OS-52-20 CERTA — organosilicate composition for abrasive wear and heat
Organosilicate coating for metal, concrete and reinforced concrete under abrasive wear and heating up to +400 °C; categories C1–C3 per ISO 12944-2.

KO-870 in the CERTA version is designed for two types of substrate: steel and cement-sand surfaces. Under heating, the coating withstands up to +700 °C depending on colour, and for protection against industrial atmospheric corrosion it is used in the range −60…+300 °C. The enamel is manufactured to TU 2312-030-49248846-2015, requires no priming, is resistant to mineral oil, petroleum products and salts, and is applied at temperatures from −30 °C to +40 °C.
| Manufacturer | CERTA — OOO “NPP “Spektr”, Novocheboksarsk |
|---|---|
| Type | heat-resistant coatings |
| Base | one-component silicone enamel (primer-enamel); organic solvents |
| Colour | white, silver-grey, grey, black, bright red, green |
| Packaging | 25 kg |
| Application method | air spray (working viscosity 20–25 s), airless spray (35–50 s), brush or roller (30–50 s); stripe coat on welds and edges; preparation Sa 2½ per ISO 8501-1 (St 3 permitted); solvent CERTACOR R, toluene, o-xylene (not more than 10 %; white spirit, solvent naphtha and petrol are not permitted) |
| Application temperature | from −30 °C to +40 °C; relative humidity not more than 80 %; surface 3 °C above the dew point; no precipitation, wind not more than 10 m/s |
| Drying | intercoat drying 90 min at −30 °C, 60 min at 0 °C, 30 min at +20 °C; full properties in 72 h at +20 °C; for service above 100 °C — hot curing at commissioning: 1 h in air, heating (4±0.5) °C/min, at least 3 h at service temperature; for mineral oil and petrol media without heating — 30 min at 250–400 °C; installation — not earlier than 72 h |
| Key properties | Service temperature: from −60 °C to +700 °C depending on colour, Resistance to mineral oil, petroleum products, salts, No priming required |
| Compatible materials | applied without primer; any primer used must not impair the properties of the system |
| Shelf life | 12 months from the date of manufacture; storage from −30 °C to +40 °C |
| Standards | TU 2312-030-49248846-2015 |
Data from the manufacturer’s technical data sheet. The coating system, number of coats and quantity are selected for your project on request.
Organosilicate coating for metal, concrete and reinforced concrete under abrasive wear and heating up to +400 °C; categories C1–C3 per ISO 12944-2.
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Heat-resistant enamel for boiler casings, chimneys, flue ducts and heated steel structures, on metal and concrete, up to +400 °C.
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Polyorganosiloxane coating for metal, concrete and reinforced concrete structures in aggressive gas-air media, C1–C4 per ISO 12944-2.
Silicone primer-enamel for power line towers, lighting masts, trestles, trusses, facades, foundations and tunnels, from −60 °C to +150 °C.