Reaction-bonded silicon carbide square beams are suitable for the load-bearing structural frames of tunnel kilns, shuttle kilns, double-layer roller kilns, and other industrial kilns. This product offers high load-bearing capacity at elevated temperatures, does not bend or deform during long-term use, and has a service life several times longer than that of other materials, making it an ideal kiln furniture for industries such as sanitary ceramics and electrical porcelain. The product exhibits excellent high-temperature flexural strength, thermal shock resistance, and oxidation resistance. It remains deformation-free over prolonged use, significantly reduces energy consumption, and does not increase the weight of kiln cars. Main Technical Indicators of Reaction-Bonded Silicon Carbide Products: Item | Unit | Indicator Data | Operating Temperature | °C | 1380 | Density | g/cm3 | ≥3.02 | Porosity | % < 0.1 | Flexural Strength | MPa | 250 (20°C) | MPa | 280 (1200°C) | Elastic Modulus | GPa | 330 (20°C) | GPa | 300 (1200°C) | Thermal Conductivity | W/m·K | 45 (1200°C) | Coefficient of Thermal Expansion | K?1×10?? | 4.5 | Mohs Hardness | 13 | Acid and Alkali Resistance | Excellent | Square Beam Load-Bearing Capacity Table: Length (m) | Cross-Section Dimensions | Concentrated Load (kg) | Uniform Load Resultant (kg) | L | B | H | δ | 1 | 30 | 40 | 6 | 130 | 260 | 1 | 40 | 40 | 6 | 165 | 330 | 1 | 40 | 50 | 6 | 235 | 470 | 1 | 50 | 70 | 7 | 526 | 1052 | 1 | 60 | 90 | 9 | 1059 | 2118 | The flexural strength of reaction-bonded silicon carbide square beams is calculated based on 250 MPa, with a safety factor of 5, and the load-bearing capacity is determined for a length of 1 meter. If the product length is L, the load-bearing capacity can be calculated using the following formulas: Concentrated Load = Tabulated Value × 1/L, Uniform Load Resultant = Tabulated Value × 1/L. This load-bearing capacity is applicable at a temperature of 1380°C.