Metals are categorized into various types, including multi-metals, ferrous metals, and precious metals. Black rust-preventive paper is primarily used for carbon steel, alloy steel, cast iron, steel phosphatization, steel nitriding, steel blackening, powder metallurgy, oriented silicon steel, and non-oriented silicon steel. It should never be used for the rust prevention of non-ferrous metals.

If using anti-rust paper to protect metal products, note that when choosing black metal anti-rust paper:

Rustproof Paper Thickness

2. Transparency of the rust-preventing paper and presence of impurities

Does the rust-preventing paper have a rust-preventing odor?

Corrosion-resistant paper, with its base material being corrosion-resistant kraft paper, is coated with VCI (Vapor Corrosion Inhibitor) liquid. The VCI is released slowly and continuously from the kraft paper within the appropriate space, forming a saturated gas layer in a relatively enclosed space, thereby providing corrosion protection for the metal materials in the environment. The types of corrosion-resistant paper include film-coated, embossed, and film-coated embossed, with different VCI grades required for various metals. The quality of the corrosion-resistant kraft paper requires a neutral pH value, with low sulfur and chlorine content in the paper. Additionally, the strength and absorbency of the paper are crucial for the later corrosion protection quality. The thickness of the corrosion-resistant paper directly affects its protective performance; generally, the thicker the paper, the more corrosion inhibitor it absorbs, resulting in better corrosion protection within the same space. Therefore, the choice of the corrosion-resistant kraft paper is also very important; good quality paper can serve as an excellent carrier for VCI inhibitors, while poor quality paper may not have as noticeable an effect.