| Ash | 0.3% max |
sico-Chemical Specifications   UHP DIA. 350mm(14 inch) | |||
Item | Unit | Electrode | Nipple |
| ResistivtyMax. | μΩm | 5.5 | 4.0 |
| Bending StrengthMin. | Mpa | 11.0 | 20.0 |
| Elastic ModulusMax. | Gpa | 14.0 | 18.0 |
| Bulk DensityMin. | g/cm³ | 1.68 | 1.78 |
| CTEMax. | 10-6/℃(100-600℃) | 1.50 | 1.40 |
| Ash ContentMax. | % | 0.30 | 0.30 |
| Note: Ash content only for reference. | |||
Grate electrodes are widely used for production of alloy steels, metal and other nonmetallic materials, etc.DC electric arc furnace.AC electric arc furnace.Submerged arc furnace.Ladle furnace.
There should be less than two defects or holes on the electrode surface, the maximum size of which is mentioned in the below chart.There should be no transverse crack on the electrode surface. For the longitudinal crack, the length should be less than 5% of the electrode circumference and the width should be 0.3 to 1.0 mm.The width of black area on electrode surface should be less than 1/10 of the electrode circumference and the length should be less than 1/3 of the electrode.
| SpecificationDefect Dimension | Nominal Diameter of Grate Electrode (mm) | |
| 300–400 | 450–600 | |
| Diameter (mm) | 20–40 | 30–50 |
| (< 20 mm should be negligible) | (< 30 mm should be negligible) | |
| Depth (mm) | 5–10 | 10–15 |
| (< 5 mm should be negligible) | (< 10 mm should be negligible) | |
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