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The inner shield steel sheet is a cold-rolled steel sheet that is used mainly for magnetic shielding. It is incorporated inside cathode-ray tubes, TV’s and PC monitors to shut out interferences caused by terrestrial magnetic fields.
Recently, inner shield steel sheet with high magnetic permeability, used in large size TV sets and PC monitors, have been heavily developed and promoted.
Superior management of flatness and thickness ensure the thinnest and the most accurate dimensions available. The thickness tolerance of rolling direction/width direction is ±01mm or less. The flatness pitch stands at 600 ~ 1,000mm with a tolerance of 3mm or less.
– electrical home appliance apparatuses
– Very thin thickness : 0.15mm
– Excellent flatness and thickness tolerance
| Thickness(mm) | Flatness(mm) | |
|---|---|---|
|
Rolling Direction |
Crosswise
|
|
|
±0.01 |
±0.01 |
max.3
|
– Very thin thickness : 0.15mm
– Excellent flatness and thickness tolerance
| Class | Mechanical Properties | Magnetic Properties | ||
|---|---|---|---|---|
|
|
T.S(kg/mm) |
EL |
Permeablilty μ(0.35) |
Coercive Force(Oe)
|
|
Ordinary |
28≤ |
≥30 |
≥300 |
≤2.5
|
|
Medium permeability |
25≤ |
≥20 |
≥500 |
≤1.8
|
|
High permeability |
40≤ |
≥10 |
≥750 |
≤1.25
|
| Classification | Thickness(mm) | Width |
|---|---|---|
|
Commercial Quality |
0.15 |
~1,140
|
|
High Permeable Quality |
0.13 |
~1,040 |
