Monel 400
Description:
Monel is a group of nickel alloys, composed mostly of nickel (up to 67%) copper and lesser amounts of iron, manganese, carbon, and silicon. It is stronger than pure nickel. Monel alloys are resistant to corrosion by many agents, including rapidly flowing seawater, hydrofluoric acid, sulfuric acid, and alkalies.
Monel can be fabricated readily by hot- and cold-working, machining, and welding. Major Applications are uses in marine engineering, chemical and hydrocarbon processing equipment, valves, pumps, shafts, fittings, fasteners, and heat exchangers.
It is a relatively alloy, with cost ranging 5 to 10 times the cost of copper and nickel, thus it's use is limited to those applications where it cannot be replaced with lower cost alternatives.
Analysis in Weight Percent:
Ni (+ Co) 63.0 min Cu 28.0 - 34.0
Fe 2.5 Mn 0.20
Si 0.50 S 0.024
C 0.30
Mechanical Properties (at Room Temperature):
MPa ksi
Ultimate Tensile Strength: 550 80
Yield Strength (0.2% offset): 240 35
GPa 106 psi
Elastic Modulus (Tension): 180 26
Elongation in 50mm (2 in): 40%
Hardness: 110 - 150 HB
Physical Properties (at Room Temperature):
oC oF
Melting Point/Range: 1300 - 1350 2370 - 2460
Curie Temperature: 20-50 70-120
J/kg ⋅ K Btu/lb ⋅ oF
Specific Heat: 427 0.102
µm/m ⋅ K µin/in ⋅ oF
Average Coefficient of Thermal Expansion: 13.9 7.7
W/m ⋅ K Btu ⋅ in/ft2 ⋅ h ⋅ oF
Thermal Conductivity: 21.8 151
Electrical Resistivity (nΩ ⋅ m): 547
Density (g/cm3): 8.80
ALLOYS 
