B40-C Data Sheet

• B₂O₃....................37-44%
  
• Al₂O₃...................32-37%
  
• CaO......................21-27%
  
• Na₂O......................<3%
  
• SiO₂......................<5%
  
  

Coefficient of Thermal Expansion...............6.5 x 10-7
Softening Point........................................~650°C
Approximate Initial Fusion Temp................1600°F (870°C)
Density.......................................................2.5 gm/cc +/-

Applications:

• Used to stop the penetration of Aluminum and it's dross. Amount used for this purpose is 8-12% by weight.
  
• Sintering aid for SiC bodies.