SK30 SK32 SK34 SK36 Refractory Brick and Fire Clay Brick with Low Thermal Conductivity for Furnace
Leadsun produces a comprehensive range of fire clay bricks consisting of 30–65% alumina, all of which exhibit excellent strength.
For more arduous environments, we offer a hand-fired "super duty" fire clay brick with a very high mechanical strength.
Typically, our firebrick range is based upon flint clay, giving it both a low iron and low alkali characteristic. Resistance to thermal shock, abrasion, chemical attack, and reducing atmospheres are just some of the key criteria determining the choice of product within each application. A wide range of sizes are held in stock.
| Item | SK-30 | SK-32 | SK-34 | SK-36 |
|---|---|---|---|---|
| Al₂O₃ % (min) | 30–35% | 35–38% | 38–42% | 50–55% |
| Fe₂O₃ % (max) | 3 | 3 | 2.8 | 2.5 |
| Refractoriness | ≥ 1670°C | ≥ 1690°C | ≥ 1710°C | ≥ 1750°C |
| Refractoriness under load, 0.2 MPa (°C) | ≥ 1270 | ≥ 1350 | ≥ 1350 | ≥ 1430 |
| Apparent porosity (%) | 20–24 | 20–24 | 19–23 | 18–22 |
| Bulk density (g/cm³) | 2.00–2.05 | 2.05–2.1 | 2.1–2.15 | 2.15–2.25 |
| Cold crushing strength (MPa) | ≥ 25 | ≥ 30 | ≥ 35 | ≥ 45 |
| Thermal expansion at 1000°C (%) | ≤ 0.6 | ≤ 0.55 | ≤ 0.55 | ≤ 0.4 |
- Low thermal conductivity and good thermal insulation performance.
- Long service life, easy operation, and can be shaped freely.
- Product specification: standard form, normal standard, shaped, and special shaped bricks.
- Can be used in various kilns because of its cost-effectiveness and general tray package. Among all refractory materials, it is the most widely used.
A: Yes, we welcome sample orders to test and check quality. Mixed samples are acceptable.
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