Permissible tension and breaking tension of stainless steel wire rope

When using stainless steel wire rope as a key load-bearing component, in order to ensure the safety of lifting, it is necessary to calculate its allowable tensile force and breaking force to ensure that the load-bearing tensile force is within the allowable range. So, how do we calculate these two parameters? New Century has summarized the following two formulas for everyone.
 

Stainless steel wire

We call the ratio of the breaking force to the allowable force the safety factor, denoted by K. Among them, K-the safety factor of the steel wire rope; Sb-the breaking force of the steel wire rope (kN); P-the allowable tensile force of the steel wire rope (kN).

Depending on the purpose of the wire rope, the K value is also different. The wire rope used on the general crane K=5.5, and the manual lifting equipment (such as rewinding, etc.) K=4.5. The calculation of wire rope breaking force is more complicated. The country implements standardized management of steel wire rope specifications and tensile strength, which can be estimated according to the following empirical formula:

Stainless steel wire

The allowable tension of the stainless steel wire rope is to ensure the allowable force of the wire rope under safe lifting conditions. In order to ensure the safety and reliability of hoisting, New Century also reminds operators that the wire rope cannot be broken, so the breaking force must be several times larger than the allowable force to ensure its complete reliability.