Epoxy and zinc-rich primer for metal in Tashkent
A primer is the coat with which the anti-corrosion system of a steel structure begins. In Tashkent, STATERM offers primers for metal from its own STACOR range: the two-component epoxy primers STACOR EP and Stacor EP Rapid, the zinc-rich Stacor EP Zinc and, for chemically aggressive environments, the Stacor EP HS epoxy coating. The materials are made in Uzbekistan. Below are the data from the product pages and how to choose a primer for the service conditions.
STACOR primers: purpose according to the product pages
STACOR EP — epoxy primer for metal
A two-component epoxy primer with active anti-corrosion pigments and fast drying. It is used as a stand-alone coating for metal or as a primer coat under polyurethane, alkyd, acrylic-urethane and epoxy enamels. It is designed for rural, urban, industrial and coastal atmospheres — up to corrosivity category C5-M according to ISO 12944. Film thickness is 75–275 µm. The product page notes its use at steel fabrication plants.
Stacor EP Rapid — zinc phosphate primer with short drying time
A two-component amine-cured anti-corrosion epoxy primer with zinc phosphate. According to the product page, it is a surface-tolerant primer: it is used as a primer and intermediate coat in three-coat systems for steel, stainless steel, aluminium and galvanized surfaces, and also as a repair material. It is recommended for steel fabrication plants and for corrosive environments C2-C5 according to ISO 12944-2.
Stacor EP Zinc — zinc-rich epoxy primer
The product page describes the material as a zinc-filled, barrier-type epoxy primer for steel with a high zinc content, designed for long-term cathodic protection of steel structures in extremely aggressive environments. It is used for anti-corrosion protection of steel and pipelines under corrosion loads up to CX according to ISO 12944-2. It is recommended for offshore environments, oil refineries, power plants, bridges, buildings, mining equipment and general-purpose structural steel. Film thickness, volume solids and application conditions are not stated on the product page — please check them by phone.
Stacor EP HS — chemical-resistant epoxy coating
This is not a primer but a two-component, chemical-resistant, low-solvent epoxy coating for steel and concrete. It is applied in a single coat up to 500 µm thick. Combined with two-component intermediate and top coats, it forms systems resistant to mechanical, chemical and atmospheric attack — up to corrosivity category CX according to ISO 12944-2.
Comparison based on the product pages
| Material | Type | Corrosivity category | Volume solids | Dry film per coat | Application temperature |
|---|---|---|---|---|---|
| STACOR EP | epoxy primer with active anti-corrosion pigments | up to C5-M (ISO 12944) | 80 ± 3 % | 100 µm (range 75–275 µm) | from 0 °C to +50 °C; down to −10 °C with winter hardener |
| Stacor EP Rapid | amine-cured epoxy primer with zinc phosphate | C2-C5 (ISO 12944-2) | 70 ± 2 % | 100 µm | from +5 °C to +40 °C |
| Stacor EP Zinc | zinc-filled barrier-type epoxy primer | up to CX (ISO 12944-2) | — | — | — |
| Stacor EP HS | chemical-resistant epoxy coating for steel and concrete | up to CX (ISO 12944-2) | 90 ± 3 % | 300 µm (up to 500 µm) | from 0 °C to +50 °C; down to −10 °C with winter hardener |
“—” means the value is not stated on the product page.
How to choose a primer for metal
- Aggressiveness of the environment. The product pages state corrosivity categories according to ISO 12944: Stacor EP Rapid — C2-C5, STACOR EP — up to C5-M, Stacor EP Zinc and Stacor EP HS — up to CX.
- Surface preparation. STACOR EP and Stacor EP HS require abrasive blast cleaning to Sa 2½ according to ISO 8501-1. The Stacor EP Rapid page describes it as surface-tolerant: besides Sa 2½, Sa 2 and St 2 are permissible, as well as manually prepared surfaces. It is also listed as a repair material.
- Substrate. For galvanized steel, stainless steel and aluminium, the range lists Stacor EP Rapid. For steel and concrete in chemically aggressive environments — Stacor EP HS.
- Working season. STACOR EP and Stacor EP HS are applied from 0 °C to +50 °C, and down to −10 °C with winter hardener. Stacor EP Rapid — from +5 °C to +40 °C.
- Coating system. STACOR EP works on its own or under enamels; Stacor EP Rapid — as a primer and intermediate coat in three-coat systems; Stacor EP HS — in combination with two-component intermediate and top coats.
The coating system for a specific project and service environment is selected by STATERM specialists — see the “Anti-corrosion protection of structures” page for details.
Application conditions and packaging
- Relative air humidity during application — 30…80 %; surface temperature — at least 3 °C above the dew point (STACOR EP, Stacor EP Rapid, Stacor EP HS).
- Application methods — brush, roller, air and airless spray.
- Packaging: STACOR EP and Stacor EP HS — 20 kg kit (component A — 16 kg, component B — 4 kg); Stacor EP Rapid — 22.5 kg kit (component A — 18.5 kg, component B — 4.0 kg). The packaging of Stacor EP Zinc is not stated on its product page.
- Shelf life of STACOR EP, Stacor EP Rapid and Stacor EP HS — 12 months from the date of manufacture in tightly sealed packaging.
- Technical data sheets in PDF are published on the STACOR EP, Stacor EP Rapid and Stacor EP HS product pages.
Frequently asked questions
How does a zinc-rich primer differ from an ordinary epoxy primer?
Stacor EP Zinc is a zinc-filled, barrier-type epoxy primer with a high zinc-dust content; according to its product page, it is designed for long-term cathodic protection of steel in extremely aggressive environments, up to category CX according to ISO 12944-2. STACOR EP is an epoxy primer with active anti-corrosion pigments for environments up to C5-M according to ISO 12944.
Can epoxy primer be applied in winter?
STACOR EP and Stacor EP HS are applied at temperatures from 0 °C to +50 °C, and down to −10 °C with winter hardener, in which case the drying time increases. Stacor EP Rapid is applied from +5 °C to +40 °C. The surface temperature must be at least 3 °C above the dew point.
Which primer is suitable if abrasive blast cleaning is not possible?
The Stacor EP Rapid product page describes it as a surface-tolerant primer suitable for manually prepared surfaces; it is also used as a repair material. For STACOR EP and Stacor EP HS, the product pages specify abrasive blast cleaning to Sa 2½ according to ISO 8501-1.
Is there an epoxy primer for galvanized steel and aluminium?
Yes, the Stacor EP Rapid product page states its use in three-coat systems for steel, stainless steel, aluminium and galvanized surfaces.
Does the primer need to be top-coated with enamel?
STACOR EP is used on its own or as a primer under polyurethane, alkyd, acrylic-urethane and epoxy enamels. Stacor EP Rapid works in three-coat systems, and Stacor EP HS in combination with two-component intermediate and top coats. The system is selected for the service environment of the project.
To buy STACOR epoxy or zinc-rich primer in Tashkent and select a coating system, contact STATERM: +998 90 918 81 88. The whole range is in the “Materials” section; a trial sample can be ordered on the product pages.