Monel 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.
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 feedwater heaters and other heat exchangers; and deaerating heaters

Monel 400 Characteristics

1; Resistant to seawater and steam at high temperatures

2; Excellent resistance to rapidly flowing brackish water or seawater

3; Excellent resistance to stress corrosion cracking in most freshwaters

4; Particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated

5; Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations, but is seldom the material of choice for these acids

6; Excellent resistance to neutral and alkaline salt

7; Resistance to chloride induced stress corrosion cracking

8; Good mechanical properties from sub-zero temperatures up to 1020° F

9; High resistance to alkalis

Monel 400 Applications

1; Marine engineering

2; Chemical and hydrocarbon processing equipment

3; Gasoline and freshwater tanks

4; Crude petroleum stills

5; De-aerating heaters

6; Boiler feed water heaters and other heat exchangers

7; Valves, pumps, shafts, fittings, and fasteners

8; Industrial heat exchangers

9; Chlorinated solvents

10; Crude oil distillation towers

• Chemical Properties of Monel 400

• Application

. Sour-gas service applications
. Oil and gas production safety lifts and valves
. Oil-well tools and instruments like drill collars
. Oil well industry
. Doctor blades and scrapers
. Chains, cables, springs, valve trim, fasteners for marine service
. Pump shafts and impellers in marine service

• ,Mechanical Properties

  Typical Room Temperature Tensile Properties of Annealed Material

  Product Form	Condition	Tensile (ksi)	.2% Yield (ksi)	Elongation %	Hardness
  Rod & Bar	Hot-Finished/Aged	140-190	100-150	30-20	27-38 HRC
  Rod & Bar	Hot Finished/Annealed	90-110	40-60	45-25	75-90 HRB
  Rod & Bar	Hot Finished/Annealed/Aged	130-165	85-120	35-20	24-35 HRC
  Rod & Bar	Cold-Drawn/Aged	135-185	95-160	30-15	25-41 HRC
  Rod & Bar	Cold-Drawn/Annealed/Aged	130-190	85-120	30-20	24-35 HRC
  Plate	ot-Finished/Aged	140-180	100-135	30-20	27-37 HRC
  Sheet	Cold-Rolled/Annealed	90-105	40-65	45-25	85 HRB Max