SHS 9172 HVOF Powder - NanoSteel 1-877-293-6266

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SHS 9172 HVOF

Application Process

High Velocity Oxygen Fuel (HVOF) thermal spraying

Material Chemistry (wt%)

Chromium	< 25%
Tungsten	< 15%
Niobium	< 12%
Molybdenum	< 6%
Boron	< 5%
Carbon	< 4%
Manganese	< 3%
Silicon	< 2%
Iron	Balance

Microhardness (HV300)

1000 - 1100 kg/mm²

Wear Resistance

ASTM G65-04 Procedure B

2,000 cycles mass loss

0.07 g

Coating Properties

Density (g/cm³)	7.59
Porosity/Oxides	< 5%

Impact Resistance (Toughness)

Drop Impact Testing

No cracking/delamination at 480 in-lbs

Available Powder Cut

SHS9172HV1
atomized powder (+15 / -53 micron)

Packaging

10 lb and 25 lb containers

Coating Description
SHS 9172 HVOF is an iron based steel alloy with a nanoscale microstructure that features exceptional resistance to erosion, abrasion, impact, corrosion and high temperature oxidation. SHS 9172 HVOF is also a coating alternative to electrolytic hard chromium.

Key Performance Characteristics


		Excels in high sulfur and elevated temperature environments where fly-ash and bed-ash erosion occurs

		Exceptional abrasion resistance for a metallic material

		Significant corrosion and high temperature oxidation resistance

		Very high bond strength across a range of substrate materials, including aluminum, copper, carbon steel and stainless steel

		Can be finished to very high surface specifications as a replacement for hard chrome

		Hardness and corrosion and wear resistance is superior to hard chrome

SHS 9172 HVOF coatings feature exceptional resistance to abrasion and a significant ability to withstand corrosion and high temperature oxidation. SHS 9172 is especially resistant to elevated temperature sulfidation attack and is widely used for elevated temperature erosion and corrosion protection of heat exchange tubes in coal fired boilers. As a replacement for hard chrome, SHS 9172 provides improved resistance to mechanical damage and can be polished to a very high surface finish. While conventional corrosion resistant materials are relatively soft, SHS 9172 in the as-sprayed condition provides hardness and wear resistance equivalent to hard chrome. SHS 9172 has excellent damage tolerance applicable to harsh service environments in a wide range of industrial applications. Additionally, the extremely fine microstructure of SHS 9172 improves toughness, ductility and fatigue resistance.

Resistance to Abrasion and Erosion
SHS 9172 is a glass-forming steel alloy formulated with high concentrations of transition metals which readily dissolve in the glass structure. When applied using benchmark thermal spray parameters, an amorphous matrix is formed which contains hard complex nanoscale borocarbide precipitates. When compared to existing competitive coatings, the microstructures formed in the as-sprayed or fully devitrified (heat treated after spraying) state provide superior resistance to abrasive wear and fine particle erosion.

Damage Tolerance
SHS 9172 HVOF coatings feature superior toughness and resiliency. Impact testing was done using a Gardner drop Impact testing machine at different impact energies up to 480 in-lbs. In the photo, as-sprayed SHS 9172 coating samples withstood impacts of up to 480 in-lbs without cracking, chipping or delaminating, while demonstrating the ability to deform with the substrate. Additionally, the specific high-transition metal chemistry (chromium, molybdenum, tungsten and niobium) of SHS 9172 provides excellent corrosion resistance. The ability to withstand high impact and resist extreme abrasion and corrosion makes SHS 9172 an excellent hard chrome alternative.

Spray Parameters
For SHS 9172 HVOF spray parameters, contact NanoSteel at 1-877-293-NANO or info@nanosteelco.com.

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