体彩20选5开奖时间几点:Alloy 400

Nickel-copper alloy 400 (UNS N04400/ W.Nr. 2.4360 and 2.4361) 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.

 

Specifications

UNS N04400

Werkstoff – Nr. 2.4360/2.4361

ASTM B 127 (plate, sheet, and strip), B 163 (condenser and heat exchanger tube), B 164 (rod, bar, and wire), B 165 (seamless pipe and tube), B 366 (welding fittings), B 564 (forgings), B 725 (welded pipe), B 730 (welded tube), B 751 (welded tube, general requirements), B 775 (welded pipe, general requirements), B 829 (seamless pipe and tube, general requirements)

 

Chemical composition

Grade C% Mn% S% Si% Ni% Cu% Fe%
Alloy 400 Max 0.30 Max 2.0 Max 0.024 Max 0.50 Min 63.0 28.0-34.0 Max 2.5

 

Mechanical properties

Form Condition Yield strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Elongation
A %
Sheet, Plate, Strip Annealed 480 195 35
Bar Annealed 480 170 35

 

Characteristics

  • Resistant to seawater and steam at high temperatures
  • Excellent resistance to rapidly flowing brackish water or seawater
  • Excellent resistance to stress corrosion cracking in most freshwaters
  • Particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated
  • Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations, but is
  • seldom the material of choice for these acids
  • Excellent resistance to neutral and alkaline salt
  • Resistance to chloride induced stress corrosion cracking
  • Good mechanical properties from sub-zero temperatures up to 1020° F
  • High resistance to alkalis

 

Applications

  • Marine engineering
  • Chemical and hydrocarbon processing equipment
  • Gasoline and freshwater tanks
  • Crude petroleum stills
  • De-aerating heaters
  • Boiler feed water heaters and other heat exchangers
  • Valves, pumps, shafts, fittings, and fasteners
  • Industrial heat exchangers
  • Chlorinated solvents
  • Crude oil distillation towers