Taiyuan Yaoqiang Iron Co., Ltd. provides pure electromagnetic iron with a purity above 99.5%. The industrial pure iron used as a soft magnetic material is called electromagnetic pure iron, also called pure iron or electrical steel.
Question: What is a soft magnetic material?
Soft magnetic material refers to a magnetic material having a low coercive force and a high magnetic permeability. Soft magnetic materials are easy to magnetize and are easy to demagnetize. They are widely used in electrical equipment and electronic equipment. Typical soft magnetic materials can achieve maximum magnetization with a minimal external magnetic field. The most widely used soft magnetic materials are ferrosilicon (silicon steel) and various soft ferrites.
Question: What is industrial pure iron?
Industrial pure iron is a kind of steel, its chemical composition is mainly iron, content is 99.50%~99.90%, carbon content is less than 0.04%, the less the other elements, the better. Because it is not actually pure iron (purity 99.90% ~ 99.95%), so this kind of steel that is close to pure iron is industrial pure iron.
Industrial pure iron is soft, tough, and has good electromagnetic properties. Commonly there are two uses, one is as a deep-drawing material, can be stamped into a very complex shape; the other is as electromagnetic material, electromagnetic iron. Industrial pure iron has the largest amount of electromagnetic pure iron, accounting for about 80%.
Electromagnetic iron has high magnetic and low magnetic properties. Widely used in electronic electrician, electrical components, magnetic materials, amorphous products, relays, sensors, automotive brakes, textile machinery, electromagnetic valve and other products. Its melting point is higher than that of iron, it is harder to rust than iron in humid air, and it can be passivated in cold concentrated sulfuric acid.
Question: The chemical composition of electromagnetic iron?
In terms of electromagnetic performance alone, the higher the purity, the better the electromagnetic performance. However, the preparation of high-purity iron is complex and costly. The solution for electromagnetic pure iron is that aluminum silicon is often added in the smelting to weaken the adverse effects of other impurities on the magnetic properties.
Electrochemical pure iron chemical composition reference values ​​are shown in the following table.
Grade C Si Mn P S
DT4, DT4A,
DT4E, DT4C ≤ 0.010 ≤ 0.10 ≤ 0.25 ≤ 0.015 ≤ 0.010
 Al Ti Cr Ni Cu
 0.20~0.80 ≤0.02 ≤0.10 ≤0.05 ≤0.05
Remarks: The grades consist of the sequence of Pinyin “DTâ€, sequence number and magnetic grade symbol (A is advanced, E is special grade, and C is super) of “Electricityâ€. There are DT3 and DT3A grades in the old national standard of 86th edition. The new version of GB/T 6983-2008 has been cancelled and the above data is from the new edition.
Question: How to determine the grade of electromagnetic pure iron?
Unlike other steels, the chemical composition of electromagnetic iron is only a reference and not an acceptance condition. The magnetic inspection of electromagnetic pure iron products usually only detects the coercive force (Hc), and determines the grade based on the coercive force value.
Magnetic examination of electromagnetic pure iron (GB/T 6983-2008)
Magnetic Grade Normal Grade Premium Super Grade  DT4 DT4A DT4E DT4C
Coercivity
Hc/(A/m) ≤ 96.0 ≤ 72.0 ≤ 48.0 ≤ 32.0
Coercive force increment ΔHc/(A/m) ≤ 9.6 ≤ 7.2 ≤ 4.8 ≤ 4.0
The maximum permeability μm/(H/m) ≥0.0075 ≥0.0088 ≥0.0113 ≥0.0151
Magnetic induction
B/T B200 ≥1.20
 B300 ≥1.30
 B500 ≥1.40
 B1000 ≥1.50
 B2500 ≥1.62
 B5000 ≥1.71
 B10000 ≥1.80
Note: B200... B10000 refers to the magnetic induction when the magnetic field strength is 200A/m...10000A/m. Taiyuan Yaoqiang Iron Co., Ltd. Pure Iron Sales Full Name: Taiyuan Yaoqiang Pure Iron Co., Ltd. Contact: Manager Wang Address: 51 Beihewan Road, Xinghualing District, Taiyuan
Question: What is a soft magnetic material?
