The Comprehensive Guide:Black Annealed Wire


Published on:

2024-01-25

The black annealed wire is made of high quality Q195/Q235 iron wire,and treated through annealing and coated with rust-inhibiting oil.Due to its softness and resistance to corrosion, black annealed iron wire is commonly used as binding wire for construction and agriculture projects.

The Comprehensive Guide:Black Annealed Wire

 


 

1. Introduction
Definition of Black Annealed Wire

2. Specification of black annealed wire

3. Types of black annealed iron wire   

4. Features of black annealed wire

5. Application of black annealed wire

6. Manufacturing Process

7. Conclusion

 


 

►Black annealed iron wire is a type of iron wire that widely used and typically black in color. Black annealed iron wire is usually used as construction tie wire or agricultural binding wire. Below, SUNSHINE Group  will provide you with a detailed introduction to the feature and application of black annealed iron wire.

1. Introduction
 

Definition of Black Annealed Wire

►What is black annealed wire? What is black annealed wire made of?

Black annealed iron wire is typically made from high quality low-carbon steel(Q195/Q235).And undergoes the drawing and annealing process, black annealed iron wire can be more ductile and flexible

The term "black" in black annealed iron wire refers to the wire's appearance after annealing. The wire is coated with a black oxide layer, providing a protective coating against corrosion. 

 


 

2. Specification of black annealed wire 

The size of black annealed iron wire generally refers to the wire's diameter, which is typically expressed in BWG (Birmingham Wire Gauge),from BWG gauge 8 to BWG gauge 24.

The black annealed iron wire can be coiled or cut into u type black annealed iron wire.

Then the black annealed iron wire will be packed into boxes or "bind with wire,plastic film inside and hessian cloth /woven bag outside".

Here are the specification of black annealed iron wire.

Black Annealed Wire Brand

SUNSHINE

Wire Material

low carbon steel 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)

 

big coil and small coil soft black iron annealed wire

 

 

►Sizes of black annealed iron wire

Wire Gauge

SWG(mm)

BWG in mm

MM

8#

4.06

4.19

4.00

9#

3.66

3.76

-

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

-

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

0.89

0.90

21#

0.81

0.813

0.80

22#

0.71

0.711

0.70

 


 

3. Types of black annealed iron wire     

There are two types of black annealed binding iron wire,one is standard black annealed wire,the other is twisted black annealed iron wire.

The double twisted black annealed baling iron wire is usually woven from six or seven strands.Please refer to the images below, which show the twisted black annealed iron rebar tie wire.

 


 

4. Features of black annealed wire

A common concern people often have is: dose black annealed wire rust? 

Black annealed iron wire typically has a layer of rust-inhibiting oil applied to the surface, which helps protect the black annealed iron wire from corrosion and rusting.

In addition, black annealed iron wire also offers several other advantages that make it widely used as bundling wire in the construction and agricultural projects.

Durability: The annealing process makes the wire more ductile and less likely to break under tension, which is especially important for uses like tying and binding in construction or agriculture.

Flexibility: Black annealed iron wire is more flexible than non-annealed wire, allowing it to be easily bent and shaped without breaking or cracking.

Strength: Despite its increased flexibility, black annealed iron wire maintains a high tensile strength, ensuring the black annealed iron wire can handle the weight and strain of the construction projects

Longevity: The combination of ductility, strength, and corrosion resistance means that black annealed iron wire can last longer in outdoor environments and under stress.

Ease of Use: The black annealed iron wire's flexibility and strength make it easy to work with, whether you're manually tying bundles or using machinery for larger-scale operations.

Environmentally Friendly: Since black annealed iron wire is made of iron, which is a naturally occurring and abundant resource, black annealed wire can be considered a more environmentally friendly option compared to some other synthetic materials.

 


 

5. Application of black annealed wire

It is well known that black annealed iron wire is often used as binding wire in construction and agriculture. Below, SUNSHINE Group will provide you with a detailed introduction to the uses of black annealed iron wire.

Construction Ties: As rebar tie wire,the black annealed iron wire is used for securing bundles of rebar, lumber, or other building materials during transportation and construction.

Agricultural Baling: As baling wire,the black annealed iron wire can bind hay, straw, or other crops into bales for storage and transport.

Gardening: As tying wire,black annealed iron wire can support plant growth such as grapevines by tying climbing plants to trellises or supports.

Warehousing and Packaging: Black annealed iron wire also can secure loads on pallets for storage or transport.

 


 

6. Manufacturing Process    

Black annealed iron wire is annealed to achieve the soft and strong performance, which allows the black annealed iron wire to be widely used as tie wire in the construction and agricultural fields. 

The manufacturing process of black annealed iron wire involves first drawing the low carbon steel wire through a series of dies to achieve the desired diameter. After this initial drawing, the low carbon steel wire is annealed, which involves heating it to a high temperature and then slowly cooling it.

 


7. Conclusion         

The black annealed iron wire is formed by taking high-quality q195/q235 iron wire, heating the iron wire to a high temperature during the annealing process, and then cooling it down before applying a layer of black rust-inhibiting oil on the surface. Due to the annealing process, the black annealed iron wire becomes soft, flexible, and possesses a certain level of strength.Thanks to the rust-inhibiting oil on the surface of the black annealed iron wire, it has anti-corrosion properties.Therefore, black annealed iron wire can be widely used as binding wire in the construction industry and agriculture projects.

SUNSHINE Group can provide high quality black annealed iron wire of various sizes,and if you do not kwon how to choose suitable binding wire,please contact us,SUNSHINE Group has many kinds of iron binding wires,such as PVC coated wire,galvanized iron wire,etc.

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