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PPG SigmaCover 280
PPG SigmaCover 280

PPG SigmaCover 280

7417
PPG3993

Universal epoxy anticorrosive primer suitable for ballast tanks, decks, topside, superstructure, hull and cargo oil tanks.

  • Used in protective coating systems for steel and non-ferrous metals, curing at temperatures down to 5°C, and can be overcoated with most alkyd, chlorinated rubber, vinyl, epoxy and two-component polyurethane coatings.
  • Good adhesion to steel, galvanized steel, non-ferrous metals, with excellent recoatability.
  • Good flow and wetting properties, water and corrosion resistance.
  • Suitable on wet blast cleaned substrates (damp or dry), and for touching up of weld seams and damages of epoxy coatings during construction.
  • Compatible with well-designed cathodic protection systems.
Colour
Size
Finish
£43.49(incl. VAT)
£36.24(ex. VAT)
Quantity
Please choose your colour
Available for Delivery (See Delivery Options Below)

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Description

SigmaCover 280 is a universal epoxy anticorrosive primer, based upon pure epoxy technology, suitable for ballast tanks, decks, topside, superstructure, hull and cargo oil tanks. The primer is used in protective coating systems for steel and non-ferrous metals, curing at temperatures down to 5°C (41°F), and can be overcoated with most alkyd, chlorinated rubber, vinyl, epoxy and two-component polyurethane coatings.

Features & Benefits


  • Used on the Second Wuhu Yangtze Bridge, Anhui Province, China
  • Universal epoxy primer system suitable for Ballast Tanks, Decks, Topside, Superstructure, Hull and Cargo Oil Tanks
  • General-purpose epoxy primer in protective coating systems for steel and non-ferrous metals
  • Good adhesion to steel, galvanized steel, non-ferrous metals
  • Good flow and wetting properties, water and corrosion resistance
  • Cures at temperatures down to 5°C (41°F)
  • Suitable for touching up of weld seams and damages of epoxy coatings during construction
  • Excellent recoatability
  • Can be overcoated with most alkyd, chlorinated rubber, vinyl, epoxy and two-component polyurethane coatings
  • Suitable on wet blast cleaned substrates (damp or dry)
  • Compatible with well-designed cathodic protection systems
  • No induction time
  • 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
184149 Grey 4 litres Eggshell
185279 Grey 20 litres Eggshell
179084 RedBrown 4 litres Eggshell
179085 RedBrown 20 litres Eggshell
179081 Yellow/Green 4 litres Eggshell
179083 Yellow/Green 20 litres Eggshell

Product Data


Universal epoxy anticorrosive primer based upon pure epoxy technology.

Data for mixed product at 20°C (68°F)
Number of components Two
Mass density 1.3 kg/l (11.0 lb/US gal)
Volume solids 57 ± 2%
VOC (Supplied) Directive 1999/13/EC, SED: max. 327.0 g/kg
UK PG 6/23(92) Appendix 3: max. 432.0 g/l (approx. 3.6 lb/US gal)
Recommended dry film thickness 50 - 100 µm (2.0 - 4.0 mils) depending on system
Theoretical spreading rate 11.4 m²/l for 50 µm (457 ft²/US gal for 2.0 mils)
5.7 m²/l for 100 µm (229 ft²/US gal for 4.0 mils)
Dry to touch 1.5 hours
Overcoating Interval Refer to tables below
Full cure after 7 days
Shelf life Base: at least 24 months when stored cool and dry
Hardener: at least 24 months when stored cool and dry

Notes:

  • Refer below for more details on spreading rate and film thickness, overcoating intervals and curing times

Surface Preparation


Recommended Substrate Conditions and Temperatures

Immersion exposure:

  • Steel or steel with not approved zinc silicate shop primer
    • Blast cleaned (dry or wet) to ISO-Sa2½, blasting profile 30 - 75 µm (1.2 – 3.0 mils)

