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Corrosion Solutions
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Corrosion Protection
Modern protective coatings must balance strong adhesion on metal substrates, long-term corrosion resistance under salt spray and water exposure, compatibility with water-based systems, and increasingly strict environmental compliance requirements. Achieving all of these at the same time remains a key challenge for many manufacturers.
Molecular Formula: O8P2Sr3
608 Strontium Phosphate Yellow H forms a stable protective layer on metal surfaces and provides strong adhesion and anti-corrosion performance on aluminum alloy, aluminum-magnesium alloy and galvanized steel. It improves salt spray resistance, flash rust resistance, yellowing resistance and water resistance, while enhancing overall coating protection. Compared with conventional anti-corrosion pigments, it performs well at lower dosage and supports compliance with GB30981-2020 hazardous substance limits.
Molecular Formula: SrCrO4
801 Strontium Chrome Yellow (Strontium Chromate, Pigment Yellow 32) is an inorganic high-temperature yellow pigment mainly used in heat-resistant coatings, anti-corrosion primers for non-ferrous metals and traditional protective coating systems. It offers good heat stability and corrosion-inhibiting performance, and can also be used in plastics, rubber, inks and color blending applications.
Environmentally friendly anti-corrosion pigment solutions developed for regulation-conscious formulations and export-oriented applications.
Environmental Compliance608H can meet the hazardous substance limits of GB30981-2020 at a dosage of ≤2%. S-57 / S-58 comply with EU RoHS 2011/65/EU, (EU) 2015/863 and GB/T 26572-2011, and are free from heavy metals of concern.
Corrosion & Salt Spray Resistance608H shows salt spray resistance of over 400 hours in comparison testing. 801 Strontium Chrome Yellow delivers salt spray resistance of over 2000 hours. S-57 / S-58 can replace selected imported anti-corrosion products and provide salt spray resistance of over 400 hours.
System Compatibility608H is suitable for both water- and solvent-based systems, especially water-based epoxy, acrylic and alkyd. 801 is suitable for water- and solvent-based systems with heat resistance up to 500°C. S-57 / S-58 are suitable for two-component epoxy, two-component polyurethane, water-based acrylic, water-based epoxy and coil/powder coating systems.
Low Dosage & Easy ApplicationThe recommended dosage of 608H is 0.5–2. 801 can improve corrosion resistance at an addition level of 2–5 parts. S-57 / S-58 are typically used at around 5%, with easy dispersion and no major formulation adjustment required.
At equal dosage and film thickness, 608H shows comparable or better corrosion resistance than conventional pigments, with stable performance under salt spray testing.
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