Zinc Phosphates

Zinc phosphate coatings for iron and steel are used as oil based corrosion inhibitors. They are also used as a paint base. Attractive black finishes and a corrosion resistant finish is available when sealed with one of EPI's E-Tec oil based corrosion inhibitors.

• E-Phos 660 — Microcrystalline zinc phosphate by immersion or spray. A calcium modified formulation which produces a fine-grained crystalline coating on iron and steel. Coating weight of 600 mg./sq. ft. It remains fine grained regardless of the cleaning method used prior to application. It is an excellent paint base and the fine-grained, low-porosity coating reduces paint consumption. Parts have some "bare" rust protection, so they do not have to be painted immediately. Liquid concentrate used at 4 to 6% by volume in water at 130° to 180°F. Meets MIL-P-16232.
   
• E-Phos 662 — Heavy zinc phosphate for steel with a coating weight of 1,500 to 2,500 mg./sq. ft. Meets Mil-P-16232. The absorptive coating is an excellent base for the retention of oils and EPI's E-Tec rust preventive coatings. Liquid concentrate used at 3 to 4% by volume in water at 190° to 200°F.
   
• E-Phos 664 — Low temperature heavy zinc phosphate for steel with a coating weight of 1,500+ mg./sq. ft. Operated as low as 140°F with good iron and sludge control. The oil absorptive coating is an excellent base for the retention of the E-Tec rust preventives. Meets Mil-P-16232. Liquid concentrate used at 2 to 4% by volume in water at 140° to 200°F
   
• E-Prep-B — Black zinc phosphates are produced on steel by using E-Prep-B as a pre-dip prior to zinc phosphating with E-Phos 660, E-Phos 662 and E-Phos 664.

Click below to view additional phosphate finishes offered by EPI:

• Iron Phosphate
• E-Phos 600
• E-Phos 601
• E-Phos 603
• E-Phos 605
   
• Manganese Phosphate
• E-Phos 630

Any unfinished ferrous metal, black oxide, or phosphate finish is not complete without rust prevention and sealant top coat. EPI offers a wide selection of top quality corrosion inhibitors and rust prevention solutions.