Original
By certification 
1. Product Description
Products are mainly used in: All kinds of transformers, relays, electromagnetic clutch core working in medium magnetic field.
2. 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 |
- |
- |
|
1J50 |
≤0.03 |
0.30~0.60 |
0.15~0.30 |
≤0.020 |
≤0.020 |
49.0~50.5 |
≤0.20 |
Balance |
- |
- |
3. 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 |
4. Smelting Process
The products are smelted by vacuum induction furnace.
5. Company Qualification
We have passed the quality management system certification of GB/T 19001-2016/ISO9001:2015.
6. Delivery State
The product is delivered in cold rolled condition.
7. Magnetic Property
The magnetic properties of the samples after heat treatment shall meet the requirements in table 4.
Table 4 Magnetic properties of samples after heat treatment
Grade of steel |
Thickness mm |
Permeability in the 0.4A/m strength of this magnetic field μ0.4 |
Maximum permeability μm |
Coercivity(At saturation magnetic induction) Hc |
saturation flux density Bs |
mH/m |
A/m |
T |
|||
No less than |
No more than |
||||
1J50 |
0.05~0.09 |
2.5 |
35 |
20 |
1.5 |
0.10~0.19 |
3.8 |
43.8 |
12 |
1.5 |
|
0.20~0.34 |
4.4 |
56.3 |
10.4 |
1.5 |
|
0.35~0.50 |
5.0 |
65 |
8.8 |
1.5 |
|
0.51~1.00 |
5.0 |
50 |
10 |
1.5 |
|
1.10~2.5 |
3.8 |
44 |
12 |
1.5 |
|
8. Packaging And Transportation
The packing method of the strip is braided cloth wraped, and transparent film wrapped, and wooden case packed.
9. About us
Contact us and we will meet all your needs.
http://www.specialsteelcn.com/
