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Monel® 400
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Monel® 400

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A Nickel-Copper alloy with high strength and excellent corrosion resistance in a range of acidic and alkaline environments and especially suitable for reducing conditions. It also has good ductility and thermal conductivity.

Chemical Composition Specifications Designations Key Features Typical Applications
Element Min % Max %
C 0.3
Si 0.50
Mn 2.00
S 0.024
Cu 28.00 34.00
Fe 2.50
Ni+Co 63.00 70.00
Co 2.0
AMS 4730
ASTM B164
BS 3075 NA 13
BS 3076 NA 13
DTD 204B
ISO 15156-3
(NACE MR 0175)
QQ-N-281
W.Nr 2.4361
W.Nr 2.4360
UNS N04400
AWS 040
Excellent corrosion resistance in a wide range of acidic & alkaline environments
Especially suitable for reducing conditions
Good ductility & thermal conductivity
Good for sea water applications
Marine Engineering
Chemical Processing
Hydro-carbon Processing
Heat Exchangers
Valves
Pumps
Density 8.8 g/cm³ 0.318 lb/in³
Melting Point 1350°C 2460°F
Coefficient of Expansion 13.9 μm/m °C (20 – 100°C) 7.7 x 10-6 in/in °F (70 – 212°F)
Modulus of Rigidity 65.3 kN/mm² 9471 ksi
Modulus of Elasticity 173 kN/mm² 25092 ksi
Heat Treatment of Finished Parts
Condition as supplied by Alloy Wire Type Temperature Time (Hr) Cooling
°C °F
Annealed or Spring Temper Stress Relieve 300 – 320 570 – 610 0.5 – 1 Air
Properties
Condition Approx. tensile strength Approx. operating temperature
N/mm² ksi °C °F
Annealed 400 – 600 58 – 87 -200 to +230 -330 to +445
Spring Temper 850 – 1050 123 – 152 -200 to +230 -330 to +445

The above tensile strength ranges are typical. If you require different please ask.

*Trade name of Special Metals Group of Companies

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