  |
Semi-Processed Products
LTV's semi-processed electrical steel products are manufactured to meet
a wide range of customer core loss, permeability and thickness requirements.
Semi-processed material must be annealed to develop the full magnetic
properties. A summary of LTV's capabilities by type is listed below.
| Maximum Core Loss* (Watts/Lb.) |
||||||
| Nominal Thickness |
Type 2 | Type 3 | Type 4 | Type 5 | Type 6 | Type 7 |
| 0.018 | 3.25 | 3.00 | 2.55 | 2.25 | 2.00 | 1.90 |
| 0.022 | 4.00 | 3.65 | 3.10 | 2.75 | 2.45 | 2.35 |
| 0.025 | 4.50 | 4.15 | 3.50 | 3.15 | 2.75 | 2.65 |
| 0.028 | 5.05 | 4.65 | 3.95 | 3.50 | 3.10 | |
| 0.031 | 5.60 | 5.15 | 4.35 | |||
| Permeability* Expected Minimum Value (G/Oe) |
|
| Product | Permeability |
| Type 2 | 2300 |
| Type 3 | 2300 |
| Type 4 | 2200 |
| Type 5 | 1950 |
| Type 6 | 1900 |
| Type 7 | 2050 |
* Epstein samples are annealed prior to magnetic testing. Samples are annealed at 1450ºF in a hydrogen-nitrogen atmosphere with a plus 50/55ºF dew point in the furnace. Testing is conducted at 1.5T and 60 Hz.
Fully-Processed Products
LTV has developed several fully-processed carbon motor lamination grades.
The advantage of fully-processed is the material does not require any
heat treatment. Applications for fully-processed electrical steel include
small electric motors, generators, fans, relays and power tools. All fully-processed
requirements are subject to inquiry.
| Maximum Core Loss (Watts/Lb.) |
||
| Representative Thickness |
FP-1 | FP-2 |
| 0.022 | 5.3 | 4.4 |
| 0.025 | 6.0 | 5.0 |
| 0.028 | 6.7 | 5.6 |
| |
Flat Rolled Products | Electrical Steel | Tin Mill Products | Tubular Products