Mi-Phos Z-4000 is a heavy immersion zinc phosphate formulated to exceed the requirements of GM 4435M, Ford S-2 and Chrysler PS-18 specifications. The Mi-Phos Z-4000 provides excellent corrosion protection on ferrous metal parts by depositing in excess of 2000 milligrams per square foot of crystalline zinc phosphate. When used with Metal Guard 320 or a Metal Guard 560, Mi-Phos Z-4000 can surpass 168 hours of ASTM B-117 salt spray protection.
- Nickel-Free Heavy-Zinc Phosphate for Immersion coatings
- Concentration of 3-4% by volume
- Optimum temperature between 160-175 degrees F