How to Choose Tie Wire Diameter? A 1.20 - 1.60 mm Guide
26 August 20264 min read
Tie wire diameter is chosen according to rebar thickness and job type. The most common diameter is 1.50 mm. A practical guide to tie wire diameter selection and the difference between thin and thick wire.
Tie wire diameter is chosen according to the thickness of the rebar and the intensity of the work. The most commonly used diameter is 1.50 mm. Thin wire (1.20 mm) is more economical and sufficient for light work; thick wire (1.60 mm and above) provides a stronger tie but is heavier per metre.
The right diameter choice directly affects both tie strength and cost. This guide explains which diameter to use for which job.
What determines tie wire diameter?
Three factors are decisive in diameter selection:
- Rebar thickness: Thin rebar (Ø8-Ø10) is tied with thin tie wire, thick rebar (Ø16 and above) with thicker tie wire.
- Tie strength: Thicker wire holds a tighter, stronger tie. This matters at heavy rebar or load-bearing points.
- Cost: Thin wire is lighter per metre, so you make more ties with the same weight. It is economical for light work.
Tie wire diameter - usage table
| Diameter (mm) | Use | Metres per kg |
|---|---|---|
| 1.20 | Light rebar, mesh tying, economical work | 113 m |
| 1.40 | Light-medium rebar | 83 m |
| 1.50 | Standard reinforced concrete (most common) | 72 m |
| 1.60 | Medium-heavy rebar | 63 m |
| 2.00 | Heavy rebar, points needing a strong tie | 41 m |
Metre values calculated with a steel density of 7.85 g/cm³.
Why is 1.50 mm the most common?
1.50 mm is the standard choice on most sites in Türkiye because it balances two needs: thin enough to bend comfortably by hand, yet durable enough to hold the tie safely. Very thin wire (1.00-1.20 mm) can break while tying; very thick wire (2.00 mm) is harder to bend by hand and more expensive.
If your job is standard reinforced-concrete rebar tying, 1.50 mm is the safe choice unless a special situation requires otherwise.
Which is more economical, thin or thick wire?
There is an important point here. Thin wire is lighter per metre; that is, with 1 kg of thin wire you make more metres and therefore more ties. So thin wire is more economical for light work.
However, if a thin tie is weak and comes undone, the saving becomes meaningless. The right approach is to choose the thinnest diameter the job requires. Wire thicker than needed wastes money; wire thinner than needed is a safety risk.
To calculate the total amount of tie wire you need, see our how much tie wire per tonne of rebar article and our calculator.
Wire quality matters as much as diameter
The structure of the wire is as important as its diameter. Tie wire must be annealed (softened). Un-annealed hard wire, whatever its diameter, snaps when bent and is unsuitable for tying. A precise diameter tolerance (-0.05 / +0.05 mm) also keeps the wire consistent and at the expected strength.
Frequently asked questions
What diameter should tie wire be?
The standard in Türkiye is 1.50 mm. 1.20-1.40 mm is used for light rebar and mesh tying, and 1.60-2.00 mm for heavy rebar. Diameter is set according to the thickness of the rebar to be tied.
What is the difference between 1.20 mm and 1.50 mm tie wire?
1.20 mm is thinner and more economical (113 metres per kg), sufficient for light work. 1.50 mm holds a stronger tie (72 metres per kg) and is preferred for standard reinforced concrete.
Does thin tie wire give more metres?
Yes. Because thin wire is lighter per metre, you get more metres from the same weight. 1.20 mm wire gives 113 metres per kg, and 1.50 mm gives 72 metres.
Which diameter is used for heavy rebar?
1.60-2.00 mm tie wire is preferred for thick rebar of Ø16 and above. Thick wire provides a tighter, safer tie.
Does tie wire diameter affect strength?
Yes, thicker wire holds a stronger tie. However, the wire being annealed and produced at a homogeneous strength is just as important as diameter.
AFA Çelik rebar tie wire
AFA Çelik produces rebar tie wire at its facility in Sarıçam, Adana, Türkiye. With a 1.00-2.00 mm diameter range, SAE 1006 grade raw material, 300-450 MPa strength and a precise -0.05 / +0.05 mm tolerance, our wire is offered with pallet, big bag and mastercoil options.
For the diameter suited to your job and price information, request a quote or contact us.
