Good morning, I am looking for advice on the best primer to use for a Sigmadur 520 top coat, Any advice you can pass on would be appreciated Regards Kevin

This product can be applied over previous applications of clean, dry, sound and prepared epoxy or polyurethane compatible coatings. Please can you provide information on the project to technical@rawlinspaints.com so we can recommend a suitable product.

PPG SigmaDur 520

Reference 7524

Brand PPG

Search ID PPG4152

PPG SigmaDur 520, a two-component, high-build semi-gloss aliphatic acrylic polyurethane finish that can be recoated an unlimited amount, with excellent resistance to atmospheric exposure conditions.

Available in 2,300+ colours, inc. RAL, BS, NCS & the new NCS 2050 colours
Easy application by roller and airless spray - Can be recoated even after long atmospheric exposure
Good colour and gloss retention (aluminum version becomes grey) - Non-chalking, non-yellowing
Cures at temperatures down to -5°C (23°F) - Tough and abrasion resistant
Resistant to splash of mineral and vegetable oils, paraffins, aliphatic petroleum products and mild chemicals

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Colour Group

Size

Finish

£90.60(incl. VAT)

£75.50(ex. VAT)

Quantity

Please choose your colour

Available for Delivery (See Delivery Options Below)

ColourPicker Explained

In general we sort colours for products into 2 main groups - ‘Ready Mixed’ and ‘Tinted’.
Tinted colours will always be more expensive than Ready Mixed colours as they need to be produced at the time of order using a tinting machine dispensing colourant into a base*.
During busy periods, this means that tinted colours could take longer, for example – a ready mixed colour ordered on a 3-5 day delivery might arrive within 3 days, however a tinted colour might take the full 5 days to arrive.

To find Ready Mixed colours, search "ready mixed" or select the Ready Mixed 'colour chart'. To see Tinted colours select a colour chart such as RAL, BS, NCS, etc. or search for a colour/hue to see available or related options.

To ensure fair pricing, we split colours into ‘Price Bands’ to group together similar priced colours. If you wish to search for the cheapest tinted colours, always select Price Band 1.

We make every effort to list all available colours, however we also offer a colour match service which can be accessed by contacting our Technical Team on 0113 245 5450 (option 2) or emailing [email protected]

*Colours are sold in the nearest tin size but actual paint volume per tin may vary up to 10% depending on colour

Colour reproduction of the Products on the Site is limited by the technology used to deliver web pages and by the colour representation of Customer’s own monitor and computer set-up. We have made every effort to display as accurately as possible the colours of our Products but we cannot guarantee that the colour shown on Customer’s monitor’s display will accurately reflect the colour of the Product on delivery. We recommend that Customer first purchases the smallest Product available or access an industry standard colour chart in person (and not digitally) to ensure that the colour is acceptable for its purposes.

1 question about the product

Description

PPG SigmaDur 520 is two-component, high-build semi-gloss aliphatic acrylic polyurethane finish with excellent resistance to atmospheric exposure conditions that can be recoated an unlimited amount.

Easy to apply by roller and airless spray, SigmaDur 520 is available in 2,300+ colours, inc. RAL, BS, NCS & the new NCS 2050 colours

. The finish is tough and durable, resistant to splash of mineral and vegetable oils, paraffins, aliphatic petroleum products and mild chemicals, and can be recoated even after long atmospheric exposure.

Features & Benefits

Easy application by roller and airless spray
Unlimited recoats
Available in 2,300+ colours, inc. RAL, BS, NCS & the new NCS 2050 colours
Excellent resistance to atmospheric exposure conditions
Good colour and gloss retention (aluminum version becomes grey)
Non-chalking, non-yellowing
Cures at temperatures down to -5°C (23°F)
Tough and abrasion resistant
Resistant to splash of mineral and vegetable oils, paraffins, aliphatic petroleum products and mild chemicals
Can be recoated even after long atmospheric exposure
Used by Utgrunden Offshore Wind Farm, Baltic Sea, protecting against seawater immersion, strong winds, breaking waves, ice formation
Also used at Tylstrup Onshore Wind Farm to combat outdoor weathering, ice, sun and airborne animal manure

