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natural graphite can be used for graphite mould
the outer diameter≤148mm
| ash | density | compressive strength | flexural strenght | resistivity |
| ≤700ppm | ≥1.82g/cm3 | ≥55mpa | ≥40mpa | ≤13μΩm |
the outer diameter≥160mm
| ash | density | compressive strength | flexural strenght | resistivity |
| ≤700ppm | ≥1.80/cm3 | ≥50mpa | ≥35mpa | ≤13μΩm |
natural graphite