🧵 4.0 mm wire (black, annealed) - maximum strength for industrial applications
4.0 mm black annealed tie wire is a steel product designed for extreme mechanical loads. Its large cross-section provides a highly reliable and rigid connection where standard diameters are insufficient. The required heat treatment relieves internal stresses in the steel, so the wire does not crack or break during heavy-duty twisting.
🔩 Engineering specifications (ГОСТ 3282-74)
Use the following standard parameters for accurate cost estimates and logistics planning:
- Diameter: 4.0 mm (permissible deviation ±0.16 mm).
- Cross-sectional area: 12.56 mm².
- Mass per metre: 0.09865 kg.
- Metres per kilogram: ~10.1 m.
- Tensile strength: 300-550 N/mm² (MPa).
- Elongation: at least 15% (required to form reliable joints without breakage).
🏗️ Main applications
4.0 mm wire is the choice for large-scale projects with high loads:
- Heavy construction: tying industrial foundations, columns, bridge supports, and pylons using large-diameter reinforcement (from 25 mm to 32+ mm).
- Transport packaging: heavy-duty tying of steel products (beams and channels), large-diameter pipes, and round timber for safe rail or road transport.
- Formwork installation: making ties to hold heavy panels when pouring large monolithic slabs and walls.
- Manufacturing: producing nails, rivets, high-strength welded mesh, and anchors.
✅ Advantages of SteelStream material
- ГОСТ compliance: No compromises on thickness. You receive an accurate 4.0 mm diameter, ensuring the calculated tensile strength.
- Quality annealing: Despite its thickness, the wire is not excessively brittle. It is ductile and allows a secure, tight joint to be formed.
- Time savings: Using this diameter can often replace welding, speeding up reinforcement cage installation.
📦 Supply and service
- Dispatch from 5 kg (for convenient unwinding from large industrial coils).
- Payment on receipt at your site (cash or cashless payment).
- Prompt delivery using our own vehicles (crane trucks and flatbeds) in Kyiv, Vyshneve, Brovary, Irpin, and across the region.
- Order picking and packaging to prepare your goods before you arrive at the depot for collection.
🔗 Related products for your project
Assemble your large order at one metal depot and save on logistics:
- 16 mm A500C reinforcing bar - standard steel for solid slabs.
- 25 mm A500C reinforcing bar - for industrial strip foundations and grillages.
- I-beam - an H-shaped profile for high load-bearing capacity.
- Steel channel - for installing intermediate floors and frames.
- Welding services - fabrication of load-bearing metal structures at the company workshop.
- Metal bending - preparation of reinforcement elements to individual drawings.
4.0 mm wire is not a compromise - it is the choice for ultra-strong connections. SteelStream keeps this product in stock. Call us, and we will quickly calculate the tonnage required for your project!