S235JR Low Carbon Steel Black Wire Annealed Tying Wire
1. Product Introduction
Annealed wire is made from cold-drawn low-carbon steel wire, which undergoes an annealing heat treatment. The production process involves placing the hardest, strongest cold-drawn wire into an annealing furnace, heating it to above the recrystallization temperature (usually below the Ac1 phase transition point), holding it for a period of time, and then slowly cooling it.
This process fundamentally reverses the workhardening effects of cold drawing, allowing the wire's crystal structure to recover and recrystallize, significantly reducing its hardness and strength while restoring and improving its plasticity and toughness. The resulting annealed wire is exceptionally soft and elastic, making it easy to bend and form.
Common Categories:
Black Annealed Wire: This is the most basic type of wire, exhibiting a bluish-black oxide film after annealing.
Galvanized Annealed Wire: This is black annealed wire that has been hot-dip galvanized or electroplated for rust resistance.
Common Specifications: Diameters range widely, from very fine 0.2mm to coarse 4.0mm or even thicker.
2. Characteristics
Excellent flexibility and elasticity: This is its core characteristic. It is easy to bend, twist, and weave by hand, and can partially rebound after being deformed by a certain external force.
Excellent plasticity and toughness: Its high elongation allows it to withstand repeated and extensive bending and deformation without breaking, making it safe to use.
Good formability: It is well-suited for manual operation and simple mechanical processing, such as weaving, winding, and tying.
Processing stress relief: The annealing process completely eliminates the internal stress generated during the cold drawing process, ensuring stable product performance and preventing spontaneous deformation due to stress release.
Various surface treatments:
Black wire: Low cost, with a dark oxide layer, offers some rust resistance, but not strong, and is primarily used for short-term or indoor use.
Galvanized wire: Highly corrosion-resistant, suitable for outdoor and humid environments, and has a long service life.
3. Applications
Annealed wire has a wide range of uses, encompassing industry, agriculture, construction, and everyday life.
Construction Ties: Its primary application. It is used to bundle rebar (as "tie wire") and secure the rebar framework, making it an indispensable auxiliary material in reinforced concrete construction.
Weaving and Netting: Woven into wire mesh, fencing, livestock enclosures, poultry cages, egg baskets, shopping baskets, and more. It can also be woven into screens for screening operations in the grain, mining, and metallurgical industries.
Daily Goods and Hardware: Made into hangers, handicrafts, and silk flowers. Used for product packaging and artwork.
Agriculture and Horticulture: Used to tie grapevines, flowers, and seedlings, and to secure vegetable plants.
Other Applications: Made into springs (for low-stress applications requiring flexibility). Used as armoring material for communication and fiber optic cables.
Annealed wire, through a crucial heat treatment process called annealing, achieves properties that contrast with cold-drawn wire: extreme softness and toughness. It sacrifices strength for unparalleled processing versatility, making it a preferred material for tying, weaving, and hand-forming applications. From the steel skeletons of skyscrapers to the simple clothes hanger of everyday life, annealed wire plays a vital role.
Diameter specification according to Grade (mm)
|
GRADE |
1004 |
1006 |
1008 |
1010 |
1012 |
1015 |
1018 |
|
Wire Diameter (mm) |
5.5 |
5.5 |
5.5 |
5.5 |
5.5 |
5.5 |
5.5 |
|
- |
- |
6.0 |
6.0 |
6.0 |
6.0 |
- |
|
|
- |
- |
6.5 |
- |
6.5 |
6.5 |
- |
|
|
- |
- |
8.0 |
- |
8.0 |
8.0 |
- |
|
|
- |
- |
11.0 |
- |
10.0 |
