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PPG SigmaCover 435 | Steel & Concrete Protection
PPG SigmaCover 435 | Steel & Concrete Protection

PPG SigmaCover 435

PPG4140
PPG4140

PPG SigmaCover 435, two-component, high-build, micaceous iron oxide-pigmented, polyamide-cured recoatable epoxy coating. Used as a buildcoat or finish in protective coating systems, for steel and concrete structures exposed to atmospheric land or marine conditions, curing at temperatures down to -10°C (14°F).

  • A high relative humidity (maximum 95%) during application and curing does not influence the quality of the coating
  • Good adhesion on most aged, sound alkyd, chlorinated rubber and epoxy coatings, and can be recoated with various two-component and conventional coatings, even after long weathering periods
  • Excellent durability; Tough, with long-term flexibility, and resistant to water and splash of mild chemicals
  • Eggshell finish - Easy application, both by airless spray and brush
  • No induction time - 5 hours pot life - fully cured after 4 days (at 20°C (68°F))
  • See below for more information on surface preparation, application details and curing times
Colour
Size
Finish
£50.02(incl. VAT)
£41.68(ex. VAT)
Quantity
Please choose your colour
Available for Delivery (See Delivery Options Below)

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Description

PPG SigmaCover 435 is a two-component, high-build, micaceous iron oxide-pigmented, polyamide-cured recoatable epoxy coating. The general-purpose epoxy buildcoat or finish is used in protective coating systems, for steel and concrete structures exposed to atmospheric land or marine conditions, curing at temperatures down to -10°C (14°F), and has good adhesion on most aged, sound alkyd, chlorinated rubber and epoxy coatings. SigmaCover 435 can be recoated with various two-component and conventional coatings, even after long weathering periods.



Features & Benefits


  • General-purpose epoxy buildcoat or finish in protective coating systems, for steel and concrete structures exposed to atmospheric land or marine conditions
  • Easy application, both by airless spray and brush
  • Cures even at temperatures down to -10°C (14°F)
  • A high relative humidity (maximum 95%) during application and curing does not influence the quality of the coating
  • Good adhesion on most aged, sound alkyd, chlorinated rubber and epoxy coatings
  • Can be recoated with various two-component and conventional coatings, even after long weathering periods
  • Resistant to water and splash of mild chemicals
  • Excellent durability
  • Tough, with long-term flexibility
  • No induction time
  • 6 hours pot life
  • Touch dry in 3 hours
  • Fully cured after 7 days
  • Can be applied by air spray, brush or roller
  • See below for more information on surface preparation, application details and curing times

 

Reference Colour Size Gloss Level
153150 Dark Grey (Sigma 9558) 4 litres Eggshell
179024 Light Grey (Sigma 9553) 4 litres Eggshell
179025 Light Grey (Sigma 9553) 20 litres Eggshell



Product Data


Two-component, high-build, micaceous iron oxide-pigmented, polyamide-cured recoatable epoxy coating

Data for mixed product at 20°C (68°F)
Number of components Two
Mass density 1.4 kg/l (11.7 lb/US gal)
Volume solids 63 ± 2%
VOC (Supplied) Directive 1999/13/EC, SED: max. 241.0 g/kg
UK PG 6/23(92) Appendix 3: max. 344.0 g/l (approx. 2.9 lb/US gal)
Temperature resistance (Continuous) To 200°C (390°F)
Recommended dry film thickness 75 - 150 µm (3.0 - 6.0 mils) depending on system
Theoretical spreading rate 6.3 m²/l for 100 µm (253 ft²/US gal for 4.0 mils)
Dry to touch 2 hours
Overcoating Interval Minimum: 3 hours
Maximum: Extended
Full cure after 4 days
Shelf life Base: at least 24 months when stored cool and dry
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

  • Steel; blast cleaned to ISO-Sa2½, blasting profile 40 – 70 µm (1.6 – 2.8 mils)
  • Steel with approved zinc silicate shop primer; pre-treated according to SPSS or power tool cleaned to SSPC SP3 (SPSSPt3)
  • Previous coat must be sound, dry and free from any contamination

 

Substrate Temperature & Application Conditions


  • Substrate temperature during application and curing down to -10°C (14°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



Application


Instructions for Use

Mixing ratio by volume: base to hardener 82:18

  • 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
  • Thinner should be added after mixing the components
  • Adding too much thinner results in reduced sag resistance

 

Induction Time


None.

