Railway vehicles
Exterior surfaces of passenger carriages, locomotives and multiple-unit rolling stock.
Ready-to-use paint or coating
AKRYL 2K Epoxy Primer
A two-component primer for initial priming of prepared metal. Part of a protective and decorative coating system for passenger carriages and locomotives.
TypeTwo-component
LayerInitial primer
Base : hardener20 : 4 by mass
Thickness40-55 µm
About the material
The initial layer in the coating system
Component A contains pigments, fillers and additives in an epoxy resin. Component B is an amine-type hardener. The material is intended for priming exterior body surfaces of passenger carriages, locomotives and multiple-unit rolling stock.
Material selection and the application process depend on the substrate, previous coats and service conditions. Request the current TU specification and instructions before use.
Purpose
Where the material is used
The list is based on the AKRYL presentation. Suitability for a specific project is confirmed through technical selection.
Other vehicles and equipment
Cars, urban transport, agricultural and road machinery, using an agreed application procedure.
Metal structures
Carbon, stainless and galvanised steel, aluminium and other metals with suitable preparation.
Specifications
AKRYL 2K Epoxy Primer: specifications
Values are taken from the company presentation. Before ordering, check them against the current TU specification and the supplied material's quality documentation.
| Base-to-hardener ratio by mass | 20 : 4 |
|---|---|
| Pot life after mixing at 20 ± 2 °C | At least 2 h |
| Coating thickness | 40-55 µm |
| Non-volatile content by mass | At least 75 % |
| Drying to degree 3 at 20 ± 2 °C | No more than 4 h |
| Adhesion | No more than 1 point |
| Flexibility on bending | No more than 1 mm |
| Direct impact resistance | At least 50 cm |
| Water resistance at 20 ± 2 °C | At least 24 h |
| Resistance to 3 % NaCl solution at 20 ± 2 °C | At least 8 h |
| Working flow time, VZ-246(4) cup | 25-50 s |
| Thinning level | No more than 5 % |
| Time before sanding at 20 ± 2 °C | No more than 8 h |
| Theoretical consumption for a two-coat film of 40-55 µm | 100-200 g/m², depending on colour |
| Drying to degree 3 at (60+2) °C | No more than 2 h |
These are individual material specifications, not test results for the complete system. Requirements and test methods must be checked against current technical documentation.
Preparation
What to check before application
Prepare the substrate
The surface must be clean and dry. Check the cleaning procedure and acceptable metal condition against the current TU specification.
Mix the components
Mix the base and hardener immediately before application at the specified mass ratio.
Check the system
Confirm thickness, intercoat drying and compatibility with subsequent materials using the project's application procedure.
Components, application and storage
| Component B | AKRYL 2K EP Hardener, TU 20.59.59-061-49740748-2025 |
|---|---|
| Mixture preparation | Stir the base and hardener separately first. After mixing, allow 10-15 minutes before application. |
| Application | Air or airless spray; two coats with a total dry film thickness of 40-55 µm. |
| Conditions | From +10 °C; relative humidity no more than 80 %; surface temperature at least 3 °C above the dew point. |
| Intercoat drying | 4 h; check the conditions for the specific project against the application instructions. |
| Thinner | Agree the thinner grade with the technologist using the current instructions. Do not replace an EP thinner with a PU thinner without confirming compatibility. |
This information is taken from the manufacturer's materials and does not replace the current application instructions. Request them for the selected material and project before application.
Theoretical consumption is given for the specified coating thickness. Actual consumption depends on application methods and conditions, roughness, object geometry and process losses.
Request AKRYL 2K Epoxy Primer
Specify the object to be coated, substrate material, service conditions, required colour, area and application method. We will clarify technical documents and supply terms.
Individually or as a systemIndividual materials from the 2K system can be requested separately. Compatibility with other coatings must be checked.
Questions
What to clarify before ordering
Is this a ready-to-use primer or a raw material for paint production?
It is a ready-to-use two-component coating. Mix the base with the hardener before application.
Can it be purchased separately from the system?
Yes, you can request the material separately. Compatibility with a different coating system must be checked separately.
What is the service life of the primer on its own?
The periods in the VNIIZhT conclusion apply to the tested four-material system. They are not attributed to the primer on its own.
How should the metal surface be prepared?
Remove dust, oil, grease and poorly adhering coatings. The presentation specifies abrasive blast cleaning or mechanical treatment to the required cleanliness level; check the exact procedure against the TU specification.
At what temperature can the primer be applied?
The instructions in the presentation specify at least +10 °C, relative humidity no more than 80 %, and metal temperature at least 3 °C above the dew point.
How is the primer applied?
Airless and air spray are listed. Select the method and working viscosity using the project instructions.
When can the next coat be applied?
The presentation specifies 4 h of intercoat drying. Confirm the conditions for the specific system and application using the application instructions.
Catalogue