Monel 400 is 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. Monel 400 is 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.
Unit of Measure



N/A Monel®


N/A Plates


N/A 2 3/4 inches


N/A 2.75 inches69.85 mm

Plate Weight per Unit Area

N/A 0.894 lbs/in²628.5442224 kg/m²

Nickel Alloy Compositions


N/A Monel 400

Basic Composition

N/A 1.1% Manganese 1.6% Iron 32.0% Copper 65.1% Nickel


N/A 0.319 lbs/in³8.84 g/cm³

ASTM Specification

N/A ASME SB-127 ASTM B127 Federal/Military QQ-N 281 CLA SAE 4544 UNS N04400

Typical Mechanical Properties

Tensile Strength

N/A 80000 psi550 MPa

Yield Strength (0.2% Offset)

N/A 35000 psi240 MPa


N/A 40 %

Melting Temperature Range

N/A 2370 to 2460 ºF1300 to 1350 ºC