Mipa EP 170-20 builds a zinc-rich 2K epoxy primer layer for long-term cathodic corrosion protection on steel. The coating is intended for bare, completely rust-free steel that has been blasted to Sa 2½. EP 170-20 creates the active zinc dust layer at the start of a heavy-duty protective coating system, where the steel surface needs durable protection before intermediate and finishing coats are applied.
EP 170-20 is polyamide-cured and grey-green in colour. The coating carries German Armed Forces TL 8010-0012 class A type 4 approval and is used in corrosion protection systems where steel preparation and coating sequence are critical. The material is mixed 24:1 by weight with Mipa EP 980-25 and reduced with Mipa EP-Thinner 971 when adjustment is required for the application equipment.
The zinc dust layer supports very high active corrosion protection. After application at 20 °C, EP 170-20 can be recoated from 30 minutes and remains recoatable up to 7 days under the documented technical conditions. A typical steel build uses EP 170-20 as the priming coat, followed by an epoxy intermediate coat such as EP 175-20 and a compatible PU finishing coat such as PU 246 or PU 249.
EP 170-20 also supports electrostatic application and offers permanent heat resistance up to 400 °C. The coating belongs in demanding steel protection work where the primer layer must bond to a correctly prepared blasted substrate and carry the corrosion protection function inside the coating build.
| Technical point | Value |
|---|---|
| Coating type | 2K epoxy zinc dust coating |
| Colour | Grey-green |
| Substrate | Bare, completely rust-free blasted steel, Sa 2½ |
| Protection role | Cathodic corrosion protection |
| Mixing | 24:1 by weight with Mipa EP 980-25 |
| Thinner | Mipa EP-Thinner 971 |
| Pot life | Maximum 24 hours at 20 °C with EP 980-25 |
| Recoating window | Earliest after 30 minutes at 20 °C, latest after 7 days |
| Heat resistance | Permanent heat exposure up to 400 °C |
| Pack size | 24 kg |
| Article number | 142690000 |
|---|---|
| EAN / GTIN | 4016176600551 |
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