Alloy 400

Hastelloy C-200

Alloy 400

Alloy 400, also known as Monel 400, is a nickel-copper alloy known for its excellent resistance to a wide range of corrosive environments.

With a composition that includes roughly 67% nickel and 23% copper, Alloy 400 is highly versatile, offering superb mechanical properties across different conditions. This alloy is widely used in applications where both strength and corrosion resistance are critical.

Alloy 400 is used for its excellent combination of corrosion resistance, strength, ductility and weldability. The corrosion resistance in seawater is especially good under high velocity conditions. Alloy 400 also is generally not susceptible to stress corrosion cracking.

AVAILABILITY SPECS
FLANGES 1/2" - 8" B160, B564, B16.5
FITTINGS B564
TUBING 1/4", 3/8", 1/2" B165
TENSILE REQUIREMENTS
TENSILE STRENGTH (KSI) 70 MIN.
YIELD STRENGTH 5" AND UNDER OVER 5" (KSI) 28 MIN.
(KSI) 25 MIN.
ELONGATION 35% MIN.

Alloy 400 offers numerous performance benefits, including good strength and toughness, excellent corrosion resistance at low and high temperatures and immunity from chloride-induced stress corrosion cracking.

Stock Availability

We stock Alloy 400 bars in the cold drawn and hot worked conditions, available in various incremental sizes to suit your engineering requirements.

Design Features

  • Outstanding resistance to neutral and alkaline salt.
  • One of few metallic materials which can be used in contact with fluorine, hydrofluoric acid, hydrogen fluoride and their derivatives.
  • High resistance to caustic alkalis.
  • Can be used in contact with dilute solutions of mineral acids such as sulfuric and hydrochloric, particularly if they are non-aerated.
  • Resistance to chloride induced stress corrosion cracking.
  • Good mechanical properties from sub-zero temperatures up to 1020°F
 

Typical Applications

  • Feed-water and steam generator tubing in power plants
  • Brine heaters and evaporator bodies in salt plant
  • Sulfuric and hydrofluoric acid alkylation plant
  • Industrial heat exchangers
  • Cladding for crude oil distillation columns
  • Splash-zone sheathing in offshore structures
  • Propeller and pump shafts for seawater service
  • Plant for uranium refining and isotope separation in the production of nuclear fuel
  • Pumps and valves used in the manufacture of chlorinated hydrocarbons
  • Monoethanolamine (MEA) reboiler tubes

Chemical Composition

C CU MN NI S SI FE
MAX MAX MIN MAX MAX MAX
0.3 28.0 - 34.0 2.0 63.0 0.024 0.50 2.5

【H】 Ceramic lined pipe

Ceramic lined pipe is made through self-propagating high-temperature synthesis (SHS) technique.

【H】 Cast basalt lined steel pipe

Cast basalt lined steel pipe is composed by lined with cast basalt pipe, outside steel pipe and cement mortar filling between the two layers.

【H】 Ceramic Tile Lined Pipes

Ceramic tile lined pipes have very uniform coating of specially formulated ceramic material that is affixed to the inner of the pipe.

【H】 Rare earth alloy wear-resistant pipe

The material of the rare earth alloy wear-resistant pipe is ZG40CrMnMoNiSiRe, which is also the grade of rare earth alloy steel.

【H】 Tubes Erosion Shields

Tubes Erosion Shields are used to protect boiler tubing from the highly erosive effects of high temperatures and pressures thereby greatly extending tube life.

【H】 ASTM A213 T91 Alloy Tube

The ASTM A213 T91 seamless tubes are primarily used for boiler, superheater, and heat-exchanger.