Super Stainless Steel


HVOF and HVAF Stainless Steel Coatings

Endurance provides thermal spray HVAF and HVOF coatings with the following features

  • High hardness serves as a barrier against corrosive solutions such as seawater, mineral or organic acids.
  • Protection of base metal achieved through Low porosity and high bond strength preventing corrosion due to penetration of liquids
  • Materials like Stainless steel 316 and stainless steel 316 L offer high resistance to pitting and crevice corrosion
  • Austenitic structure gives good toughness at cryogenic temperature.
  • Resistance against corrosion at elevated temperatures
  • High hardness 3.50˚shows better corrosion resistance than 316 types of alloys in H2S, H2SO4 and seawater conditions.
  • Fe-Cr-Ni and Fe-Cr-Al, HVAF sprayed coatings are successful applications where resistance against corrosion is exhibited at elevated temperatures
  • Non-permeable to gas (Gas-tight)
  • Suitable for resistance to abrasive wear, corrosion and erosion.
  • An alternative to flash chrome coatings.
  • A lower-cost alternative to 86-10-4 tungsten carbide coatings.

Explore thermal spray HVOF and HVAF stainless steel coatings at our shop in Mumbai, Maharashtra.

Advantages of HVAF Super Stainless Coatings

  • A super-stainless HVAF hard-facing coating has been developed to withstand corrosion induced by salt and hydrogen sulphide, abrasion and environmental conditions that the housings of down hole pumps and motors of oil artificial lift equipment are exposed to during their operation.
  • Super stainless steel coatings have successfully replaced the Monel+epoxy coating on Electrical submersible pump housings.

Super Stainless steel Coating Characteristics

 Our HVAF coating compare to other thermal spraying coating    
HVAF Plasma/Twin-Wire/Flame spray HVOF/D-Gun
It exhibits the highest bond strength and lowest porosity Lower particles speed, low bond strength, high porosity level Good result, high process temperature and high oxid content
Gas-Tight coating The oxidized and porous coating Decarburization occurs for low melting elements
100(Microns)0.004 500(Microns) 150 (Microns)

Micrograph of Super Stainless HVAF Thermal Spray Coating

Typical Applications of Super Stainless Coatings

  • Diesel engine valve seats
  • Wear rings
  • Plungers
  • Water valves of FBC boiler
  • Restoration of industrial parts

The Composition of Stainless Steel Powders

Element Standard Wt.% Measured Wt.%
C 0.03 0.024
Cr 16-17.2 16.57
Mn 0.5 0.07
P 0.4 0.029
SI 0.5 0.36
S 0.03 0.002
NI 10-11 10.53
Cu 0.1 0.02
Mo 2-2.4 2.1
N 0 0.025

Properties of HVAF Stainless Steel Coatings

Apparent metallographic porosity,% 1%
Bond strength to Carbon 1200Psi
Hardness, HRC 53-55HRC
Typical as-sprayed roughness Ra: 150-micron inches
Maximum coating thickness, Inch 0.080
Maximum working temperature, F 1200F
SS 304 Coating on Textile Components
Stainless steel Coating on Piston Rod
Stainless steel Coating on Journals.