Crucibles mainly include silicon carbide crucible and graphite crucible, which are mainly made of flake graphite and silicon carbide. They have the characteristics of good thermal conductivity, high density, corrosion resistance, less slag adhesion, high mechanical strength, oxidation resistance, thermal shock, etc. they do not react with molten metals during the melting process, and they are not easy to leak and stick. They are widely used in smelting alloy tool steel and smelting non-ferrous metals., such as copper, aluminum and their alloys.
Crucible
| Subject | Molten copper, precious metals and rare earth alloys | Molten aluminum and low melting point metals | ||
| Forming method | Plastic | Isostatic pressure | Plastic | Isostatic pressure |
| Carbon content % | ≥38 | ≥45 | ≥38 | ≥45 |
| Bulk density, g/cm3 | ≥1.7 | ≥1.85 | ≥1.7 | ≥1.85 |
| Apparent porosity % | ≤29 | ≤21 | ≤29 | ≤21 |
| Cold crush strength, MPa | ≥20 | ≥25 | ≥20 | ≥25 |
| Fire resistance ℃ | ≥1500 | ≥1500 | ≥1400 | ≥1400 |
Oval, round, with mouth
Rongsheng

Rongsheng is a professional fireproof material supplier with 10 years of export experience to more than 80 countries. Rongsheng's main products are various fire bricks, shapeless fireproof materials, metallurgical materials, thermal insulation materials and so on.
Rongsheng Refractories Group







