Insulating Firebrick (IFB) 26 Grade from Germany
IFB 26 grade insulating firebricks feature low thermal conductivity due to high porosity, fired from clay-kaolin mixes for backup furnace insulation. Service limit around 1430°C makes them ideal for energy-efficient linings. HTS 6902.90.10 applies to these lightweight refractory bricks.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Measure and declare bulk density (<0.8 g/cm³ typical) to confirm insulating classification
• Avoid moisture exposure pre-import; provide dry storage certificates
• Distinguish from dense bricks via thermal conductivity test data