The air separation plant uses air as raw material and turns it into liquid via a refrigeration cycle. Then through cryogenic distillation, liquid air is separated into several components, including oxygen, nitrogen, argon and other rare inert gases.

Heat balance inside the air separation plant is achieved by the cooling system and heat exchanger. Advances in modern technology allow us to use the aluminum plate-fin heat exchanger for greater heat transfer efficiency.

Yinbang is a pioneer in the use of 4104/3003/4104 aluminum alloy (clad ratio: 12% or 15%, thickness: 0.6 to 1.2t) on the cooling system and heat exchanger of air separation plants. The clad metal delivers excellent corrosion resistance within a specific stress range, which increases the life span of the entire air separation system.

Chemical Composition (wt%) Si Fe Cu Mn Mg Zn Bi each Other Al
Brazing alloy 1 9.0- 10.5 0.8max 0.25 0.1 1.0- 0.2   0.05-0.2 0.05 0.15  
  max max 2.0 max max max
Brazing alloy 2 9.0- 10.5 0.8max   0.25 0.1 1.0- 0.2   0.05-0.2 0.05 0.15  
max max 2.0 max max max
Core alloy 0.6 Max 0.7 max 0.05-0.2 1.0-1.5 0.03 max 0.1 max 0.05 Max 0.15 Max