SIGMAWELD 190

SIGMAWELD 190

SIGMAWELD 190

Product catalog summary
Product Overview: SIGMAWELD 190 is a two-component moisture curing, low zinc (ethyl) silicate prefabrication primer. It is suitable for automatic application on shot blasted steel plates and offers fast drying properties, good cutting, and excellent welding properties, including MIG/MAG welding in various positions. It provides smooth weld seams, low fume release, and excellent thermal stability, making it suitable for sea water immersion with controlled cathodic protection systems. Approved by Lloyd's Register of Shipping.
Specifications: The primer is available in redbrown (grey on request) with a flat finish. It has a mass density of 1.2 g/cm³ and volume solids of 25% ± 2%. The VOC content is a maximum of 552 g/kg. The recommended dry film thickness is 18 μm, with a theoretical spreading rate of 11.4 m²/l for this thickness. Touch dry time is 6 minutes at 20°C and 3 minutes at 40°C. Overcoating intervals range from a minimum of 3 days to a maximum of 6 months.
Substrate Conditions and Temperatures: Steel should be shot blast cleaned to ISO-Sa2½ with a blasting profile of 30 - 75 μm. The substrate temperature should not exceed 35°C and should be at least 3°C above the dew point. Relative humidity during curing should be between 50% and 85%.
Mixing and Application: The mixing ratio by volume is 66.7:33.3 (binder to paste). The mixture should be stirred thoroughly and strained through a 30 - 60 mesh screen. The paint is ready for use after mixing, with a pot life of 24 hours at 20°C. Air spray and airless spray application methods are detailed, with specific nozzle orifice and pressure recommendations.
Safety Precautions: The product is solvent-borne, and precautions should be taken to avoid inhalation of spray mist or vapors and contact with skin or eyes. Safety sheets provide further guidance.
Warranty and Liability: PPG provides a warranty on the product's title and conformity to specifications. Claims must be made within five days of defect discovery. PPG disclaims liability for indirect, special, incidental, or consequential damages.
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Catalog excerpts

SIGMAWELD 190-1

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) redbrown (grey on request) – at (1 g/cm³ = 8.35 lb/US gal; 1 m²/l = 40.7 ft²/US gal) (data for mixed product) Mass density Volume solids VOC (Supplied) Recommended dry lm thickness Theoretical spreading rate Touch dry after Overcoating interval Shelf life (cool and dry place) 1.2 g/cm³ 25% ± 2% max. 552 g/kg (Directive 1999/13/EC,SED) max. 680 g/l (approx. 5.7 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 (data for components) binder: at least 9 months paste: at least 12 months

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SIGMAWELD 190-2

SIGMAWELD 190 May 2013 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% – dust quantity...

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SIGMAWELD 190-3

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 temperature – agitate continuously during application...

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SIGMAWELD 190-4

SAFETY PRECAUTIONS 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 see information sheet 1410 see information sheet 1411 see information sheet 1430 see information sheet 1431 see information sheet 1490 see information sheet 1491 see information sheet 1650 – for paint and recommended thinners see safety sheets 1430, 1431 and relevant material safety data sheets – this is...

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SIGMAWELD 190-5

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, ARE...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.