Product Data Sheet Show all documents

Sika® FerroGard®-950 IN

Epoxy based zinc rich protective coating and primer for steel reinforcement

Sika® FerroGard®-950 IN is two component, low solvent, zinc rich epoxy resin based protective coating and anti-corrosive primer for steel. The use of Sika® FerroGard®-950 IN provides a method of applying galvanic protection by standard paint application methods. It is a cold galvanizing compound preventing corrosion of steel substrates similar to hot dip galvanizing. When applied to a ferrous surface, the zinc in Sika® FerroGard®-950 IN acts as the anode and sacrifices itself to protect the steel, which acts as the cathode.

  • Excellent corrosion protection
  • Easy to apply
  • Fast application
  • High mechanical properties
  • Good adhesion to substrate
  • Fast drying and curing
  • Resistant to weathering
  • Single coat protection for steel
Product Data Sheet Show all documents

Usage

  • Single coat finish on steel objects which are subject to atmospheric exposure or in multiple coat paint systems as a protective primer
  • Anti-corrosion coating for steel structures which are subjected to mechanical wear, e.g., weirs, interior of pressure pipe line, gates, steel liner of penstocks and tanks, etc.
 
  • Protective coating for reinforcement steel bars in reinforced concrete and as a repair material for galvanized steel which has been damaged by cutting, punching, drilling or mechanical damage suffered during transit or during erection works.
   IMPORTANT Not recommended for:
  • Immersion without suitable top coats
  • Exposure to strong acids and alkalis

Advantages

  • Excellent corrosion protection
  • Easy to apply
  • Fast application
  • High mechanical properties
  • Good adhesion to substrate
  • Fast drying and curing
  • Resistant to weathering
  • Single coat protection for steel

Packaging

Part A+B2.00 kg

Part A

1.88 kg

Part B

0.12 kg

Colour

Part AGrey liquid
Part BLight brown liquid

Product Details

Product Information

Chemical base

Zinc rich epoxy resin

Shelf life

12 months from date of production

Storage conditions

The product must be stored properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5 °C and +35 °C. Protect from frost.

Density

~2.15 kg/L (Part A+B mixed, +27 °C)

Solid content by weight

Total solids

~76 %

Zinc content in mix

~66 %

Zinc content in dry film

> 85 %
Technical Information

Tensile adhesion strength

≥ 2.0 N/mm2 (steel substrate, 7 days, +30 °C)

(ASTM D4541)

Thermal resistance

Permanent exposure of dry heat upto +50 °C (No simultaneous chemical and mechanical exposure)

Application

Application Information

Mixing ratio

Part A : Part B = 94 : 6 (by weight)

Ambient air temperature

+8 °C min. / +35 °C max.

Relative air humidity

75 % max.

Substrate temperature

+8 °C min. / +35 °C max.

Substrate moisture content

< 4 %

Test method: Sika® Tramex meter, CM - measurement or Oven-dry-method.

No rising moisture according to ASTM (Polyethylene-sheet).

Pot life

~2 hours (2 kg, +30 °C)

Curing time

TemperatureFull cure

+10 °C

~10 days

+20 °C

~7 days

+30 °C

~7 days

Tack free time

~20 min (+30 °C)

Waiting time / Overcoating

Before applying Sika® FerroGard®-950 IN on Sika® FerroGard®-950 IN

TemperatureOvercoating time

+10 °C

~4 hours

+20 °C

~2 hours

+30 °C

~1 hour

Before applying top coat on Sika® FerroGard®-950 IN

TemperatureOvercoating time

+10 °C

~8 hours

+20 °C

~4 hours

+30 °C

~2 hour
Consumption

Consumption

~0.150–0.250 kg/m2

These figures are theoretical and do not allow for any additional material due to surface porosity, surface profile, variations in level and wastage etc.
Application steps

EQUIPMENT

Mixing Equipment

  • Electric single paddle mixer (300–400 rpm)

  

Application Equipment

  • Brush: Soft bristle
  • Spray: Airless spray machine

SUBSTRATE QUALITY

The substrate must be clean, dry and free of all contaminants such as rust, dirt, oil, grease, coatings and surface treatments, etc. If in doubt apply on a test area first.

SUBSTRATE PREPARATION

Steel must be blast cleaned to Sa 2.5 according to EN ISO 12944, Part 4. Alternatively, use a rust remover such as Sika® Rustoff-100 and use waterjet to make steel rust free.

MIXING

IMPORTANT
Mix full units only

  1. Mix Part A (resin) until the material is dispersed and a uniform colour is achieved.
  2. Add Part B (hardener) to Part A.
  3. Mix Part A+B continuously for 2 minutes until a uniformly coloured mix is achieved. Note: Avoid excessive mixing to minimise air entrainment.
  4. To ensure thorough mixing, pour materials into another container and mix again for 1 minute to achieve a smooth and uniform mix.
  5. During the final mixing stage, scrape down the sides and bottom of the mixing container with a flat or straight edge trowel at least once to ensure complete mixing.
 

APPLICATION

Brush Application

Apply 1 or 2 coats of coating with a soft brush.

  

Spray Application

Using a airless low pressure sprayer, apply a single application sufficient to wet the surface. Avoid over application.

CLEANING OF TOOLS

Clean all the tools with Sika® Thinner C immediately after use. Hardened material can only be removed mechanically.

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