeristics of ALLOY K500
Corrosion resistance
In general, the corrosion resistance of Alloy K500 is similar to that of ALLOY400. Excellent resistance is shown to a wide range of media from pure water to mineral acids, salts and alkalis. Alloy K500 is virtually immune to chloride-ion stress-corrosion cracking. In the aged condition, the alloy may be susceptible to stress-corrosion cracking in moist, aerated hydrofluoric acid vapour at stresses near the yield strength. In high-velocity seawater and in marine atmospheres, good corrosion resistance is shown but, in slow-moving or stagnant seawater, pitting may occur. Alloy K500 also shows good resistance in sour-gas environments.
Applications
ALLOYK500 finds wide application in the marine, chemical, petrochemical and shipbuilding industries.
Typical applications are:
environments - high strength and resistance to seawater
in smaller diameter shafts) and resistance to flowingseawater
waters - resistance to chloride-containing environments
properties and resistance to seawater
collars, valves and instrumentation sleeves - resistance to
chloride-containing media and sour-gas environments