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1. Product Description
Magnetic amplifiers, choke coils, rectifier coils and computer components .
2. Product Superiority
Mainly reflected in the quality of stability and product professionalism. Our cooperative production base has produced China's first batch of precision alloy product.
3. Chemical Component
The chemical composition shall comply with table 1.
Table 1 Chemical Component
Grade of steel |
Element Content (%) |
|||||||||
C |
Mn |
Si |
P |
S |
Ni |
Cu |
Fe |
- |
- |
|
1J51 |
≤0.03 |
0.30~0.60 |
0.15~0.30 |
≤0.020 |
≤0.020 |
49.0~50.5 |
≤0.20 |
Balance |
- |
- |
4. Size And Allowable Deviation
The size and allowable deviation of cold rolled strip shall be in accordance with table 2 and table 3.
Table 2 Allowable deviation of cold rolled strip thickness
Unit: mm
Nominal thickness |
Thickness and allowable deviation |
Nominal width |
Nominal length, no less than |
≥0.05~0.09 |
-0.01, 0 |
10~200 |
30000 |
＞0.9~0.15 |
-0.02, 0 |
10~200 |
20000 |
＞0.15~0.25 |
-0.03, 0 |
10~200 |
6000 |
＞0.25~0.40 |
-0.04, 0 |
10~200 |
3000 |
＞0.40~0.70 |
-0.05, 0 |
10~200 |
3000 |
＞0.70~0.95 |
-0.07, 0 |
10~200 |
1000 |
＞0.95~1.35 |
-0.08, 0 |
10~200 |
1000 |
＞1.35~1.75 |
-0.11, 0 |
10~200 |
1000 |
＞1.75~2.30 |
-0.13, 0 |
10~200 |
1000 |
＞2.30~3.00 |
-0.16, 0 |
10~200 |
1000 |
Table 3 Allowable deviation of the width of cutting edge strip
Unit: mm
Nominal thickness |
Nominal width |
|
≤100 |
＞100 |
|
Allowable deviation | ||
0.05~0.50 |
±0.1 |
±0.15 |
＞0.50~1.00 |
±0.15 |
±0.20 |
＞1.00 |
±0.25 |
±0.30 |
5. Appearance
Cold rolled strip is usually delivered in rolls.
6. Company Qualification
We have passed the national military standard quality system certification of GJB9001C-2017.
7. Magnetic Property
The magnetic properties of the samples after heat treatment shall meet the requirements in table 4.
Table 4 Magnetic properties of moment magnetic alloy
Grade of steel |
Thickness mm |
Maximum permeability μm |
Block coefficient Br/Bm |
Coercivity(At saturation magnetic induction) Hc |
Saturation flux density Bs |
mH/m |
A/m |
T |
|||
No less than |
No more than |
||||
1J51 |
0.01 |
44 |
0.87 |
20 |
1.5 |
0.02~0.04 |
75 |
0.92 |
15 |
1.5 |
|
0.05~0.09 |
75 |
0.92 |
15 |
1.5 |
|
0.10 |
75 |
0.90 |
15 |
1.5 |
|
8. About us
It has production bases and research and development centers in Beijing, tianjin, hebei, sichuan, quzhou and zhangjiagang.
http://www.specialsteelcn.com/
E-mail: 