Nickel Alloy 28 Capillary Tubes Wst. 1.4563 UNS N08028:-

Specification:  ASTM B668
EN 10216-5
Maximum expose temperature: 600°C / 1110°F

Alloy 28 is a nickel-iron-chromium alloy with additions of molybdenum and copper. It has a high resistance to pitting, cursive corrosion and to stress-corrosion. Developed as a material for service is highly aggressive and corrosive environments. The alloy are especially resistant to sulfuric and phosphoric acid. The alloy 28 has a similar specification as alloy 825 tube.

Characteristics

  •  Excellent abrasion and corrosion resistance
  •  Very good resistance to oxidizing media and strong acids
  •  Good resistance to sulphide cracking
  •  High resistance to inter granular, pitting and crevice corrosion
  •  Good weld ability and formability

Market applications:

  •    Chemical processing
  •    Oil and gas industry
  •    Pollution control equipment  
  •    Acid production
  •    Hydraulic systems

Technical details

Technical composition (%) Fe Cr Ni Mo Mn Cu Si P N C S
28 min Bal. 21.0 4.5 2.5 - - - - 0.08 - -
max - 23.0 6.5 3.5 2.00 1.0 1.00 0.030 0.20 0.030 0.020


Mechanical Properties 28
Tensile strenght (mpa, min) 550 - 750
Yield strength (0.2% offset mpa, min) 220 - 250
Elongation (%, min) 40
Density / weight (g / cm3 / kg) 7.9

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