Monel®
Monels® are a Nickel alloy material with addition of:
Copper (Cu)
Silicon (Si)
Manganese
These materials are also known as Monel, Alloy 400 and Alloy K500
Common Material Specifications
Ni Cu30 Fe3.5 Si1.5(+) (Monel 400)
A494 M-35-1 (UNS N24135) (Low Si –weldable)
A494 M-35-2 (UNS N04020)
BS3071: NA1
BS3071: NA3
OTHERS
Wrought equivalent Alloy 400 (UNS N04400)
Typical Properties
Tensile 430 N/mm2
Yield 170-205 N/mm2
Elongation 20-25%
Hardness HB 100-150
Density 8.8 g/cm3
Pressure temperature rating: B16.34 Group 3.4 15.9 bar class 150
Corrosion Properties
Good general corrosion for seawater service
Especially good for higher flow rates
Excellent trim material for NAB, gains cathodic protection with many alloys.
Not recommended for low velocities
Additional Uses & Comments
Variety of wrought/ bar specifications available, good for trim material. Excellent strength from K500
Used for oxygen service
Reasonable castabilty with suitable design and higher Si content
Weldable with lower Si content
Excellent for hydrofluoric & other acids (not nitric)
Cautions
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