Carbon black is widely used as a black pigment, but it is not always the best choice. This article explains application scenarios where copper chromite black provides superior thermal stability, chemical resistance, and color durability. It clarifies the performance boundaries between conductive carbon blacks and inorganic black pigments.

Kela Copper Chrome Black (PBK528) is a high-performance inorganic black pigment produced exclusively by Kela Materials using a proprietary clean formulation.
Unlike conventional copper chrome black pigments on the market, Kela’s PBK528 contains absolutely no cobalt (Co), no aluminum (Al), and no barium (Ba)**.

Kela Materials is currently **the only manufacturer worldwide** that offers a Cu–Cr black pigment with this metal-free formulation, delivering superior safety, environmental compliance, and global regulatory advantages.

PBK528 provides an exceptionally pure black tone, outstanding heat resistance, weather stability, chemical durability, non-bleeding behavior, and excellent dispersion. It performs better than carbon black, iron oxides, and mixed-metal blacks in high-temperature coatings, engineering plastics, and outdoor applications.

With proven performance in demanding customer applications since 2009, PBK528 has earned consistent market recognition for its stability, color efficiency, and safe heavy-metal-free profile.