Why is it difficult to weld Aluminium?:Low MP of AluminiumHigh thermal conductivitySoftnessSpecific heat capacity is low

Aluminium welding can be challenging for several reasons:

1. Low Melting Point: Aluminium has a lower melting point compared to other metals. This means it can melt or warp easily under high heat, making it difficult to weld without causing damage.

2. High Thermal Conductivity: Aluminium conducts heat very well. This means that the heat from the welding process can spread quickly through the material, potentially causing distortion or other damage.

3. Softness: Aluminium is a relatively soft metal, which can make it more difficult to work with in a welding context. It can be easy to accidentally puncture or otherwise damage the material.

4. Low Specific Heat Capacity: Aluminium's low specific heat capacity means it requires less heat to change its temperature. This can make it more difficult to control the heat during the welding process, increasing the risk of damage or mistakes.