Monel 400  

Monel Alloy 400 is a solid-solution alloy that can be hardened only by cold working. It has high strength and toughness over a wide temperature range and excellent resistance to many corrosive environments.

Monel Alloy 400 is widely used in many fields, especially marine and chemical processing. Typical applications are valves and pumps, pump and propeller shafts, marine fixtures and fasteners, electrical and electronic components, springs, chemical processing equipment, gasoline and fresh water tanks, crude petroleum stills, process vessels and piping, boiler feed water heaters and other heat exchangers, and deaerating heaters.

Chemical Composition of Monel Alloy 400 :

Element %
Nickel (plus Cobalt) 63.0 min
Carbon 0.3 max
Manganese 2.0 max
Iron 2.5 max
Sulfur 0.024 max
Silicon 0.5 max
Copper 28.0 – 34.0

Silverin 400(tm)
Nickelvac 400(tm)
CM 400(tm)


AMS 4574 ASTM B164 CLASS A DIN 2.4360
AMS 4575 ASTM B165 DIN 2.4366
AMS 4675 ASTM B366 MIL N-24106
AMS 4730 ASTM B513 MIL T-1368
AMS 4731 ASTM B564 MIL T-23520
ASTM B127  ASTM F467 QQ N281
ASTM B163  ASTM F468 UNS N04400
    ASTM F96


Carbon 0.3 max

28 - 34

Iron 2.5 max


Silicon 0.5 max
Sulphur 0.024 max


  • Principal Design Features :
    This alloy of nickel-copper is resistant to sea water corrosion as well as to a variety of acids and other corrosive media.

  • Applications :
    Marine fixtures, pumps, valves and piping systems for sea water application. Because of its good corrosion resistance it is also used in chemical plant equipment.

  • Mechanical Data :
    Form Plate
    Condition Test Specimen Annealed
    Temper 70
    Tensile Strength 83
    Yield Strength 39
    Elongation 42
    Rockwell B68

  • Forms & shapes
    Wire, Sheet, Plate, Strip, Round Bars, Hexagonal, Flats, Square, Angle, Channel, Blanks, Tubes, Billets, Pipes, Pipe Fittings, Forging Rings, Special Shape Forgings, Fasteners Etc.

Nickel & Alloy
Aluminum & Alloy
Stainless Steel
Titanium & Alloy
Copper & Alloy