Soft magnetic material refers to a magnetic material having a low coercive force and a high magnetic permeability. Soft magnetic materials are easy to magnetize and are easy to demagnetize. They are widely used in electrical equipment and electronic equipment. Typical soft magnetic materials can achieve maximum magnetization with a minimal external magnetic field. The most widely used soft magnetic materials are ferrosilicon (silicon steel) and various soft ferrites.
Question: What is industrial pure iron?
Industrial pure iron is a kind of steel, its chemical composition is mainly iron, content is 99.50%~99.90%, carbon content is less than 0.04%, the less the other elements, the better. Because it is not actually pure iron (purity 99.90% ~ 99.95%), so this kind of steel that is close to pure iron is industrial pure iron.
Industrial pure iron is soft, tough, and has good electromagnetic properties. Commonly there are two uses, one is as a deep-drawing material, can be stamped into a very complex shape; the other is as electromagnetic material, electromagnetic iron. Industrial pure iron has the largest amount of electromagnetic pure iron, accounting for about 80%.
Electromagnetic iron has high magnetic and low magnetic properties. Widely used in electronic electrician, electrical components, magnetic materials, amorphous products, relays, sensors, automotive brakes, textile machinery, electromagnetic valve and other products. Its melting point is higher than that of iron, it is harder to rust than iron in humid air, and it can be passivated in cold concentrated sulfuric acid.
Question: The chemical composition of electromagnetic iron?
In terms of electromagnetic performance alone, the higher the purity, the better the electromagnetic performance. However, the preparation of high-purity iron is complex and costly. The solution for electromagnetic pure iron is that aluminum silicon is often added in the smelting to weaken the adverse effects of other impurities on the magnetic properties.
Electrochemical pure iron chemical composition reference values ​​are shown in the following table.
Grade C Si Mn P S
DT4, DT4A,
DT4E, DT4C ≤ 0.010 ≤ 0.10 ≤ 0.25 ≤ 0.015 ≤ 0.010
 Al Ti Cr Ni Cu
 0.20~0.80 ≤0.02 ≤0.10 ≤0.05 ≤0.05
Remarks: The grades consist of the sequence of Pinyin “DTâ€, sequence number and magnetic grade symbol (A is advanced, E is special grade, and C is super) of “Electricityâ€. There are DT3 and DT3A grades in the old national standard of 86th edition. The new version of GB/T 6983-2008 has been cancelled and the above data is from the new edition.
Question: How to determine the grade of electromagnetic pure iron?
Unlike other steels, the chemical composition of electromagnetic iron is only a reference and not an acceptance condition. The magnetic inspection of electromagnetic pure iron products usually only detects the coercive force (Hc), and determines the grade based on the coercive force value.
Magnetic examination of electromagnetic pure iron (GB/T 6983-2008)
Magnetic Grade Normal Grade Premium Super Grade  DT4 DT4A DT4E DT4C
Coercivity
Hc/(A/m) ≤ 96.0 ≤ 72.0 ≤ 48.0 ≤ 32.0
Coercive force increment ΔHc/(A/m) ≤ 9.6 ≤ 7.2 ≤ 4.8 ≤ 4.0
The maximum permeability μm/(H/m) ≥0.0075 ≥0.0088 ≥0.0113 ≥0.0151
Magnetic induction
B/T B200 ≥1.20
 B300 ≥1.30
 B500 ≥1.40
 B1000 ≥1.50
 B2500 ≥1.62
 B5000 ≥1.71
 B10000 ≥1.80
Note: B200... B10000 refers to the magnetic induction when the magnetic field strength is 200A/m...10000A/m. Taiyuan Yaoqiang Iron Co., Ltd. Pure Iron Sales Full Name: Taiyuan Yaoqiang Pure Iron Co., Ltd. Contact: Manager Wang Address: 51 Beihewan Road, Xinghualing District, Taiyuan
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