Choosing the Right binding Wire: Black Annealed Wire VS Galvanized Iron Wire for Construction Binding


Published on:

2024-02-01

Black annealed iron wire and galvanized iron wire are widely used as binding wire for construction and other tasks.The black annealed iron wire is more flexible for daily tying.The galvanized iron wire provides strength and durability when used as rebar tie wire for construction projects.Both black annealed iron wire and galvanized iron wire offer anti-rust and corrosion protection, allowing you to choose the appropriate binding wire based on the needs of your construction project.

Choosing the Right binding Wire: Black Annealed Wire VS Galvanized Iron Wire for Construction Binding


I. Introduction

A. History of construction iron binding wire

B. Importance of choosing the right wire for construction binding

II. Black Annealed Wire

A. Definition and characteristics

B. Advantages for construction binding

III. Galvanized Iron Wire

A. Definition and characteristics

B. Advantages for construction binding

IV. Comparison between Black Annealed Wire and Galvanized Iron Wire

V. Conclusion


►Bundling wire is a type of binding wire widely used in daily life. People usually use tying wire when packaging or recycling products, and the most common application for rebar tie wire is in construction projects.

In construction projects, there are two types of binding wire that be widely used: black annealed wire and galvanized iron wire. The selection of the right building bundling wire is important for construction tasks. Are you aware of how to choose the fitting tie wire? SUNSHINE Group will walk you through the features and differences of these two kinds of binding wires, enabling you to choose the suitable rebar tie wire for your construction project.

I. Introduction

A. History of construction iron binding wire      

As early as the eighteenth century, farmers were already using iron wire to bind hay and transport or recycle wood by binding them with tie wire.

As the Industrial Age progressed, iron binding wire, often paired with automatic rebar tying machines, became the widely used tie wire for construction and daily bundling applications.

B. Importance of choosing the right wire for construction binding      

►What is binding wire in construction?

There are usually two types of tie wire are widely used as construction rebar tie wire:black annealed wire and galvanized iron wire.Choosing the right rebar tie wire can make construction projects more efficient and safer, allowing you to achieve more with less effort.

Next, SUNSHINE Group will provide you with a detailed introduction to the advantages and differences between black annealed binding wire and galvanized iron tie wire that will make it easier for you to find the bundling wire that suits your needs.


II. Black Annealed Wire

A. Definition and characteristics    

►Manufacturing process of black annealed wire    

First, low carbon steel wire(iron wire Q195/Q235) is drawn through dies to reduce its diameter and increase its tensile strength. Then, the iron wire is annealed in an oven at a specific temperature for a certain duration to relieve internal stresses and soften it. After cooling, the iron wire is cleaned using acid or other chemical treatments to remove any surface impurities. Finally, the cleaned iron wire is coated with a thin layer of rust-inhibiting oil.

The black annealed wire retains its strength with a good degree of flexibility, making the black annealed iron wire an ideal choice for use as construction bundling wire.

►Appearance and color         

Black annealed iron wire features the smooth surface and black appearance due to being cleaned in the acidic solution and coated with an anti-rust oil. This characteristic makes the black annealed iron wire safe for use as construction tie wire, reducing the risk of injury to workers.

►For auto binding wire machine     

The rust-inhibiting oil on the surface of the black annealed iron wire not only provides anti-corrosion properties but also reduces friction, making the black annealed iron wire suitable for use with automatic tie wire machines,and enhances the efficiency of construction projects.

Below are specification for the black annealed wire including black annealed iron wire sizes(wire diameter )

Wire Material

low carbon wire SAE 1008,Q195,Q235

Wire Types

black annealed wire,black annealed twisted wire(1*6/1*7)

Wire Diameter

BWG8-BWG24

Surface Treatment

plain oil painted (against rust and corrosion)

Forms Available

coil wire,U type wire,straight cut wire,etc

Black Annealed Iron Wire Gauge

SWG(mm)

BWG(mm)

Metric(mm)

8

4.05

4.19

4.00

9

3.66

3.76

4.00

10

3.25

3.40

3.50

11

2.95

3.05

3.00

12

2.64

2.77

2.80

13

2.34

2.41

2.50

14

2.03

2.11

2.50

15

1.83

1.83

1.80

16

1.63

1.65

1.65

17

1.42

1.47

1.40

18

1.22

1.25

1.20

19

1.02

1.07

1.00

20

0.91

0.84

0.90

21

0.81

0.81

0.80

22

0.71

0.71

0.70

B. Advantages for construction binding   

Flexibility and Softness: Black annealed iron wire is known for its flexibility and softness, making the black annealed iron wire easy to bend. This characteristic is beneficial in construction applications where the black annealed iron wire needs to be shaped or tied easily.

Improved Ductility: Annealing enhances the ductility of the black annealed iron wire, meaning the black annealed iron wire can undergo deformation without breaking. This is siutable for applications such as binding, twisting.

Corrosion Resistance: The black coating on the black annealed iron wire provides a level of corrosion resistance, protecting the iron underneath. This makes black annealed iron wire suitable for use in various environments, including outdoor applications.

Ease of Use: The soft and flexible nature of black annealed iron wire makes it easy to handle and work with. The black annealed iron wire is convenient choice for tasks such as bundling, binding, and construction rebar tie work.


