Alloy K-500
Equivalent designations
UNS N05500
DIN W. Nr. 2.4375
Form
ASTM
Rod, bar, wire and forging
B 865
Chemical composition
%
Ni
Cu
Fe
C
Mn
Si
S
Al
Ti
min
63.0
27.0
2.30
0.35
max
33.0
2.0
0.18
1.5
0.50
0.010
3.15
0.85
Physical properties
Density
8.44 g/cm3
Melting range
1315-1350℃
Features: Monel K-500 combines Monel 400’s excellent corrosion resistance with greater strength and hardness as a result of adding aluminum and titanium and proper heat treatment to cause precipitation hardening. It is nonmagnetic at temperatures as low as -101℃. Monel K-500 has excellent dimensional stability which is very useful in high precision devices. Like Monel 400, it does not undergo ductile-to-brittle transition at cryogenic temperatures as low as that of liquid hydrogen. Its tensile and yield strengths increase while ductility and toughness are only slightly impaired.
Applications: Chemical process pump and valve components; paper production pulp processing doctor blades and scrapers; marine engineering chains, cables, fasteners and springs; electronic components; and oil and gas production non-magnetic housings, pump shafts and impellers.