10.0 |
- |
|
|
Diameter Tolerance Maximum Ovality |
± 0.4 mm |
||||||
Weight of wire rod coils
|
Weight |
Weight (kg) |
|
Unit weight per roll |
1800 - 2200 |
|
Item |
Specification |
Diameter Tolerance |
Roundness Tolerance |
Length Tolerance |
Straightness Tolerance |
|
Hot-Rolled Carbon Steel Wire Rod |
Diameter: 5.5 mm – 16 mmMaterial Grade: SAE 1006, SAE 1008, Q195, Q235 |
±0.30 mm (5.5-10 mm)±0.40 mm (10-16 mm) |
≤ 0.60 mm (5.5-10 mm)≤ 0.80 mm (10-16 mm) |
+50 mm / -0 mm (standard coil length: 500-1200 m) |
≤ 3 mm/m (per meter of coil) |
|
|
Diameter: 16 mm – 25 mmMaterial Grade: SAE 1010, SAE 1015, Q345 |
±0.50 mm |
≤ 1.00 mm |
+80 mm / -0 mm (standard coil length: 300-800 m) |
≤ 4 mm/m (per meter of coil) |
|
Cold-Drawn Carbon Steel Wire Rod |
Diameter: 3.0 mm – 8.0 mmMaterial Grade: SAE 1008, SAE 1010, Q235 |
±0.05 mm (3.0-5.0 mm)±0.08 mm (5.0-8.0 mm) |
≤ 0.10 mm (3.0-5.0 mm)≤ 0.15 mm (5.0-8.0 mm) |
+30 mm / -0 mm (standard coil length: 800-1500 m) |
≤ 1.5 mm/m (per meter of coil) |
|
|
Diameter: 8.0 mm – 12.0 mmMaterial Grade: SAE 1015, SAE 1020, Q345 |
±0.10 mm |
≤ 0.20 mm |
+50 mm / -0 mm (standard coil length: 500-1000 m) |
≤ 2 mm/m (per meter of coil) |
|
Stainless Steel Wire Rod |
Diameter: 4.0 mm – 12.0 mmMaterial Grade: 304, 316, 321 |
±0.07 mm (4.0-8.0 mm)±0.09 mm (8.0-12.0 mm) |
≤ 0.12 mm (4.0-8.0 mm)≤ 0.18 mm (8.0-12.0 mm) |
+40 mm / -0 mm (standard coil length: 600-1200 m) |
≤ 2 mm/m (per meter of coil) |
Chemical composition range (%) for wire rod used in Malla Electrosoldada Plant
|
Element |
Grade 1008 |
Grade 1010 |
Grade 1012 |
Grade 1015 |
|
C |
0.10 máx. |
0.08 - 0.13 |
0.10 - 0.15 |
0.13 - 0.18 |
|
Mn |
0.30 - 0.50 |
0.30 - 0.60 |
||
|
Si |
0.200 máx. |
|||
|
P |
0.040 máx. |
|||
|
S |
0.050 máx. |
|||
Chemical composition range (%) for wire rod used in Trefilación Plant.
|
ELEMENT |
Grade 1004 |
Grade 1006 |
Grade 1008 |
Grade 1018 |
|
C % |
0.02 - 0.06 |
0.08 máx. |
0.10 máx. |
0.15 - 0.20 |
|
Mn % |
0.30 - 0.45 |
0.30 - 0.45 |
0.30 - 0.50 |
0.60 - 0.90 |
|
SI % |
0.20 máx. |
|||
|
P % |
0.03 máx. |
|||
|
S % |
0.03 máx. |
|||
|
Cr % |
0.20 máx. |
|||
|
Cu % |
0.18 máx. |
|||
|
Ni % |
0.20 máx. |
|||
|
Mo % |
0.040 máx. |
|||
|
N |
menor 110 ppm |
|||
Recommended Tensile Strength for Imported Wire by Grade for Wire, Malla Electrosoldada Plant.
|
GRADE ASTM 1040 |
Tensile strength |
|
1008 |
410 MPa mínimo |
|
1010 |
450MPa mínimo |
|
1012 |
460 MPa mínimo |
|
1015 |
460 MPa mínimo |
Recommended Tensile Strength for Imported Wire by Grade for Wire,Trefilación Plant.
|
GRADE |
Tensile strength (MPA) |
Yield strength (MPA) |
Elongation (%) |
|
1004 |
380 MPa Max |
275 mínimo |
25 mínimo |
|
1006 |
|||
|
1008 |
410 MPa Mín. |
275 mínimo |
25 mínimo |
|
1018 |
490 MPa Mín. |
275 mínimo |
25 mínimo |
Utilization by grade and diameter of wire rod
|
|
1004 |
1006 |
1008 |
1010 |
1012 |
1015 |
1018 |
|
5.5 |
Tie Wire (gauge 16) * Galvanized Wire (soft gauge) |
Tie Wire (gauge 16) * Galvanized Wire (soft gauge) |
Smooth rod 7/32 (6 y 9 m.) Nails ** Galvanized Wire (hard gauges) |
Cold rolled (gauge 7, 8, 9, 10, 4.54, 4.35 y 4.71) |
Cold rolled (gauge 7, 8, 9, 10, 4.54, 4.35 y 4.71) |
Cold rolled (gauge 7, 8, 9, 10, 4.54, 4.35 y 4.71) |
** Galvanized Wire (hard gauges) |
|
6 |
- |
- |
Smooth rod 1/4 (6 m.) Nails |
Cold rolled (gauge 6) |
Cold rolled (gauge 6) |
Cold rolled (gauge 6) |
- |
|
6.5 |
- |
- |
Nails |
- |
Cold rolled (gauge 6, 4.5) |
Cold rolled (Calibre 6, 4.5) |
- |
|
8 |
- |
- |
Nails |
- |
Cold rolled (gauge 3 y 2) |
Cold rolled (Calibre 3 y 2 |
- |
|
10 |
- |
- |
- |
- |
Cold rolled (gauge 1) |
Cold rolled (Calibre 1) |
- |
|
11 |
- |
- |
Smooth rod 11 mm (9 m.)) |
- |
- |
- |
- |
Katherine A. Fogg
Your email address will not be published. Required fields are marked with *
Their products are of excellent quality and they offer generous discounts. This is their third cooperation