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What are the differences?
Lifting chains and components, including chains, hooks, and connecting links, come in various steel grades. Selecting the appropriate grade is crucial for ensuring the safety and effectiveness of lifting operations.
Steel grades for lifting equipment are often classified by terms such as Grade or Class. The most common grades are Grade 8, Grade 10, and Grade 12 (also known as Grade 80, Grade 100, and Grade 120). These grades are recommended for use in chain slings and other lifting applications. Other grades are available as well, each offering different properties and capabilities.
The grade of steel indicates the alloy used in its production, which affects the properties of the component or chain. Alloy steel, primarily composed of iron and carbon, has its hardness and tensile strength determined by the amount of carbon present.
We have illustrated these differences in the animation video below, which also explains the implications of combining items from different grades and sizes.
Grade 8 steel alloy, also known as Grade 80, is the most basic grade approved for lifting applications. While it is typically more affordable, Grade 8 chains and components tend to be larger and heavier compared to higher-grade options.
Grade 8 is designed for heavy lifting in challenging conditions, making it suitable for use in industries such as mining, construction, and offshore rigging.
Grade 10 steel alloy, also known as Grade 100, offers enhanced performance compared to Grade 8. Components made from Grade 10 provide approximately 25% higher Working Load Limit (WLL) than those made from Grade 8. This means you can use a lighter chain sling or other lifting equipment while achieving the same or even greater WLL.
Grade 10 chains and components are commonly used in industries such as construction and mining due to their improved strength and efficiency.
Grade 12 steel alloy, also known as Grade 120, represents the latest advancement in lifting steel alloys. It offers superior performance and allows for lighter chains and components. With Grade 12, you can lift up to 50% more compared to Grade 8 chains and 20% more than Grade 10 chains, enabling you to handle heavier loads without needing to upgrade your crane.
Additionally, compared to Grade 8, you can use a smaller diameter chain or component while still achieving the same Working Load Limit (WLL).
Grade 12 chains and components are designed for the most demanding lifting tasks, where extreme strength and durability are required.
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