  • Steel with approved zinc silicate shop primer
    • Weld seams and areas of damaged shop primer or breakdown should be blast cleaned to ISO-Sa2½, blasting profile 30 - 75 µm (1.2 – 3.0 mils) or power tool cleaned to SPSS-Pt3

  • Coated steel
    • Hydrojetted to VIS WJ2L (blasting profile 30 – 75 µm (1.2 – 3.0 mils))

 

IMO-MSC.215(82) requirements for water ballast tanks:

  • Steel
    • ISO 8501-3: 2006 grade P2, with all edges treated to a rounded radius of minimum 2 mm (0.0789 in) or subject to three pass grinding

  • Steel or steel with not approved zinc silicate shop primer
    • Blast cleaned to ISO -Sa2½, blasting profile 30 – 75 µm (1.2 – 3.0 mils)

  • Steel with approved zinc silicate shop primer
    • Weld seams and areas of shop primer damage or break down should be blast cleaned to Iso-Sa 2½ blasting profile 30 – 75 µm (1.2 – 3.0 mils):
    1. For shop primer with IMO type approval: no additional requirements
    2. For shop primer without IMO type approval: blast cleaned to ISO-Sa2 removing at least 70% of intact shop primer, blasting profile 30 – 75 µm (1.2 – 3.0 mils)
    • Dust quantity rating "1 for dust size class "3", "4" or "5", lower dust size classes to be removed if visible on the surface to be coated without magnification (ISO 8502-3:1992)

 

Atmospheric exposure conditions:

  • Steel blast cleaned to ISO-Sa2½, blasting profile 30 - 75 µm (1.2 – 3.0 mils) or according to ISO-St3
  • Shop primed steel; pre-treated to SPSS-Pt3
  • Galvanized steel must be sweep blasted or otherwise roughened
  • Galvanized steel must be free from grease, salts and any contamination

 

Concrete / Masonry:

  • Remove grease, oil and other penetrating contaminants according to ASTM D4258
  • Abrade the surface per ASTM D4259 to remove all chalk and surface glaze or laitance. Achieve surface profile - ICRI CSP 3 to 5
  • AMERCOAT 114 A may be used as a pit filler for certain applications. Check with PPG Technical Service for guidance on chemical resistance
  • Maximum recommended moisture transmission rate is 3 lbs / 1,000 ft² / 24 hours by moisture transmission test (ASTM F1869, calcium chloride test or by ASTM D4263, plastic sheet test)
  • Alternatively, ASTM D4944 (Calcium Carbide Gas method) can be used, moisture content should not exceed 4%

 

Substrate Temperature & Application Conditions


  • Substrate temperature during application and curing should be above 5°C (41°F)
  • 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%

Application


Instructions for Use

Mixing ratio by volume: base to hardener 80:20 (4:1)

  • The temperature of the mixed base and hardener should preferably be above 15°C (59°F), otherwise extra thinner may be required to obtain application viscosity
  • Adding too much thinner results in reduced sag resistance and slower cure
  • Thinner should be added after mixing the components

 

Induction Time


None.

 

Pot life

  • 8 hours at 20°C (68°F)

Refer below for more information

 

Air Spray


Recommended thinner

Volume of thinner

  • 0 - 10%, depending on required thickness and application conditions

Nozzle orifice

  • 1.5 – 2.0 mm (approx. 0.060 – 0.079 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

  • 0 - 10%, 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

  • No extra thinner is necessary

Volume of thinner

  • Up to 5% THINNER 91-92 can be added if desired

 

Cleaning Solvent




Spreading Rate and Film Thickness


DFT Theoretical spreading rate
50 µm (2.0 mils) 11.4 m²/l (457 ft²/US gal)
75 µm (3.0 mils) 7.6 m²/l (305 ft²/US gal)
100 µm (4.0 mils) 5.7 m²/l (229 ft²/US gal)

Note:

  • Maximum DFT when brushing: 50 µm (2.0 mils)

Overcoating interval for DFT up to 100 µm (4.0 mils)


