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Minimum Breaking Strength

Minimum Breaking Strength

Minimum Breaking Strength, also known as Minimum Breaking Force, ultimate load, or tensile strength, is the minimum force at which the chain, rope or webbing during manufacture has been found by testing to break when a constantly increasing force is applied in direct tension. Breaking strength(force) values are not guarantees that all chain segments will endure these loads(see proof test). This breaking strength test is a manufacturer's attribute acceptance test and shall not be used as criteria for service and design purpose, in real applications the design factors and use conditions has to be determined by experienced engineers. As an example, a grade 70 transport chain has design factor of 4:1, while the design factor of polyester webbing is 3:1.

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