HS-980HT High Temperature Coating

HS-980HT is a ready to apply polysilazane formulated coating product that is an extremely high temperature protective coating that can sustain operating conditions of 1800 degrees F or more.  It helps control radiated heat from a source and restricts heat migration into adjacent surfaces (i.e., a coated “in & out thin wall metal tube” with internal temps of 1600°F / Exterior radiated temp. 180°F).

This coating covalently bonds to all ferous, non-ferous alloys (i.e., Titanium), composites, semi-rigid and flexible plastic alloys as well as many other substrate type.  It is highly corrosion resistant and applies as a thin film that ambient cures or can be oven cured.

The HS-980HT coating is designed for uses where thermal migration control may be needed to help protect the surrounding environment or nearby components.  It can be used when radiated heat needs to be greatly reduced.

This product is designed to block the passage of thermal radiated heat.  The formula is based on a unique nano-ceramic blend and a VOC exempt solvent.  HS-980HT is excellent for use on hot Industrial and Aerospace applications where reduction of radiated high temperatures are of benefit along with chemical and corrosive protection, as the coating is an extremely corrosion resistant.

It covalently bonds to all ferous, non ferous alloys (such as Titanium), composites, semi-rigid and flexible plastic alloys as well as many other substrate types. Aircraft titanium structural components can be coated to reduce the temperature transferred to the substrate.

HS-980HT, at elevated temperatures, remains resistant to Skydrol hydraulic fluid.  In past testing, the coating, flooded with Skyrol, was unaffected even after 350 hours at 275 degrees F.  This is of significant value as, when Skydrol is allowed to come in contact with heated or hot titanium, it starts to create hydrogen embrittlement, greatly weakening the strength of the structure.  This can protect structural parts from heat and/or Skydrol hydraulic leakage.  This coating has passed the 3500 hr ASTM B117 salt spray test 5 present solution on Alodine 600 panels.

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HS-980HT Properties


Color Opaque (solid tone formulas)
Viscosity 20-23 sec. #2 Zahn
Percent of Solids 65-75% +/- 2%
Odor (liquid) Slight Solvent
Odor (cured) None
V.O.C. Exempt per CFR 51.100/regulation 8
RoHS Compliant
Halogens None
Salt Spray (5% solution) 3500 hrs (ASTM B117) on Alodine 600 panels
Thermal Stability (cured) >871.1 degrees C (1600+ degrees F)
Conical Bond (1/8 inch mandrel) Passed (ASTM D522-93a)
Adhesion 5B (ASTM D3359)
Impact Direct 130 lbs (ASTM D2047)
Specific Gravity 1.04 +/- 2% (ASTM D891-09)
Pencil Hardness 9h (Ambient cure)
Average applied dry film thickness 20 to 25 microns (0.5-1 mil)
Est. Coverage Rate @ 3 microns 2000 sq ft / gal @ 0.6 mil/15
Est. Coverage Rate @ 3 microns 1042 sq ft / gal @ 1.0 mil/25
Cure Time (ambient) 5 days @ 23.8 degrees C (75 degrees F)
Cure Time (foreced air oven) 30 min @ 176.6 degrees C (350 degrees F) PMT
Smoke generated when first heated Little to none