PPG SigmaTherm 350

7565

PPG SigmaTherm 350 is a heat-resistant silicone/acrylic finish, featuring excellent resistance against weathering and a minimum drying time of 3 days at 20°C (68°F) should be allowed before exposure to heat.

  • Heat-resistant up to 350°C (660°F)
  • To be used for the internal and external protection of steel surfaces
  • Widely compatible with inorganic zinc primers

Colour
Size
Finish
£658.03
£789.64 Incl. VAT
Quantity
Please choose your colour
Available for Delivery (See Delivery Options Below)

Description

PPG SigmaTherm 350 is a heat-resistant silicone/acrylic finish, featuring excellent resistance against weathering and a minimum drying time of 3 days at 20°C (68°F) should be allowed before exposure to heat.

Features & Benefits


  • Heat-resistant up to 350°C (660°F)
  • To be used for the internal and external protection of steel surfaces
  • Widely compatible with inorganic zinc primers

Product Data


Two-component, high-build, heat-resistant epoxy phenol novolac coating.

Epoxy coatings will chalk and fade upon exposure to sunlight, elevated temperatures, or chemical exposure. Discolouration and normal chalking does not impact performance. Light colours will darken over time. Some batch-to-batch variation in colour is to be expected. Colour matches are approximate.

Data for mixed product at 20°C (68°F)
Number of components One
Mass density Aluminum: 1.1 kg/l (9.2 lb/US gal)
Volume solids Aluminum: 42 ± 2%
VOC (Supplied) Directive 1999/13/EC, SED: max. 491 g/kg (aluminum)
max. 540.0 g/l (approx. 4.5 lb/gal) (aluminum)
Recommended dry film thickness 25 - 30 µm (1.0 - 1.2 mils)
Theoretical spreading rate Aluminum: 16.8 m²/l for 25 µm (674 ft²/US gal for 1.0 mils)
Dry to touch 1 hour
Overcoating Interval Minimum: 18 hours
Maximum: Unlimited
Shelf life At least 24 months when stored cool and dry

Surface Preparation


Recommended Substrate Conditions and Temperatures

Substrate conditions

  • Thermal aluminum sprayed steel or thermal zinc sprayed steel must be dry and free from any contamination
  • Suitable coating (zinc silicate primer) must be dry, free from any contamination and zinc salts
  • Steel; blast cleaned to a minimum of ISO-Sa2½, blasting profile 40 – 70 µm (1.6 – 2.8 mils)

 

Substrate Temperature & Application Conditions


  • Substrate temperature during application and curing should be at least 3°C (5°F) above dew point

Application


Instructions for Use

  • By using a mist coat technique, it is possible to apply SIGMATHERM 350 on top of a zinc silicate primer
  • Power agitate to uniform consistency

 

Air Spray


Recommended thinner

  • No thinner should be added

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

  • No thinner should be added

Nozzle orifice

  • Approx. 0.38 – 0.48 mm (0.015 – 0.019 in)

Nozzle pressure

  • 12.0 - 15.0 MPa (approx. 120 - 150 bar; 1741 - 2176 p.s.i.)

 

Brush/roller


  • Only for touch-up and spot repair

 

Cleaning Solvent


Spreading Rate and Film Thickness


Theoretical Spreading Rate - Aluminium


DFT Theoretical Spreading Rate
25 µm (1.0 mils) 16.8 m²/l (674 ft²/US gal)
30 µm (1.2 mils) 14.0 m²/l (561 ft²/US gal)

Overcoating interval for DFT up to 30 µm (1.2 mils)


Overcoating with... Interval 10°C (50°F) 20°C (68°F) 30°C (86°F) 40°C (104°F)
Itself Minimum 24 hours 18 hours 15 hours 10 hours
Maximum Unlimited Unlimited Unlimited Unlimited

Notes:

  • Surface should be dry and free from any contamination

 

Curing time for DFT up to 30 µm (1.2 mils)


Substrate temperature Dry to Touch Dry to Handle
10°C (50°F) 1.5 hours 3 hours
20°C (68°F) 1 hour 2 hours
30°C (86°F) 45 minutes 1.5 hours
40°C (104°F) 30 minutes 1 hour

Notes:

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
7565

Data sheet

Manufacturer
PPG
Water / Solvent Based
Solvent
For Use On
Steel
Application Method
Spray
Sheen
Semi-gloss
Colour
Standard / Ready Mixed
Single, Two or Three Pack
Single
Pack Size
20L
Base Type
Silicone/acrylic
Mixing Ratio
-
Key Features
Excellent resistance against weathering, heat-resistant up to 350°C (660°F), widely compatible with inorganic zinc primers
Touch Dry (at 20°C)
1 hour
Dry to Handle (at 20°C)
2 hours
Dry to Recoat (at 20°C)
Minimum: 18 hours. Maximum: Unlimited
Fully Cured (at 20°C)
-
Pot Life (at 20°C)
-
Coverage
Aluminium: 16.8 m2/I for 25 µm (674 ft 2/US gal for 1.0 mils)
Recommended Thinner/Cleaner
For cleaning only: PPG Thinner 21-06
Unit Contents
-
Compatible Primers
-
Compatible Topcoats
Itself
Max. Application Temperature
-
Min. Application Temperature
At least 3°C (5°F) above dew point
Density
Aluminium: 1.1 kg/I (9.2 lb/US gal)
Solids by Volume
Aluminium: 42 ±2%
Heat Resistance (up-to)
350°C (660°F)
VOC
Directive 1999/13/EC, SED: max. 492 g/kg (white). Directive 1999/13/EC, SED: max. 491 g/kg (aluminium). max. 590.0 g/I (approx. 4.9 lb/gal) (white). max. 540.0 g/I (approx. 4.5 lb/gal) (aluminium)
Shelf Life (Once Opened)
At least 24 months when stored cool and dry
UN Number
UN1263
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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