A-1 Wire Tech, Inc.
MONEL® ALLOY 400

A nickel-copper alloy with high strength and excellent corrosion resistance in a range of media including sea water, hydrofluoric acid, sulfuric acid and alkalies. Used for marine engineering, chemical and hydrocarbon processing equipment, valves, pumps, shafts, fittings, fasteners, and heat exchangers. Standard product forms are round, hexagon, flats, forging stock, pipe, tube, plate, sheet, strip, and wire.


Typical Mechanical Properties

Limiting Chemical Composition, %

Nia - 63.0 min.
Cu - 28.0-34.0
Fe - 2.5 max.
Mn - 2.0 max.
C - 0.3 max.
S - 0.024 max.
Si - 0.5 max.
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aPlus Co.

Typical Mechanical Properties (Annealed)

Tensile Strength, psi •••••• 80,000
MPa •••••• 550
Yield Strength(0.2%Offset), psi •••••• 35,000
MPa •••••• 240
Elongation,% •••••• 40

Physical Constants and Thermal Properties

Density, Ib/in3 •••••• 0.318
g/cm3 •••••• 8.80
Melting Range, °F •••••• 2370 – 2460
°C •••••• 1300 – 1350
Specific Heat, Btu/lb •°F •••••• 0.102
J/kg • °C •••••• 427
Curie Temperature, °F •••••• 70 – 120
°C •••••• 20 – 50
Coefficient of Expansion,
70 – 200°F, 10-6 in/in • °F •••••• 7.7
21 – 93°C, μm/m • °C •••••• 13.9
Thermal Conductivity, Btu • in/ft2•h•°F •••••• 151
W/m• °C •••••• 21.8
Electrical Resistivity, ohm• circ mil/ft •••••• 329
μΩ•m •••••• 0.547

Specifications and Designation

UNS N04400
BS 3072 – 3076 (NA13)
ASTM B 127, B 163 – B 165,
B 366, B 564, B 725, B 730,
B 751, B 775, B 829
ASME SB-127, SB-163 – SB-165,
SB-366, SB-564, SB-725,
SB-730, SB-751, SB-775,
SB-829
AECMA Pr EN 2305
SAE AMS 4544, 4574,
4675, 4730, 4731, 7233
DIN 17743, 17750 – 17754
Werkstoff Nr. 2.4360,
2.4361
VdTÜV 263
QQ-N 281
NACE MR-01-75


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