Product Data

Two-component, high-build semi-gloss aliphatic acrylic polyurethane finish

Data for mixed product at 20°C (68°F)
Number of components	Two
Mass density	White: 1.4 kg/l (11.7 lb/US gal)
Mass density	Aluminium: 1.1 kg/l (9.2 lb/US gal)
Volume solids	White: 58 ± 2%
Volume solids	Aluminium: 51 ± 2%
VOC (Supplied)	Directive 1999/13/EC, SED: max. 287 g/kg (white)
	Directive 1999/13/EC, SED: max. 377 g/kg (aluminium)
	max. 383.0 g/l (approx. 3.2 lb/gal) (white)
	max. 405.0 g/l (approx. 3.4 lb/gal) (aluminium)
Recommended dry film thickness	50 - 75 µm (2.0 - 3.0 mils) depending on system
Theoretical spreading rate	White: 11.6 m²/l for 50 µm (465 ft²/US gal for 2.0 mils)
Theoretical spreading rate	Aluminium: 9.6 m²/l for 50 µm (385 ft²/US gal for 2.0 mils)
Dry to touch	1 hour
Overcoating Interval	Minimum: 6 hours
Overcoating Interval	Maximum: Unlimited
Full cure after	4 days
Shelf life	Base: at least 36 months when stored cool and dry
Shelf life	Hardener: at least 24 months when stored cool and dry

Notes:

See below for more information on surface preparation, application details and curing times

Surface Preparation

Recommended Substrate Conditions and Temperatures

Substrate conditions

Previous coat (epoxy or polyurethane) must be dry and free from any contamination
Surface of previous coat should be sufficiently roughened if necessary

Substrate Temperature & Application Conditions

Substrate temperature during application and curing down to -5°C (23°F) is acceptable; provided the substrate is free from ice and dry
Substrate temperature during application and curing should be at least 3°C (5°F) above dew point
Relative humidity during application and curing should not exceed 85%
Premature exposure to early condensation and rain may cause colour and gloss change

Application

Instructions for Use

Mixing ratio by volume: base to hardener 88:12

The temperature of the mixed base and hardener should be above 10°C (50°F), otherwise extra thinner may be required to obtain application viscosity
Adding too much thinner results in reduced sag resistance
Thinner should be added after mixing the components
Aluminium version has lower gloss than the standard version and the colour could be different by application method

Induction Time

None.

Pot life

5 hours at 20°C (68°F)

Refer below for more information

Air spray

Recommended thinner

THINNER 21-06

Volume of thinner

5 - 10%, depending on required thickness and application conditions

Nozzle orifice

1.0 - 1.5 mm (approx. 0.040 - 0.060 in)

Nozzle pressure

0.3 - 0.4 MPa (approx. 3 - 4 bar; 44 - 58 p.s.i.)

Airless spray

Recommended thinner

THINNER 21-06

Volume of thinner

0 - 5%, depending on required thickness and application conditions

Nozzle orifice

Approx. 0.46 mm (0.018 in)

Nozzle pressure

15.0 MPa (approx. 150 bar; 2176 p.s.i.)

Brush/roller

Recommended thinner

THINNER 21-06

Volume of thinner

0 – 5%

Cleaning Solvent

THINNER 90-53

Spreading Rate and Film Thickness

White:

DFT	Theoretical spreading rate
50 µm (2.0 mils)	11.6 m²/l (465 ft²/US gal)
75 µm (3.0 mils)	7.7 m²/l (310 ft²/US gal)

Aluminium:

DFT	Theoretical spreading rate
50 µm (2.0 mils)	9.6 m²/l (385 ft²/US gal)
75 µm (3.0 mils)	6.4 m²/l (257 ft²/US gal)

Overcoating interval for DFT up to 75 µm (3.0 mils)

Overcoating with...	Interval	-5°C (23°F)	0°C (32°F)	10°C (50°F)	20°C (68°F)	30°C (86°F)	40°C (104°F)
Itself	Minimum	24 hours	16 hours	8 hours	6 hours	5 hours	3 hours
Itself	Maximum	Unlimited	Unlimited	Unlimited	Unlimited	Unlimited	Unlimited

Note:

Surface should be dry and free from any contamination

Curing time for DFT up to 75 µm (3.0 mils)

Substrate temperature	Dry to touch	Full cure
-5°C (23°F)	24 hours	15 days
0°C (32°F)	16 hours	11 days
10°C (50°F)	8 hours	6 days
20°C (68°F)	6 hours	4 days
30°C (86°F)	5 hours	3 days
40°C (104°F)	3 hours	48 hours

Notes:

Adequate ventilation must be maintained during application and curing (please refer to INFORMATION SHEETS
Safe Working in Confined Spaces (1433) and Directives for Ventilation Practice (1434)
Premature exposure to early condensation and rain may cause colour and gloss change

Pot Life (at application viscosity)

Mixed product temperature	Pot life
10°C (50°F)	7 hours
20°C (68°F)	5 hours
30°C (86°F)	3 hours
40°C (104°F)	2 hours

