Detailed Product Description

Main material:
Ceramic parts: ≥93.5% Al₂O₃
Glaze: color white or pink, T≥1,450°
Flange: TU1 (OFHC Cu) or Ni₄₂Fe₅₈ alloy
Copper contact: TU1 (OFHC Cu)
Solder: Ag₇₂Cu₂₈ alloy
Gate tube: TU1 (OFHC Cu) or Ni₄₂Fe₅₈ alloy

Technical specifications
The all products can reach to the below standards
Leak rate: ≤1 x 10-8 bar cm³/sec with helium
Flatness of copper surface: ≤0.008mm
Parallelism between copper surfaces: ≤0.03mm
Concentricity between flange and copper: ≤0.5mm
Pull test: ≥5kN/cm²
Temperature cycling: -65° - 200°, 5 circles
Nickel plating thickness: 2-7μm