COLD FORMING MATERIALS

SUJ4 Cold heading steel wire

MATERIALSENGINEERINGCREATION GROUP

Products / JIS Standard / JIS G4805

SUJ4 Cold heading steel wire

Diameter of wire: 0.40-46mm

Tensile Strength: Please refer to the technical information page

Product Detail Technical Information Inspection Packaging

Shanghai Creation GroupIs China. It is a benchmark company that has 20 years of experience in an enterprise that focuses on cold heading quality steel wires in the entire management team. We have a good relationship with many tier one suppliers in the automotive industry and all the wire wire is supplied by brand steel mills. All orders are 100% traceable.

Technical delivery conditions

Surface Quality

- : Continuous, smooth

- : No stitches, no overlap, potholes, scratches, no extension marks

- : No rust

Applied Industry

- : Automotive Industry

- : Construction

- : Machinery & Equipment Industry

- : Other Industries

Case Study

Products & Service

Wire rod

Pickling and phosphating

Cold drawing

Spheroidizing annealing

Inspection

Finished products

1. Chemical composition

Table 1 -- Chemical Components, Units %

Steel grade	C	Si	Mn	P	S	Cr	Mo	Ni	Cu a）
SUJ2	0.95~1.10	0.15~0.35	≤0.50	≤0.025	≤0.025	1.30~1.60	≤0.08	≤0.25	≤0.25
SUJ3	0.95~1.10	0.40~0.70	0.90~1.15	≤0.025	≤0.025	0.90~1.20	≤0.08	≤0.25	≤0.25
SUJ4	0.95~1.10	0.15~0.35	≤0.50	≤0.025	≤0.025	1.30~1.60	0.10~0.25	≤0.25	≤0.25
SUJ5	0.95~1.10	0.40~0.70	0.90~1.15	≤0.025	≤0.025	0.90~1.20	0.10~0.25	≤0.25	≤0.25
この表に規定のない元素は，受渡当事者間の協定がない限り，溶鋼を仕上げる目的以外に意図的に添加してはならない。注a）線材のCuは，0.20 %以下とする。

The elements not specified in this table should not be intentionally added except for the purpose of finishing the molten steel, unless there is an agreement between the receiving parties.
Note a) The Cu of the wire is 0.20% or less.

2. Mechanical properties of the wire

A value of a mechanical nature may be agreed between the receiving parties.

3. Dimensions tolerance

Table 4-Dimensions tolerance (wire)

Diameter	Diameter tolerance	Out-of-roundness
<15	±0.30	<0.40
15<d≤25	±0.40	<0.50
25<d≤35	±0.40	<0.50
35<d≤40	±0.40	<0.50

The tolerance for dimensions with a diameter of more than 40 mm depends on the agreement between the receiving parties.

4. Tolerance limit of total coal-decalting depth

Table 9-Tolerant Limits of total coal-decalination depth (Cold drawn steel)

Cold-drawn round steel bar		Cold-drawn wire
Diameter	Total decarburization depth from surface	Diameter	Total decarburization depth from surface
<15	<0.20	≤7	<0.05
15<d≤25	<0.25	7<d≤15	<0.08
25<d≤35	<0.30	15<d≤20	<0.10

The allowable limits for the dimensions of the cold drawn round steel with a diameter of more than 35 mm and the diameter of the cold drawn line with a diameter of more than 20 mm are in accordance with the agreement between the receiving parties.

5. Hardness

Table 10-Spherical Scinding Hardness (Rolled Steel for Cutting)

Steel grade	Hardness
Steel grade	HBW	HRB	HV
SUJ2,SUJ4	<201	<94	<218
SUJ3,SUJ5	<207	<95	<223

The heat-rolled steel for cutting that has been subjected to spherical sintered was tested at 14.3, and its hardness was determined by either Brinell hardness (HBW), Rockwell hardness (HRBW) or Vickers hardness (HV) in Table 10. However, the Vickers hardness (HV) may be applied only when the diameter is 17 mm or less. In addition, the hardness of the cold drawn steel and the low-temperature burnt hardness of the forged steel are in accordance with the agreement between the receiving parties.

Product Detail Technical Information Inspection Packaging