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Due to properties like high hardness, high thermal conductivity and low thermal expansion, silicon carbide ceramics are suitable for extreme environments. They are applied in lithium battery kiln rollers, new energy vehicle power chips, etc., and serve as core materials in fields such as wear resistance and high temperature. When selecting, they need to match the working conditions.
Silicon carbide ceramics are a material almost born for "extreme environments". Their high hardness, high thermal conductivity, low thermal expansion, excellent chemical inertness and high-temperature strength make them irreplaceable in the fields of wear resistance, corrosion resistance, high temperature and thermal management.
From the kiln rollers that support the sintering and crystallization of lithium batteries in our mobile phones, to the silicon carbide power chips that protect the core electric drives of new energy vehicles, and even to the first wall of nuclear fusion reactors that may light up humanity in the future, silicon carbide ceramics are everywhere. They are truly "industrial teeth" and "material pioneers". When making a selection, it is essential to match the most suitable type and process of silicon carbide according to specific working conditions (temperature, corrosion, stress, precision).
| Property | Units | Value / Description |
|---|---|---|
| Chemical Composition | ||
| SiC Content | % | ≥99 |
| Physical Properties | ||
| Bulk Density | g/cm³ | 2.65 ~ 2.75 |
| Apparent Porosity | % | ≤17 |
| Mechanical Properties | ||
| Modulus of Rupture at 20°C | MPa | 90 ~ 100 |
| Modulus of Rupture at 1300°C | MPa | 110 ~ 120 |
| Modulus of Crushing at 20°C | MPa | 300 |
| Hardness | KG/MM² | 1800 ~ 2000 |
| Fracture Toughness | MPa·m¹/² | 1.8 ~ 2.0 |
| Thermal Properties | ||
| Thermal Conductivity at 1200°C | W/m·K | 35 ~ 36 |
| Thermal Expansion Coefficient at 1200°C | ×10⁻⁶/°C | 4.6 |
| Thermal Shock Resistance at 1200°C | - | Very Good |
| Operating Limit | ||
| Maximum Working Temperature | °C | 1650 (in oxidizing atmosphere) |
