Black Iron Wire

This is Black Iron Wire, also known as black annealed wire. Here's a detailed introduction:

Production Process

Made from low - carbon steel wire rods, it goes through a wire - drawing process. By pulling the rods through dies of different diameters, it can be made into various diameters (from extremely fine wires like hair to thicker construction - grade wires). Some are also annealed to reduce hardness and enhance flexibility for easier bending and shaping later.

Properties

1.Hardness & Toughness: Classified into hard and soft types. Hard black iron wire has high strength and rigidity, not easy to deform, suitable for scenarios needing shape retention. Soft (annealed) wire has good flexibility, easy to bend and bundle, common in daily binding.

2.Surface & Rust Resistance: No plating on the surface, so it’s prone to rust in humid or corrosive environments, limiting long - term outdoor use. But this also makes it cost - effective for low - rust - requirement, budget - conscious applications.

Applications

1.Construction: Used to tie steel bars, fixing the position of steel bar frameworks. It’s a basic and high - consumption item in construction. Hard wire ensures the stability of the steel structure. Also used for temporary safety nets, formwork support, etc.

2.Daily Bundling: Soft black iron wire is popular in logistics, agriculture for its ease of use—bundling cartons, packages, or securing crop straws, vines. Low - cost and convenient.

3.Craft Making: Handicraft enthusiasts use it for simple iron art (like wire paintings, small decorations). Its flexibility allows shaping, and though rust - prone, painting or aging treatments can give unique textures.

Pros & Cons

1.Advantages: Low cost, simple production, affordable price; diverse forms (various thicknesses, hardness) for different needs; soft type is easy to process, meeting flexible operation demands.

2.Disadvantages: Poor rust resistance, requiring extra protection (oiling, painting) for long - term outdoor use; hard type has low flexibility, easy to break when bent, needing careful handling.