HS50 Acid-Resistant Coating

Overview
Two-component acid-resistant coating system supplied as primer, intermediate coating, and topcoat for severe corrosive environments.​

Composition
Epoxy-containing hydroxyl resin, corrosion-resistant pigments and fillers, solvent, additives; polyisocyanate adduct as curing agent; supplied as two components for primer/intermediate/topcoat.​

Typical uses
Protective and decorative coating for equipment and facilities in harsh corrosive conditions, including pickling plants, hot-dip galvanizing, electroplating plants, and petrochemical enterprises.​

Technical data (typical)

• Appearance: primer iron red; intermediate iron brown; topcoat various colors.​

• Theoretical consumption: primer 0.11 kg/m² (loss not included).​

• Theoretical consumption: intermediate 0.13 kg/m² (loss not included).​

• Theoretical consumption: topcoat 0.11 kg/m² (loss not included).​

• DFT: primer 40 µm; intermediate 45 µm; topcoat 40 µm.​

• Density: primer 1.40 kg/L; intermediate approx. 1.45 kg/L; topcoat 1.35 kg/L.​

• Drying time (25°C): surface dry 2 h; hard dry 24 h; full cure 7 d.​

Application data (25°C)

• Mixing ratio (A:B): 21:7.​

• Induction time: 5 min.​

• Pot life: 4 h.​

• Application methods: airless spray, brush, roller.​

• Thinner: HS dedicated acid-resistant thinner, 3–8%.​

• Recoat interval: min 24 h; max 7 d.​

• Recommended DFT per coat: 60–80 µm (brush/roller 30–40 µm).​

• System: HS50 primer + intermediate + topcoat.​

Surface preparation
Steel: blast to Sa 2.5 or power-tool clean to St 3; surface profile 30–75 µm.​

System compatibility / packing / storage

• System compatibility: HS50 acid-resistant primer + intermediate + topcoat.​

• Packing: Part A 21 kg; Part B 7 kg.​

• Storage: dry, cool, ventilated; away from fire; avoid strong sunlight; no outdoor storage.​

• Shelf life: 12 months.