ARK 280 is a high chromium (greater than 41% by weight) anti-high temperature oxidation, corrosion, and wear resistant coating. The thermal shock performance of the coating is good at 700°C and 900°C. The high temperature oxidation rate after oxidation at 800°C for 240 hours is 0.034 times that of the low carbon steel substrate, and the coating has good anti-oxidation properties.

Main features

  • High chromium content
  • Oxidation resistant at high temperatures
  • Good erosion wear resistance
  • Good thermal shock resistance
  • The oxide content in the coating is low

Typical applications

  • Boiler tubes for pulverized coal-fired boilers and waste incinerators against high temperature oxidation, hot corrosion and erosion wear
  • Steel converters, hoods and flue ducts

Chemical composition of deposited metal (%)


Mechanical properties

Bond Strength (MPa)
Acc. to ASTM C633-01
Micro-hardness (HV 0.1) Kg/mm²
50-52 (Low carbon steel substrate)560–730

Coating properties

Density (g/cm³)% Prosity% Deposition efficiency

Recommended spraying parameters

Diameter: in (mm)Air pressure (MPa)Current (A)Voltage (V)
116 (1.6)0.5–0.6180–22028–32

Diameters and packaging

Diameter: in (mm)Packaging: lb (kg)
116 (1.6)27.5 (12.5) (Vacuum pack spool)

Metallographic photos

ARK 80 microstructure
Left: Spray coating cross-section microstructure (SEM image). Right: Spray coating surface morphology after 240 hours of oxidation

Other images

ARK 80 high temperature oxidation resistance
Spray coating oxygen kinetics at 800°C
XRD Results
ARK 280 XRD results
Click here to download the datasheet for Kooben ARK 280.