Black Annealed Wire
Black Annealed Wire
Soft, flexible wire for binding, tying, and construction applications
- Material
- Low Carbon Steel Q195
- Annealing
- Batch annealed
- Tensile
- 300-450 MPa
- Diameter
- 0.5mm - 5.0mm
- Packing
- Coils / cut lengths
Product Description
WANSUN Black Annealed Wire is produced by annealing low-carbon steel wire to achieve maximum softness and flexibility. This process creates a wire that is easy to twist, bend, and cut by hand, making it ideal for binding rebar, baling, tying, and general construction tying. The black oxide surface provides mild corrosion protection during the construction phase.
Full Specifications
| Material | Q195 low carbon steel |
|---|---|
| Wire Diameter Range | 0.5mm to 5.0mm (BWG 6-26) |
| Annealing Process | Batch annealing in controlled atmosphere |
| Tensile Strength | 300-450 MPa (soft) |
| Elongation Rate | 12-20% minimum |
| Surface Color | Black (dark grey oxide) |
| Coil Weight | 5-100 kg per coil (customizable) |
| Cut Lengths Available | 100mm to 1,000mm (U-type ties) |
| Packing Options | Coils, cut straight lengths, U-tie bundles |
| Yield Strength | 200-350 MPa |
| Softness Rating | Easy hand-twist (0.8-2.0mm) |
| Standards | ASTM A641 (annealed), GB/T 343 |
Key Features
Maximum Softness
Annealed to achieve optimal softness for easy hand twisting and tying without tools.
Consistent Quality
Batch annealing in controlled atmosphere ensures uniform softness across entire coil.
Multiple Formats
Available in coils, straight cut lengths, and U-type ties for rebar tying.
Cost Effective
Lower cost than galvanized alternatives while providing sufficient protection for construction-phase use.
Applications
Rebar Tying
Baling & Packaging
Construction Binding
General Tying
Frequently Asked Questions
Can black annealed wire be used outdoors permanently?
Black annealed wire is primarily designed for temporary or construction-phase use. The black oxide surface provides only mild corrosion protection. For permanent outdoor applications, we recommend our galvanized wire products.
What is the difference between black annealed wire and galvanized wire?
Black annealed wire is softer, more flexible, and less expensive. It has a black oxide surface with minimal corrosion resistance. Galvanized wire has a zinc coating for corrosion protection but is slightly stiffer due to the coating process.
Can you supply pre-cut U-type ties?
Yes, we supply U-type cut ties in lengths from 100mm to 1,000mm. These are popular for rebar tying in concrete reinforcement. Pre-cut ties save time on construction sites and are available in bundles of 500-1,000 pieces.
What is the most popular size for construction binding?
For general construction tying and rebar binding, 20SWG (0.9mm) and 18SWG (1.2mm) are the most common sizes. For heavier binding applications, 16SWG (1.6mm) is preferred.
