Tin and tin-plated steel are relatively safe under normal use, but when baked at high temperatures, harmful substances may be released, especially when there are coatings or printed patterns in the can, these coatings and inks may decompose and release toxic substances at high temperatures.

The surface of tin cans usually has a silvery-white luster, while aluminum cans often have a silver-gray or bright silver luster. The surface of aluminum cans is smoother and more reflective.

Aerosol tin cans are filled with high-pressure gas. Under high temperature or severe vibration, the can may rupture, causing the contents to spray out, posing a safety hazard.

Common inner coating materials include epoxy resin, polyester, polyurethane and acrylic resin. These coating materials have good chemical resistance, heat resistance and adhesion, and can effectively ensure the safety and quality of the substance in the can.

Tin cans have excellent anti-corrosion properties, sealing properties and durability, and are widely used in food, chemical, pharmaceutical and electronic industries. However, tin cans also have disadvantages such as higher cost, weight, and susceptibility to chemical corrosion.