SHS 7174 TWAS coatings feature good combinations of corrosion and wear resistance, high impact resistance and superior bond strength. SHS 7174 has been proven to be especially resistant to elevated temperature sulfidation attack and is widely used for elevated temperature erosion/corrosion protection of heat exchange tubes in coal fired boilers. Superior bond strength values signify that SHS 7174 has exceptional adhesion and cohesion. High adhesion values highlight the extremely low residual stress (even at high thicknesses) that is an inherent factor in coatings of this type. High cohesion values mean that the probability of “pull-out” of individual particles is extremely low during wear, erosion and other service conditions. Low porosity means low coating permeability, resulting in a highly corrosion resistant barrier. Low oxide content is another key ingredient contributing to the high bond strength due to the very limited presence of internal voids and other defects. These characteristics provide predictable coating performance across a broad variety of service environments.
Universal Applicability
SHS 7174 features improved performance in saline environments. SHS 7174 has excellent spray forgiveness and the ability to maintain coating structure and resulting properties over a very wide processing window. SHS 7174 can be sprayed directly onto the substrate using conventional substrate preparation practices and does not need a bond coat to achieve extremely high bond strength.
Damage Tolerance
SHS 7174 exhibits superior toughness and resiliency. Impact testing was performed using a Gardner Impact testing machine at different impact energies. As-sprayed SHS 7174 coatings withstood impacts of 120, 240, 360 and 480 in-lbs without cracking, chipping or delaminating, while demonstrating the ability to deform with the substrate.
Spray Parameters
For SHS 7174 TWAS spray parameters, contact NanoSteel at 1-877-293-NANO or info@nanosteelco.com.
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SHS Products 
SHS 7174 TWAS 
