Wire Rope Tensile Strength (MBS)

Wire Rope Tensile Strength – MBS:

The Wire Rope Tensile Strength of wire is reported in terms of Minimum Breaking Strength (MBS).  It achieves this rating based on destruction testing at the factory.  In general – every batch will exceed its rating by some amount.  This is done for safety purposes. A more detailed discussion of Certification and Mill Certificates is available HERE.

Please note that MBS is NOT the safe working load (SWL) or maximum working load (MWL) that the wire is rated at for a given purpose.  Basically, the SWL depends on the MBS and a safety factor chosen by the Design Engineer.  A further explanation of the SWL is available HERE.

MBS Factors

Some wire is coated, and some is naked 🙂 The MBS of a wire is not affected by a coating in any meaningful way – it depends on the following Factors (Note: for a more detailed discussion – simply click on our Wire Rope Specification Overview:

  • Base material (e.g. galvanised steel vs stainless steel);
  • Grade (e.g. AISI 316 vs 304; and Various Grades of Galvanised)
  • Structure (e.g. 1×19 vs 6×36)
  • Core (e.g. FC vs IWRC) and
  • Diameter

G316 Stainless Steel Wire Rope

1X7 Stainless Steel Wire Structure1X19 Stainless Steel Wire Structure7X7 Stainless Steel Wire Structure7x19 Stainless Steel Wire Structure Diagram

G1570 Galvanised Steel Wire Rope

6X7 Galvanised Steel Wire Structure7X7 Galvanised Steel Wire Structure6x19 Galvanised Steel Wire Structure Diagram7x19 Galvanised Steel Wire Structure Diagram

G2070 Galvanised Steel Wire Rope

7X7 Galvanised Steel Wire Structure7x19 Galvanised Steel Wire Structure Diagram

 

 

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