Safety Precautions

For paint and recommended thinners, see information sheets information sheet 1430, information sheet 1431 and the relevant Material Safety Data Sheets in the attachments section above
This is a solvent-borne paint and care should be taken to avoid inhalation of spray mist or vapour, as well as contact between the wet paint and exposed skin or eyes
Contains a polyisocyanate curing agent
Avoid at all times inhalation of aerosol spray mist

References

Conversion Tables (information sheet 1410)
Explanation to product data sheets (information sheet 1411)
Safety Indicators (information sheet 1430)
Safety in Confined Space and Health Safety, Explosion Hazard - Toxic Hazard (information sheet 1431)
Safe Working in Confined Spaces (information sheet 1433)
Directives for Ventilation Practice (information sheet 1434)
Relative humidity - Substrate Temperature - Air Temperature (information sheet 1650)

Product Details

Reference 4152-857853

Data sheet

Manufacturer: PPG
For Use By: Professional Use
Water / Solvent Based: Solvent
For Use On: Metal
Application Method: Brush, Roller, Spray
Sheen: Semi Gloss
Colour: Fully Tintable
Single, Two or Three Pack: Two-Pack
Pack Size: 4L, 20L
Parts: 2
Base Type: Solvent-borne
Solvent: Polyurethane
Mixing Ratio: 88:12
Suitable Substrates: Metal
Key Features: Excellent resistance to atmospheric exposure conditions that can be recoated an unlimited amount.
Touch Dry (at 20°C): 60 mins
Dry to Handle (at 20°C): -
Dry to Recoat (at 20°C): 6 hours
Fully Cured (at 20°C): 4 days
Pot Life (at 20°C): 5 hours
Coverage: 50 - 75 µm (2.0 - 3.0 mils) depending on system
Recommended Thinner/Cleaner: THINNER 21-06/THINNER 90-53
Unit Contents: Base & hardener
Compatible Primers: -
Compatible Topcoats: -
Max. Application Temperature: -
Min. Application Temperature: -5°C (23°F)
Density: White: 1.4 kg/l (11.7 lb/US gal); Aluminium: 1.1 kg/l (9.2 lb/US gal)
Solids by Volume: White: 58 ± 2%; Aluminium: 51 ± 2%
Heat Resistance (up-to): -
VOC: Directive 1999/13/EC, SED: max. 287 g/kg (white) Directive 1999/13/EC, SED: max. 377 g/kg (aluminium) max. 383.0 g/l (approx. 3.2 lb/gal) (white) max. 405.0 g/l (approx. 3.4 lb/gal) (aluminium)
Shelf Life (from date of manufacture): Base: at least 36 months; Hardener: at least 24 months
UN Number (Activator): UN1263
UN Number (Base): UN1263
Base Type: Solvent-Based
Suitable For Use On: Metal
Suitable For Use On: Primed Surfaces
Finish: Semi-Gloss
Application Method: Brush
Application Method: Roller
Application Method: Spray
Usages: High Build
Usages: Abrasion Resistant
Usages: Low Temperature
Usages: Atmospheric
Usages: Tough/Durable
Usages: Gloss Retention
Usages: Colour Retention
Product Usage Type: Topcoat
Product Range: SigmaDur
Colour Family: Anthracite Grey
Colour Family: Grey
Colour Family: Green
Colour Family: Blue
Colour Family: Red
Colour Family: Brown
Colour Family: Pink
Colour Family: Orange
Colour Family: Purple
Colour Family: Yellow
Colour Family: Black
Colour Family: White
Colour Family: Neutral
Categorised As: Metal Paints > Low Temperature Topcoats
Seasonal: Cold Weather
Product Type: Synthetic Alkyd
Environment: Atmospheric
Environment: Low Temperature
Touch Dry/Dust Free (@ 20-25°C): 60 mins
Product Attributes: High Build
Product Attributes: Tough / Durable
Resistance to: Abrasion

Attachments

Download

Product Data Sheet

Download

Safety Data Sheet (Hardener)

Download

Safety Data Sheet (Tinted)

Download

Safety Data Sheet (Base Aluminium Light)

Download

Safety Data Sheet (Base Aluminium Dark)

Download

Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.

Questions

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KEVIN NICOL on 2022-10-13 09:51:00	Question: Good morning, I am looking for advice on the best primer to use for a Sigmadur 520 top coat, Any advice you can pass on would be appreciated Regards Kevin
	Answer from Rawlins’ Technical Team: This product can be applied over previous applications of clean, dry, sound and prepared epoxy or polyurethane compatible coatings. Please can you provide information on the project to [email protected] so we can recommend a suitable product.

IMPORTANT SHIPPING & DELIVERY INFORMATION

PPG SigmaDur 520 is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.

Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.

Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.

All delivery costs below are excluding VAT