99.7% alumina ceramic thread

99.7% alumina ceramic threaded products belong to high-purity alumina ceramics (Type A material, Al₂O₃ content ≥ 99.7%).

Core Performance

1. Mechanical Properties: Biaxial bending strength ≥ 300 MPa, fracture toughness ≥ 3.5 MPa·m¹/², suitable for high wear resistance and high load applications.

2. Thermal and Electrical Properties: Thermal expansion coefficient 8.1 × 10⁻⁶/℃, thermal conductivity 32 W/(m·K); dielectric strength ≥ 18 KV/mm, dielectric loss ≤ 0.0002 (1 MHz), suitable for high-temperature insulation applications.

Product Types and Uses

• Internal/External Threaded Ceramic Tubes: Used for insulation protection of electric heating resistance wires and high-temperature sealing components, such as 95/99 alumina internal threaded tubes which can withstand temperatures above 1650℃.

• Threaded Ceramic Fittings: Including nuts, caps, bolts, etc., used for wear-resistant structural components or vacuum device sealing.

Typical Applications

• Industrial Fields: High-temperature furnace tubes, ceramic bearings, water valve plates, and other wear-resistant components.

Supports custom specifications.