III. Galvanized Iron Wire

A. Definition and characteristics     

►Galvanization process of galvanized iron wire    

Galvanized iron wire is produced through the hot-dip galvanization process or electro-galvanization process that enhances corrosion resistance. The raw material--high quality Q195/Q235 iron wire is first cleaned to remove any dirt or grease. The iron wire is then immersed into a bath of molten zinc. Here, the iron wire's surface undergoes a chemical reaction with the zinc, resulting in the zinc coating that protects against rust. Afterwards, the excess zinc is wiped off, leaving a consistent layer of zinc all around the iron wire. The galvanized iron wire is widely used as binding wire in construction tasks.

►Zinc coating and its impact on durability    

Galvanized iron wire offers excellent resistance to rust and corrosion. The galvanized layer on the surface of the galvanized iron wire provides a tight protective layer for the inner iron wire, protacting the inner iron wire from the wind, rain, and high temperatures.Hot-dip galvanized iron wire features a thicker zinc coating, resulting in enhanced corrosion resistance. This makes the galvanized iron wire easily used as outdoor construction bundling wire. This enhances the durability of the galvanized iron wire and extends the galvanized iron's lifespan.

►Appearance and color

Galvanized iron wire typically presents in a silver color due to the zinc coating. Moreover, Electro-galvanized iron wire provides a brighter appearance compared to hot-dipped galvanized iron wire.This characteristic makes galvanized iron wire suitable for use as construction tie wires in outdoor tasks.

Below are specification for the galvanized iron wire includinggalvanized iron wire sizes(wire diameter)

Model Number

galvanized low carbon steel wire
Material high quality iron wire Q195 Q235
Surface Treatment Hot-dipped Galvanized/Electro-Galvanized
Processing Service Welding, Bending, Cutting
Wire Diameter 0.56mm-5mm
Surface Galvanised Zinc
Coil weight 5kg --- 500 Kg

Galvanized Iron Wire Gauge

SWG(mm)

BWG(mm)

Metric(mm)

8

4.05

4.19

4.00

9

3.66

3.76

4.00

10

3.25

3.40

3.50

11

2.95

3.05

3.00

12

2.64

2.77

2.80

13

2.34

2.41

2.50

14

2.03

2.11

2.50

15

1.83

1.83

1.80

16

1.63

1.65

1.65

17

1.42

1.47

1.40

18

1.22

1.25

1.20

19

1.02

1.07

1.00

20

0.91

0.84

0.90

21

0.81

0.81

0.80

22

0.71

0.71

0.70

B. Advantages for construction binding

Corrosion Resistance: The primary advantage of galvanized iron wire is its excellent resistance to corrosion. The galvanized iron wire is coated with a layer of zinc, which preventing rust and corrosion.

Durability: Galvanized iron wire is known for its durability and long lifespan. The zinc coating provides a protective layer that enhances the wire's resistance to wear and tear, making it suitable for outdoor projects as binding wire.

Strength and Sturdiness: Galvanized iron wire maintains its strength even after the galvanization process. This makes the galvanized iron wire widely used as rebar tie wire for construction projects.

Ease of Handling: Galvanized iron wire is generally easy to handle due to its strength and flexibility. This makes the galvanized iron wire suitable for daily binding tasks.

Aesthetic Appeal: In addition to its other benefits, the shiny and uniform appearance of galvanized iron wire adds an aesthetic appeal when used as the construction rebar tie wire.


IV. Comparison between Black Annealed Wire and Galvanized Iron Wire     

1.Corrosion resistance:Black annealed iron wire and galvanized iron wire both possess certain rust and corrosion-resistant properties. However, the galvanization process offers more strong rust prevention compared to black annealed iron wire, making galvanized iron wire more corrosion-resistant and more suitable for outdoor use when used as construction binding wire.

2.Flexibility:Because the black annealed iron wire undergoes high-temperature annealing treatment, the black annealed iron wire becomes more soft and flexible compared to galvanized iron wire. It makes black annealed iron wire better suited for bending. In applications where high flexibility is required, black annealed iron wire is a more appropriate choice for use as the bundling wire.

3.Strength and durability:Compared to black annealed iron wire, galvanized iron wire offers superior strength and is more suitable for heavy-duty construction projects. Its durability makes galvanized iron wire an excellent choice for use as construction tying wire.

4.Cost and service life:The initial cost of galvanized iron wire is higher than black annealed iron wire, which is more economical. However, galvanized iron wire has a longer lifespan, making the galvanized iron wire a cost-effective choice in the long run.


V. Conclusion

Outdoor construction projects are susceptible to damage from rain and high temperatures, but galvanized iron wire offers strong corrosion resistance, making the galvanized iron wire  suitable as binding wire for outdoor construction applications. Furthermore, the strength and durability of galvanized iron wire make it ideally suited for use as rebar tie wire in heavy-duty projects.

Black annealed wire is flexible due to the high-temperature annealing process it undergoes, and the black annealed iron wire is also cost-effective. Black annealed iron wire is well-suited for temporary bundling tasks or projects that require higher flexibility, such as bundling hay or plastics.

Choosing the right tie wire can enhance efficiency and safety in your construction project. If you have any further questions, please contact SUNSHINE Group .

 

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