SIGMAWELD 199
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SIGMAWELD 199 - 1

SIGMAWELD 199 4 pages DESCRIPTION October 2009 Revision of January 2007 two component moisture curing, low zinc (ethyl) silicate prefabrication primer PRINCIPAL CHARACTERISTICS – suitable for automatic application on shot blasted steel plates – fast drying properties – good cutting and excellent welding properties, including MIG/MAG welding in various positions (either automatic or manual welding) – provides regular, smooth weld seams – low fume release during welding and cutting – no adherence of weldspatter at surrounding primed surface – excellent thermal stability minimizes heat damage during hot work procedures – can be used as a rst coat in various paint systems – suitable for sea water immersion in combination with controlled cathodic protection systems – approved by Lloyd's Register of Shipping for use as prefabrication primer (see sheet 1880) – Health certicate from North of England Industrial Health Service (see sheet 1881) COLOURS AND GLOSS redbrown (grey on request) - at BASIC DATA AT 20°C (1 g/cm³ = 8.25 lb/US gal; 1 m²/l = 40.7 ft²/US gal) (data for mixed product) Mass density Volume solids VOC (supplied) 1.3 g/cm³ 25 ± 2% max. 521 g/kg (Directive 1999/13/EC, SED) max. 676 g/l (approx. 5.6 lb/gal) 18 µm - see further: "Recommended substrate conditions and temperatures" 11.4 m²/l for 18 µm 6 min. at substrate temperature of 20°C 3 min. at substrate temperature of 40°C min. 3 days max. 6 months longer overcoating intervals can be permitted when primer is still in sound condition Recommended dry lm thickness Theoretical spreading rate Touch dry after Overcoating interval (data for components) Shelf life (cool and dry place) binder: at least 9 months paste: at least 12 months page 1/4

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SIGMAWELD 199 - 2

SIGMAWELD 199 October 2009 RECOMMENDED SUBSTRATE CONDITIONS AND TEMPERATURES – steel; shot blast cleaned to ISO-Sa2½, blasting prole 30 - 75 µm – on steel blasted to above prole, the recommended dft, 18 µm, corresponds to 22 µm as measured on a smooth test panel – minimum thickness for a closed lm is 15 µm measured on a smooth test panel – substrate temperature may be up to max. 35°C – for automatic application a substrate temperature of 30°C is recommended – substrate temperature should be at least 3°C above dew point – relative humidity during curing should be above 50% and below 85% –...

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SIGMAWELD 199 - 3

SIGMAWELD 199 October 2009 INSTRUCTIONS FOR USE mixing ratio by volume: binder to paste 66.7 : 33.3 – the temperature of the mixture of binder and paste should preferably be above 15°C – stir the paste thoroughly before adding the binder – add gradually one third of the binder to the pigment paste – stir thoroughly till homogeneous – add remaining binder and continue stirring until the mixture is homogeneous – strain mixture through a 30 - 60 mesh screen – mixed paint is ready for use – some addition of thinner (Thinner 90-53) might be necessary depending on routing, line speed and steel...

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SIGMAWELD 199 - 4

SIGMAWELD 199 October 2009 LIMITATION OF LIABILITY The information in this data sheet is based upon laboratory tests we believe to be accurate and is intended for guidance only. All recommendations or suggestions relating to the use of the Sigma Coatings products made by PPG Protective & Marine Coatings, whether in technical documentation, or in response to a specic enquiry, or otherwise, are based on data which to the best of our knowledge are reliable. The products and information are designed for users having the requisite knowledge and industrial skills and it is the end-user's...

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