SikaCor® EG-1
High-solid epoxy-based intermediate coat
SikaCor® EG-1 is a 2-pack intermediate coat based on epoxy resin containing micaceous iron oxide. Low solvent content according to Protective Coatings Directive of German Paint Industry Association (VdL-RL 04).
- Excellent adhesion to hot dip galvanized steel, zinc spraying, stainless steel and aluminium
- High film thickness per coat (up to 120 μm)
- Very good corrosion protection
- Tough elastic and hard but not brittle
- Largely insensitive against shock and impact
Usage
Designed as a mechanically resistant intermediate coat on steel surfaces exposed to atmospheric conditions, hot-dip galvanized steel, zinc spraying, stainless steel and aluminium. In combination with 2-pack primer and top coats, SikaCor® EG-1 is a mechanically water and chemically resistant coating system for durable corrosion protection, corrosivity category C5 high according to ISO 12944-2.Advantages
- Excellent adhesion to hot dip galvanized steel, zinc spraying, stainless steel and aluminium
- High film thickness per coat (up to 120 μm)
- Very good corrosion protection
- Tough elastic and hard but not brittle
- Largely insensitive against shock and impact
Packaging
| SikaCor® EG-1 | 30 kg, 15 kg and 3 kg net |
| Sika® Thinner EG | 25 L, 10 L and 3 L |
| SikaCor® Cleaner | 25 L |
Colour
Grey metallic approx. DB 701
Grey metallic approx. DB 702, mat.-no. 687.12
Grey metallic approx. DB 703, mat.-no. 687.13
Green metallic approx. DB 601, mat.-no. 687.14
White
Slight colour deviations are possible due to raw material characteristics.
Product Details
APPROVALS / STANDARDS
- Approved according to German standard ‘TL/TP-KOR-Stahlbauten’, page 87.
- Suitability on galvanizing according German guideline 'AGK B1'.
Shelf Life
3 years
Storage Conditions
In originally sealed containers in a cool and dry environment.
Density
~ 1.6 kg/L
Solid Content
~ 60 % by volume
~ 77 % by weight
Chemical Resistance
Weather, water, sewage, seawater, smoke, de-icing salts, acid and lye vapours, oils, grease and short term exposure to fuels and solvents.
Thermal Resistance
Dry heat up to +150 °C, short term up to +180 °C Damp heat up to approx. +50 °C In case of higher temperatures please consult Sika.
Application
Mixing Ratio
Components A : B |
By weight | 90 : 10 |
By volume | 4.7 : 1 |
Thinner
Sika® Thinner EG If necessary max. 5 % Sika® Thinner EG may be added to adapt the viscosity.
Product Temperature
Min. +5 °C
Relative Air Humidity
Max. 85 %, except the surface temperature is significantly higher than the dew point temperature, it shall be at least 3 K above dew point.
Surface Temperature
Min. +5 °C
Pot Life
| At +10 °C | ~ 12 h |
| At +20 °C | ~ 8 h |
| At +30 °C | ~ 5 h |
Drying Stage 6
| Dry film thickness 80 μm | |
| +5 °C after | 12 h |
| +10 °C after | 9.5 h |
| +20 °C after | 6 h |
| +40 °C after | 75 min |
| +80 °C after | 20 min |
Waiting Time / Overcoating
Min. until drying stage 6 is achieved
Max. 4 years
In case of longer waiting times please contact Sika.
Prior to further applications possible contamination must be removed.
Drying Time
Final drying time
Depending on film thickness and temperature full hardness is achieved after 1–2 weeks. Tests of the completed coating system should only be carried out after final curing.
Consumption
Theoretical material-consumption/VOC without loss for medium dry film thickness:
| Dry film thickness | 80 μm |
| Wet film thickness | 135 μm |
| Consumption | ~ 0.215 kg/m2 |
| VOC | ~ 49.1 g/m2 |
With SikaCor® EG-1 up to 120 μm dry film thickness per application can be achieved by spray.
SURFACE PREPARATION
Steel: Blast cleaning to Sa 2 ½ according to ISO 12944-4. Free from dirt, oil and grease. Hot dip galvanized steel, stainless steel and aluminium: Free from dirt, oil, grease and corrosion products.
In case of permanent immersion and condensation the surfaces must be slightly sweep blasted with a ferrite-free blasting abrasive.
Zinc spraying must be sealed and porefree. For contaminated surfaces e.g. galvanized or primed areas we recommend cleaning with SikaCor® Wash.
MIXING
Stir component A very thoroughly using an electric mixer (start slowly, then increase up to approx. 300 rpm). Add component B carefully and mix both components very thoroughly (including sides and bottom of the container). Mix for at least 3 minutes until a homogeneous mixture is achieved. Fill mixed material into clean container and mix again shortly as described above. During mixing and handling of the materials always wear protective goggles, suitable gloves and other protective clothings.
APPLICATION
The method of application has a major effect on achieving uniform thickness and appearance. Spray application will give the best results. The indicated dry film thickness is easily achieved by airless spray. Adding solvents reduces the sag resistance and the dry film thickness. In case of application by roller or brush, additional applications may become necessary to achieve the required coating thickness, depending on type of construction, site conditions, colour shade etc. Prior to major coating operations a test application on site may be useful to ensure the selected application method will provide the requested results.
By brush and roller Conventional high pressure spraying:
- Nozzle size 1.5–2.5 mm
- Pressure 3–5 bar
- Oil and water trap is compulsory
Airless-spraying:
- Pressure min. 180 bar
- Nozzle size 0.38–0.53 mm (0.015–0.021 inch)
- Spraying angle 40°–80°
CLEANING OF TOOLS
SikaCor® Cleaner