SIGMATHERM 540
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June 2012 Revision of April 2010 one component heat resistant moisture curing silicone aluminium PRINCIPAL CHARACTERISTICS – – – – – – – heat resistant up to 540°C on steel, grit blasted to ISO-Sa2½ heat resistant up to 400°C on rusted steel, power tool cleaned to ISO-St3 to be used for the internal and external protection of steel surfaces no heat cure necessary between coats excellent resistance against weathering also suitable on top of zinc silicate primer a minimum drying time of 3 days at 20°C should be allowed before exposure to heat aluminium – eggshell BASIC DATA AT 20 °C Mass density Volume solids VOC (Directive 1999/13/EC, SED) VOC (UK PG 6/23(92) appendix 3) Recommended dry lm thickness Theoretical spreading rate Touch dry after (1 g/cm³ = 8.35 lb/US gal; 1 m²/l = 40.7 ft²/US gal) 1.1 g/cm³ 45% ± 2% max. 427 g/kg (Directive 1999/13/EC, SED) max. 478 g/l (approx. 4.0 lb/gal) 25 μm 18 m²/l for 25 μm 45 min. at 20 °C Overcoating interval Shelf life (cool and dry place) min. 16 hours at least 6 months RECOMMENDED SUBSTRATE CONDITIONS AND TEMPERATURES – steel; blast cleaned to ISO-Sa2½, blasting prole 40 - 70 μm – steel; pretreated according to ISO-St3 – suitable zinc silicate primer (e.g. SigmaZinc 158); dry and free from any contamination and zinc salts – substrate temperature should be at least 3°C above dew point – power agitate to uniform consistency AIR SPRAY Recommended thinner Nozzle orice Nozzle pressure no thinner should be added 1.5 - 2 mm 0.3 - 0.4 MPa (= approx. 3 - 4 bar; 44 - 58 p.s.i.) For Roller application the best results will be obtained by using ne foam type rollers CLEANING SOLVENT

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Worldwide availability Whilst it is always the aim of Sigma Coatings to supply the same product on a worldwide basis, slight modication of the product is sometimes necessary to comply with local or national rules/circumstances. Under these circumstances an alternative product data sheet is used. Conversion tabels Explanation to product data sheets Safety indications Safety in conned spaces and health safety Explosion hazard - toxic hazard Cleaning of steel and removal of rust Specication for mineral abrasives Relative humidity - substrate temperature air temperature SAFETY PRECAUTIONS see...

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WARRANTY PPG warrants (i) its title to the product, (ii) that the quality of the product conforms to PPG’s specications for such product in effect at the time of manufacture and (iii) that the product shall be delivered free of the rightful claim of any third person for infringement of any U.S. patent covering the product. THESE ARE THE ONLY WARRANTIES THAT PPG MAKES AND ALL OTHER EXPRESS OR IMPLIED WARRANTIES, UNDER STATUTE OR ARISING OTHERWISE IN LAW, FROM A COURSE OF DEALING OR USAGE OF TRADE, INCLUDING WITHOUT LIMITATION, ANY OTHER WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE OR USE,...

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