 

Pot life


  • 5 hours at 20°C (68°F)

Refer below for more information

 

Air Spray


Recommended thinner

Volume of thinner

      • 10 - 15%, depending on required thickness and application conditions

Nozzle orifice

      • 2.0 – 3.0 mm (approx. 0.079 – 0.110 in)

Nozzle pressure

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

 

Airless spray


Recommended thinner

  • THINNER 91-92

Volume of thinner

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

Nozzle orifice

  • Approx. 0.48 – 0.58 mm (0.019 – 0.023 in)

Nozzle pressure

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

 

Brush/roller


Recommended thinner

  • THINNER 91-92

Volume of thinner

  • 0 – 5%

 

Cleaning Solvent




Spreading Rate and Film Thickness


DFT Theoretical spreading rate
75 µm (3.0 mils) 8.4 m²/l (337 ft²/US gal)
100 µm (4.0 mils) 6.3 m²/l (253 ft²/US gal)
150 µm (6.0 mils) 4.2 m²/l (168 ft²/US gal)

Note:

  • Maximum DFT when brushing: 75 µm (3.0 mils)



Overcoating interval for DFT up to 150 µm (6.0 mils)


Overcoating with... Interval -5°C (23°F) 5°C (41°F) 10°C (50°F) 20°C (68°F) 30°C (86°F) 40°C (104°F)
PPG VIKOTE 46, SIGMADUR 550, SIGMARINE 40 Minimum 3 days 24 hours 16 hours 8 hours 5 hours 3 hours
Maximum Unlimited Unlimited Unlimited Unlimited Unlimited Unlimited
SIGMACOVER 435 and SIGMACOVER 456 Minimum 36 hours 10 hours 4 hours 3 hours 2 hours 2 hours
Maximum Unlimited Unlimited Unlimited Unlimited Unlimited Unlimited

Notes:

  • Surface should be dry and free from chalking and contamination
  • SIGMACOVER 435 should not be overcoated with coal tar epoxy coatings

 

Curing time for DFT up to 150 µm (6.0 mils)


Substrate temperature Dry to Handle Full Cure
-10°C (14°F) 24 hours - 48 hours 20 days
-5°C (23°F) 24 hours - 30 hours 14 days
0°C (32°F) 18 hours - 24 hours 10 days
5°C (41°F) 18 hours 8 days
10°C (50°F) 12 hours 6 days
15°C (59°F) 8 hours 5 days
20°C (68°F) 6 hours 4 days
30°C (86°F) 4 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 1433 and (1434)
  • In exceptional cases SIGMACOVER 435 may be applied at lower substrate temperatures (down to -15°C (5°F)) provided that the surface is free from ice and other contamination. In such cases special care must be taken to avoid thick film application as this may lead to checking/crazing or solvent entrapment. It should be clear that application at lower temperatures will require additional thinning to obtain application viscosity, however this will affect the sag resistance of the applied coating and can induce solvent retention. Optimal curing and designed product properties will only be achieved when minimum required substrate temperature is reached

 

Pot Life (at application viscosity)


Mixed product temperature Pot life
10°C (50°F) 12 hours
20°C (68°F) 5 hours
30°C (86°F) 4 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 vapor, as well as contact between the wet paint and exposed skin or eyes



References


Product Details
4140-896619

Data sheet

Manufacturer
PPG
For Use By
Professional Use
Interior / Exterior Use
Exterior Use
Water / Solvent Based
Solvent
For Use On
Steel, concrete
Application Method
Brush, roller, spray
Sheen
Eggshell
Colour
Standard / Ready Mixed
Single, Two or Three Pack
Two-Pack
Pack Size
4L
Solvent
Epoxy
Mixing Ratio
82:18
Key Features
Cures even at temperatures down to -10°C (14°F)
Touch Dry (at 20°C)
-
Dry to Handle (at 20°C)
6 hours
Dry to Recoat (at 20°C)
3 hours (see tables)
Fully Cured (at 20°C)
4 days
Pot Life (at 20°C)
5 hours
Coverage
6.3 m²/l for 100 µm
Recommended Thinner/Cleaner
THINNER 91-92/THINNER 90-53
Unit Contents
Base & hardener
Compatible Primers
-
Compatible Topcoats
-
Max. Application Temperature
-
Min. Application Temperature
-10°C (14°F)
Density
1.4 kg/l (11.7 lb/US gal)
Solids by Volume
63 ± 2%
Heat Resistance (up-to)
200°C (390°F)
VOC
Directive 1999/13/EC, SED: max. 241.0 g/kg UK PG 6/23(92) Appendix 3: max. 344.0 g/l (approx. 2.9 lb/US gal)
Shelf Life (from date of manufacture)
24 months
UN Number
UN1263
Colour(s)
Standard Colours
Base Type
Solvent-Based
Suitable For Use On
Zinc Silicate Shopprimer
Finish
Eggshell
Application Method
Brush
Application Method
Roller
Application Method
Spray
Usages
MIO
Product Usage Type
Topcoat
Product Range
SigmaCover
Colour Family
Red
Colour Family
Grey
Dry to Recoat (@ 20-25°C)
3 hours
Attachments
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.

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IMPORTANT SHIPPING & DELIVERY INFORMATION

PPG SigmaCover 435 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


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