CRNGO: cold-rolled-non-grain-oriented steel. This silicon steel is made without any special pressing to control crystal orientation (this is the overall texture of the material). With this mish-mash of un-oriented grain, it results in an isotropic material (where magnetic properties are omnidirectional).
This is the less expensive option and is used when cost takes priority over efficiency, where the magnetic flux does not have to be constant. CRNGO is found in generators with moving parts and electric motors.
CRGO: cold-rolled-grain-oriented steel. This silicon steel is processed so that the magnetic flux is constant and directional. It possesses a tight crystal orientation achieved during the rolling process. CRGO is supplied in coil form and is then rolled out into“cold-rolled”strips of less than 2mm.
In both cases of non-grain oriented and grain-oriented laminated sheets, the coil is rolled out and then cut to shape. This is the reason for its need for workability.
Grade | Nominal thickness(mm) | Density(kg/dm3) | Maximum iron loss P15/50 (W/kg) | Min. magnetic susceptibility B50 (T) | Minimum lamination factor(%) |
B35A210 | 0.35 | 7.60 | 2.10 | 1.62 | 95.0 |
B35A230 | 7.60 | 2.30 | 1.62 | 95.0 | |
B35A250 | 7.60 | 2.50 | 1.62 | 95.0 | |
B35A270 | 7.65 | 2.70 | 1.62 | 95.0 | |
B35A300 | 7.65 | 3.00 | 1.62 | 95.0 | |
B35A360 | 7.65 | 3.60 | 1.63 | 95.0 | |
B35A440 | 7.70 | 4.40 | 1.64 | 95.0 | |
B35A550 | 7.75 | 5.50 | 1.64 | 95.0 | |
B50A230 | 0.50 | 7.60 | 2.30 | 1.62 | 96.0 |
B50A250 | 7.60 | 2.50 | 1.62 | 96.0 | |
B50A270 | 7.60 | 2.70 | 1.62 | 96.0 | |
B50A290 | 7.60 | 2.90 | 1.62 | 96.0 | |
B50A310 | 7.65 | 3.10 | 1.62 | 96.0 | |
B50A350 | 7.65 | 3.50 | 1.62 | 96.0 | |
B50A400 | 7.65 | 4.00 | 1.63 | 96.0 | |
B50A470 | 7.70 | 4.70 | 1.64 | 96.0 | |
B50A600 | 7.75 | 6.00 | 1.66 | 96.0 | |
B50A700 | 7.80 | 7.00 | 1.70 | 96.0 | |
B50A800 | 7.80 | 8.00 | 1.70 | 96.0 | |
B50A1000 | 0.65 | 7.85 | 10.00 | 1.70 | 96.0 |
B50A1300 | 7.85 | 13.00 | 1.70 | 96.0 | |
B65A470 | 7.65 | 3.70 | 1.70 | 97.0 | |
B65A600 | 7.75 | 4.70 | 1.70 | 97.0 | |
B65A700 | 7.75 | 4.90 | 1.70 | 97.0 | |
B65A800 | 7.80 | 8.00 | 1.70 | 97.0 | |
B65A1000 | 7.80 | 10.00 | 1.70 | 97.0 | |
B65A1300 | 7.85 | 13.00 | 1.70 | 97.0 |
Type | Grade | Nominal thickness (mm) | Theoretical density(kg/dm3) | Maximum iron loss P17/50(W/kg) | Min. magnetic susceptibility B8 (T) |
Ordinary type | B23G110 | 0.23 | 7.65 | 1.10 | 1.80 |
B23G120 | 1.20 | 1.80 | |||
B27G120 | 0.27 | 7.65 | 1.20 | 1.80 | |
B27G130 | 1.30 | 1.80 | |||
B30G120 | 0.30 | 7.65 | 1.20 | 1.80 | |
B30G130 | 1.30 | 1.80 | |||
B30G140 | 1.40 | 1.80 | |||
B35G135 | 0.35 | 7.65 | 1.35 | 1.80 | |
B35G145 | 1.45 | 1.80 | |||
B35G155 | 1.55 | 1.80 | |||
High magnetic susceptibility type | B23P090 | 0.23 | 7.65 | 0.90 | 1.87 |
B23P095 | 0.95 | 1.87 | |||
B23P100 | 1.00 | 1.87 | |||
B27P095 | 0.27 | 7.65 | 0.95 | 1.88 | |
B27P100 | 1.00 | 1.88 | |||
B27P110 | 1.10 | 1.88 | |||
B30P100 | 0.30 | 7.65 | 1.00 | 1.88 | |
B30P105 | 1.05 | 1.88 | |||
B30P110 | 1.10 | 1.88 | |||
B30P120 | 1.20 | 1.88 | |||
B35P115 | 0.35 | 7.65 | 1.15 | 1.88 | |
B35P125 | 1.25 | 1.88 | |||
B35P135 | 1.35 | 1.88 | |||
Magnetic domain refinement | B23R080 | 0.23 | 7.65 | 0.80 | 1.87 |
B23R085 | 0.85 | 1.87 | |||
B23R090 | 0.90 | 1.87 | |||
B27R090 | 0.27 | 7.65 | 0.90 | 1.87 |