COLD FORMING MATERIALS

DT4C DT4 DT4E DT4A cold heading wire

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product Center / DT4C DT4 DT4E DT4A cold heading wire

DT4C DT4 DT4E DT4A cold heading wire

wire diameter: 0.40-46mm

tensile strength: Please refer to the technical data page

Shanghai Creation Group Co.,Ltd. is a benchmark enterprise for cold heading wire rod in China. The production management team has an average of more than 15 years of industry experience. Most of the cooperative customers are first-level suppliers to global automobile companies, and all raw materials come from well-known domestic steel mills. All production orders are 100% traceable.

Specification

Specification

-:Wire surface is continuous and smooth

-:No joints, overlaps, pits, scratches and pull-out marks

-:no rusting

Specification

-:automotive industry

-:the building materials industry

-:machinery and equipment industry

-:other industries

Case Study

Products & Service

Wire rod

Pickling and phosphating

Cold drawing

Spheroidizing annealing

check

finished product

1. chemical composition

Table 1-Reference values for chemical composition of electromagnetic pure iron (melting analysis)

Steel grade	Chemical composition (mass fraction) /%
	C	Si	Mn	P	S	Al	Ti	Cr	Ni	Cu
DT4	<0.010	<0. 10	<0.25	<0.015	<0.010	0.20 〜0.80	<0.02	<0. 10	<0. 05	<0. 05
DT4A
DT4E
DT4C

2. mechanical properties

Table 5 -Mechanical properties and surface hardness

Mechanical properties		Surface hardness
Tensile strength	Elongation after fracture A/%	Vickers hardness HV5
≥265	≥25	≤195

2.1 According to the requirements of the demander, the mechanical properties of forged round bars, hot rolled round bars and hot rolled plates can be tested, and the results shall comply with the provisions in Table 5.
2.2 The cold rolled electromagnetic pure iron sheet (strip) delivered in a softened annealed state shall be subjected to surface Vickers hardness test. Measure 3 points for each specimen, and take the average value as the measurement result of a single specimen. The hardness value shall be 85HV5 ~ 140HV5.

3. electromagnetic properties

Table 2 Electromagnetic properties

Magnetic grade	Steel grade	Coercive force Hc/(A/m) ≤	Increase in coercive force after aging △Hc/(A/m) ≤	Maximum permeability µ_m	Magnetic flux density B/T
					B₂₀₀	B₃₀₀	B₅₀₀	B₁₀₀₀	B₂₅₀₀	B₅₀₀₀	B₁₀₀₀₀
普通级	DT4	96.0	9.6	0.0075	≥1.20	≥1. 30	≥1.40	≥1. 50	≥1.62	≥1. 71	≥1.80
高级	DT4A	72.0	7.2	0.0088
特级	DT4E	48.0	4.8	0.0113
超级	DT4C	32.0	4.0	0.0151
注：B_{200 ，}B_300，B500 ......B10000分别表示磁场强度为 200 A/m、300 A/m、500 A/m......10 000 A/m 时的磁感应强度。

Note: B200, B300, B500... B10000 indicates magnetic field strengths of 200 A/m, 300 A/m, 500 A/m... Magnetic induction intensity at 10 000 A/m.

4. surface quality

Table 3 Provisions on corresponding standards for surface quality of electromagnetic pure iron products.

The surface quality of electromagnetic pure iron products shall comply with the provisions of the corresponding standards in Table 3.

Product type	Standard	Product type	Standard
电磁纯铁连铸方坯和矩形坯	YB/T 2011	电磁纯铁锻制圆棒	GB/T 699
电磁纯铁连铸板坯	YB/T 2012	电磁纯铁热轧板（带）	GB/T 711
电磁纯铁初轧坯	YB/T 004	电磁纯铁冷拉圆棒	GB/T 3078
电磁纯铁热轧圆棒	GB/T 699	电磁纯铁冷轧薄板（带）	GB/T 13237
电磁纯铁热轧盘条	GB/T 701