Wire temper
Hard drawn wire has more springback and may loosen after twisting. Soft annealed tying wire more readily retains its formed shape. Include the temper explicitly in the enquiry alongside diameter.
dwg AVX-1808 · Products
Tying wire & binding wire
Every micron engineered. Every millisecond protected.
Definition
Tying wire is soft annealed wire used for bundling and fastening. It is supplied on coils, spools or as pre-cut loop ties. Annealing reduces springback so the twist holds the connection. Tying wire is not intended as a load-bearing component. The finish must suit the environment to limit corrosion, particularly at the cold-worked twist.
Also known as: binding wire · black annealed wire · rebar tie wire · bale ties · loop ties · soft annealed wire
Diameter alone is not enough to select tying wire. Temper and finish also determine whether the wire is easy to use and suitable for its environment. Wire that is too hard can spring back. Insufficient corrosion protection can cause rust and staining on the tied material.
We supply tying wire in soft annealed steel, galvanised steel and stainless 304 or 316L. Formats include coils, spools for tying tools and pre-cut loop ties. Include diameter, finish and annual quantity in the enquiry. State the spool format or cut length if the wire must fit existing equipment. Availability and lead time are confirmed at quotation.
Finish needs particular attention when the tie remains in a process. Zinc flakes may contaminate product in food and pharmaceutical applications. Zinc on austenitic stainless can cause embrittlement when heated during repair welding. Stainless 316L should therefore be assessed for wet or chloride-bearing environments and washdown. A galvanised tie may be a source of corrosion or contamination in these conditions.
Where it is used
- Bundling bar, tube and profile for transport
- Tying reinforcement bar and mesh on site
- Fixing mesh panels to frames, posts and support structures
- Securing insulation, pipe lagging and cladding
- Baling and compacting recyclables and packaging waste
- Temporary fastening and hanging during maintenance and shutdowns
| Property | Value |
|---|---|
| 0.4–4.0 mm (0.8–2.0 mm most common) | |
| soft annealed (dead soft); elongation typically specified as a minimum from ≈ 12 % | |
| ≈ 300–550 N/mm² annealed steel; ≈ 500–750 N/mm² annealed stainless, higher in fine diameters | |
| bright annealed, black annealed, electro- or hot-dip galvanised, PVC-coated, stainless uncoated | |
| electro ≈ 5–30 g/m²; hot-dip from ≈ 30 g/m² upwards, set by class and wire diameter (EN 10244-2 class A/B) | |
| usual steps 1, 2, 5, 10 and 25 kg; mill coils from ≈ 100 kg | |
| 0.5–5 kg; tool spools in the tying machine's own format | |
| common lengths ≈ 100–450 mm, single or double loop, pre-cut and pre-twisted; other lengths on request | |
| low-carbon steel, galvanised steel, stainless 304 and 316L |
Values shown are standard industry ranges for soft annealed tying wire. They are not a commitment. Diameter, temper, finish and zinc coating are confirmed per application after technical review. The same applies to coil or spool format and cut length.
What to specify
Finish and environment
Bright annealed wire has been softened after drawing. Bright drawn wire has not had that treatment and has more springback. Bright and black annealed tying wire are used indoors and for temporary ties. The thin oil film on black annealed wire provides limited rust protection. Galvanising provides more protection outdoors. Assess stainless for wet, chloride-bearing, food or process applications. State the environment and required service life.
Tying method
Ties can be made by hand, with pincers or with a battery tying tool. Ready-made loop ties are also available. Tool use requires a compatible diameter, spool format and coating. Include the make and model in the enquiry. Pre-cut double-loop ties may save handling time in repetitive manual work. Compare their higher unit price with labour costs.
Diameter, packaging and quantity
Common diameters for reinforcement and mesh are around 1.0 to 1.6 mm. Bundling bar and profile often requires heavier wire. Coils of 1 to 5 kg are easier to carry than 25 kg coils. State diameter, coil or spool weight and any cut length. Include the quantity per call-off. Availability and lead time are confirmed at quotation.
Materials & variants
Soft annealed low-carbon steel is the standard. It is available bright annealed, black annealed or galvanised for additional corrosion protection. Stainless 304 is an option for general corrosive conditions. Assess 316L for chlorides, washdown or product contact. PVC-coated wire is available for outdoor and horticultural work. Duplex, Inconel and Monel are possible for special applications. Availability and lead time are confirmed at quotation.
Frequently asked questions
What is the difference between tying wire and binding wire?
Both names are used for the same type of soft annealed wire. The term varies by trade and country. Dutch uses binddraad; German uses Bindedraht or Rödeldraht. Specify diameter, temper and finish to define the required wire.
Why does my tying wire spring open when I twist it?
One possible cause is hard or bright drawn wire that has not been sufficiently annealed. Bright drawn is different from bright annealed wire, which is heat-treated after drawing. Soft wire holds a sharp bend more readily; hard wire springs back. Check the product designation if uncertain.
When do I have to use stainless binding wire?
Assess stainless when a tie remains in a corrosive environment or in contact with product. Examples include washdown areas, chloride-bearing water and parts inside process vessels or filter housings. Galvanised steel may cause corrosion or contamination there. The choice between 304 and 316L depends on actual conditions.
Can I use galvanised tie wire on a stainless steel structure?
Assess this before use. Zinc in contact with stainless may corrode preferentially and leave deposits. Zinc on austenitic stainless may also cause embrittlement when heated during welding. Stainless tying wire avoids adding zinc to the connection.
When should I choose black annealed or galvanised wire?
Black annealed wire is softened and lightly oiled. It is used indoors and for temporary bundles cut open after transport. Galvanised wire offers more corrosion protection outdoors. Hot-dip galvanising generally deposits more zinc than electro-galvanising. The suitable finish depends on exposure and required life.
Which diameter should I specify?
About 1.0 to 1.6 mm is common for reinforcement and mesh. Bundling bar, tube and profile often uses 1.6 to 2.5 mm or heavier. Above approximately 2 mm, twisting by hand becomes more difficult and tools may be needed. State what you are tying and how.
Do you supply pre-cut loop ties as well as coils?
Yes. Pre-cut ties are available with a single or double loop for hooking and twisting. They can save time in repetitive work but cost more per tie than wire from a coil. State length, diameter and finish, together with the quantity per box.
What data do you need for a quotation?
Include diameter, temper and finish. State the coil weight, spool format or cut length. Describe what is being tied and the environment where the tie will remain. Add the quantity per call-off and the make and model of any tying tool. Availability and lead time are confirmed at quotation.
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