What is the minimum grade of chain required for hoisting, lifting, or rigging?

The minimum grade of chain required for hoisting, lifting, or rigging is typically Grade 80 alloy. This grade chain is designed for heavier load applications and has a higher strength-to-weight ratio compared to lower grades. Grade 80 alloy chain is made from heat-treated alloy steel, providing it with enhanced durability and resistance to fatigue. This makes it particularly suitable for applications where safety and reliability are critical, such as in lifting and rigging scenarios. Using a chain of this grade ensures that it can safely handle the loads typically encountered in industrial and construction environments.

Lower grades, such as Grade 30, Grade 50, and Grade 60, do not offer the same level of strength or safety margins, making them unsuitable for the demanding conditions associated with hoisting and lifting applications. Therefore, Grade 80 is the industry standard to meet safety and performance requirements effectively.