Overcoating with... Interval 5°C (41°F) 10°C (50°F) 20°C (68°F) 30°C (86°F) 40°C (104°F)
Other types of paint like most chlorinated rubber, vinyl, and alkyd coatings Minimum 16 hours 10 hours 5 hours 3 hours 2 hours
Maximum 21 days 21 days 10 days 7 days 4 days

  • Surface should be dry and free from any contamination
  • Glossy finishes require a corresponding undercoat

 

Overcoating with... Interval 5°C (41°F) 10°C (50°F) 20°C (68°F) 30°C (86°F) 40°C (104°F)
Various two-pack epoxy and polyurethane coatings Minimum 36 hours 16 hours 8 hours 6 hours 4 hours
Maximum exposed to direct sunshine 3 months 3 months 3 months 2 months 2 months
Maximum NOT exposed to direct sunshine 6 months 6 months 6 months 4 months 3 months

Note:

  • Surface should be dry and free from any contamination

 

Curing time for DFT up to 200 µm (8.0 mils)


Substrate temperature Dry to touch Dry to Handle Full Cure
5°C (41°F) 8 hours 13 hours 21 days
10°C (50°F) 4 hours 6 hours 14 days
20°C (68°F) 2 hours 2.5 hours 7 days
30°C (86°F) 1 hour 1.5 hours 5 days
40°C (104°F) 45 minutes 1 hour 3 days

Notes:

  • Adequate ventilation must be maintained during application and curing (please refer to information sheets 1433 and 1434)

 

Pot Life (at application viscosity)


Mixed product temperature Pot life
15°C (59°F) 10 hours
20°C (68°F) 8 hours
30°C (86°F) 5 hours
35°C (95°F) 4 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

References


Product Details
3993-527765

Data sheet

Manufacturer
PPG
Water / Solvent Based
Solvent
For Use On
Steel, Non-Ferrous Metal, Concrete, Masonry
Sheen
Eggshell
Colour
Standard / Ready Mixed
Single, Two or Three Pack
Two-Pack
Pack Size
4L, 20L
Parts
Two
Base Type
Solvent-borne
Solvent
Epoxy
Mixing Ratio
4:1
Suitable Substrates
Steel, Galvanized, Concrete / Masonry
Key Features
Anticorrosive, curing at temperatures down to 5°C, can be overcoated with most alkyd, chlorinated rubber, vinyl, epoxy and two-component polyurethane coatings.
Application
Brush, Roller, Spray
Touch Dry (at 20°C)
2 hours
Dry to Handle (at 20°C)
-
Dry to Recoat (at 20°C)
See tables
Fully Cured (at 20°C)
7 days
Pot Life (at 20°C)
8 hours
Coverage
11.4 m²/l for 50 µm/5.7 m²/l for 100 µm
Recommended Thinner/Cleaner
91-92
Unit Contents
Base & hardener
Compatible Primers
-
Compatible Topcoats
Most alkyd, chlorinated rubber, vinyl, epoxy and two-component polyurethane coatings.
Max. Application Temperature
-
Min. Application Temperature
15°C (59°F)
Density
1.3 kg/l (11.0 lb/US gal)
Solids by Volume
57 ± 2%
Heat Resistance (up-to)
-
VOC
Directive 1999/13/EC, SED: max. 327.0 g/kg UK PG 6/23(92) Appendix 3: max. 432.0 g/l (approx. 3.6 lb/US gal)
Shelf Life (from date of manufacture)
24 months (Base & Hardener)
UN Number (Activator)
UN1263
UN Number (Base)
UN1263
Base Type
Solvent-Borne
Suitable For Use On
Masonry
Suitable For Use On
Concrete
Suitable For Use On
Steel
Suitable For Use On
Non-Ferrous Metal
Finish
Eggshell
Application Method
Brush
Application Method
Roller
Application Method
Spray
Product Usage Type
Primer
Product Range
SigmaCover
Colour Family
Grey
Colour Family
Green
Colour Family
Red
Colour Family
Yellow
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 280 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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