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Si 57 E

Epoxy-Phenolic based Heat Cured Hydrophobic Lining for Strong Alkalis to Weak Acidic Media. High Gloss, Brown Finish

SÄKAPHEN Si 57 E is a high-quality hydrophobic single-component epoxy-phenolic based thermosetting heat cured lining. Si 57 E is self-priming and developed for direct to metal application.

Si 57 E is chemically resistant to a variety of substances ranging from strong alkalis to weak acidic media, salt solutions, greases, oils and gases and all types of cooling water including brackish, river, sea water and deionized water. Si 57 E is also resistant to temperature fluctuations.

The lining film surface is hard elastic with exceptional hydrophobic properties, preventing caking, fouling and incrustation. Once polymerized, the lining is fully machinable with a formaldehyde concentration level of less than 0.1%.

For the lining and coating of Heat Exchangers, Turbines, Impellers, Pipework, Meter Provers (Prover Loops), Waste Water Treatment Plants, Centrifuges and Tanks.

Product nameUnitSÄKAPHEN® Si 57® E  
 Properties-Heat Cured Duroplast  
 Resin base-Phenolic epoxy resin blend  
 Field of Application-For coating of heat exchangers, impellers, turbines, fans, compressors, tanks, containers, parts of water treatment, centrifuges, piping and proover loops.  
 Cure Mechanism-Heat cured  
 Quantity of components-1  
 General chemical resistance (All resistances have to be inquired separately!)-Resistant to various substances ranging from strongly alkaline to weak acidic media, all type of cooling waters including brackish, river, sea and deionized water, salt solutions, greases, oils, solvents, gases.  
 pH RangepH3 - 14  
 Wet Film Thickness per layerµm100  
 Total dry film thicknessµm180-200  
 Coverageapprox. kg/m²/DFT1,0 kg / m² / 200µm  
 Surface PreparationSaSA2 ½ - SA 3  
 Surface Profileµm40 - 60 µm  
 Temperature resistance dry
(dry air oven)
°C-20°C to +180°C/200°C  
 Temperature resistance wet (water)°C-20°C to +180°C/200°C  
 Resistance to water vapor diffusion°C< Δ 30°C  
 Overcoating Waiting Timehours/23°Cno limitations  
 Chemical Curingdaysafter final bake  
 Linear Thermal Expansionµm(VDE 0304): 44*10-6 mm/mm°C  
 Pore testingVolts67,5  
 Pendulum hardness acc. to König6° sec200  
 Shore D HardnessShore D94  
 Adhesion TestN/mm² [MPa]>30  
 Salt spray testhours1400  
 Impact Strengthmm (1 kg)> 1000  
 Surface smoothness (Ra)µm
Ø 3 readings
 Surface tensionmN/m<28  
 Taber Abrasion resistance, CS17 wheel, 1kgmg/1000 r.27  
 Crosscutclass0 (DIN EN ISO 2409)  
 Heat conductivity
Ø 12,7x2,0mm on C-Steel with 67,37 w/mK

Epoxy-phenolic hybrid systems are characterized by a greatly improved alkaline resistance, significantly increased adhesive strength (including when applied to smooth surfaces) and achieving adhesion pull-off values of greater than 40 MPa.

SÄKAPHEN Heat Cured Linings and Coatings

High-End Corrosion Protection and Carbon Footprint Reduction

Feel free to contact us for technical advice.

For any specific chemical resistances, fields of use, technical questions or other lining and coating queries, please feel free to contact us for technical advice.

Tel.: +49 20439470 or Email: info[at]

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