What are the thermal expansion challenges for wrought iron outdoor trash can joints?

Wrought iron outdoor trash cans face significant thermal expansion challenges at their welded joints and connection points. As temperatures fluctuate between day and night or across seasons, the metal expands when heated and contracts when cooled. This continuous movement creates stress at rigid joints, leading to several problems: cracked welds, loosened fasteners, distorted frames, and compromised structural integrity. Unlike some modern materials, wrought iron has limited natural flexibility, making joints particularly vulnerable. In extreme cases, repeated expansion/contraction cycles can cause complete joint failure, resulting in detached panels or collapsing sections. Proper design including expansion joints, flexible sealants, and regular maintenance is crucial to mitigate these thermal effects and extend the product's lifespan in outdoor environments.