The material of black annealed iron wire

Black annealed iron wire is a universal metal product made from low-carbon steel through multiple processes such as drawing, pickling, baking, and annealing. Its main component is iron, while containing small amounts of elements such as carbon, sulfur, phosphorus, and manganese. The surface of black annealed iron wire appears black, and it has the characteristics of being soft, easy to bend, and not easy to break.