Grain-oriented electrical steel (GOES) is a specialized variant of electrical steel with anisotropic magnetic properties. The manufacturing process for this type involves careful control of crystal orientation. Sheets are rolled in a manner that aligns the crystal grains predominantly in one specific direction relative to the sheet, creating a preferred direction for maximum magnetic permeability. GOES plays a pivotal role in the fabrication of energy-efficient transformers and high-performance generators. Its characteristics include low power loss per cycle, low core loss, and high permeability, all optimized for a distinct magnetization orientation. Because of its crystal orientation, GOES, which enhances magnetic permeability in one direction, is perfect for transformers. The magnetic field direction of rotating machinery, which necessitates materials with isotropic magnetic properties, continually varies. Therefore this anisotropic attribute isn't appropriate.
Electrical steel is essential in electromagnetic applications like transformers and motors. It is clear from a comparison of non-grain-oriented electrical steel (NGOES) and grain-oriented electrical steel (GOES) that each is best suited for particular uses within the electrical sector due to its various qualities.
| Property | ATI Allegheny Ludlum Grain-Oriented Electrical Steel |
|---|---|
|
Density |
7.65 g/cm3 |
|
Ultimate Tensile Strength (Angle to Rolling Direction 0°-90°) |
361-405 MPa |
|
Thermal Conductivity (20-600 °C) |
70-0.0715 Cal/cm2▪Sec▪°C/cm |
|
Electrical resistivity |
48 Microhm-cm |
|
Thermal Coefficient of Resistivity (20-145 °C) |
0.047 Microhm-cm/°C |
|
Heat Capacity |
0.12 Cal/g/°C |
|
Curie Temperature |
730 °C |
|
Thermal Expansion (20-100 °C) |
11.9▪10-6▪cm/cm/°C |
|
Rockwell Hardness (Angle to Rolling Direction 0°-90°) |
85 |
Cold Rolled Silicon Steel
