Forged CE stainless steel HR bow shackles.
'HR' stands for High Resistance. The 17.4 PH stainless steel that these shackles are forged from offers very high level mechanical performance characteristics.
These models, which form an integral part of the fittings on large ocean-going monohulls and multihulls, are also widely used in the industrial sector.
A shackle forged in HR 17.4 Ph Stainless Steel can be up to 60% more resistant than a shackle made from 316L Stainless Steel.
Hot dropped forged from a single piece of stainless steel, adding
strength and consistency of manufacture for total security and
reliability. The technical characteristics of every Shackle is closely
controlled and tested before, during and after the manufacturing
process.
CE marked
in accordance with the Machines Directive 2006/42, these Wichard
products can be used as lifting accessories. Each product displays the
following information:
- Working Load Limit (WLL) = 5:1 safety factor of the break load,
- CE marking,
- Product origin,
- Manufacturer’s logo.
HR Shackles should not be used for prolonged submersion.
Material and conformity certificates available on request.
Load definitions:
Working Load (WL)
= Static load at which the product will still function without
excessive friction or wear or permanent deformation of components.
Breaking Load (BL) = Static load at which a major failure of one or more structural components or complete destruction of the product.
Working Load Limit (WLL) = 5:1 safety factor of the breaking load, used for industrial applications.
The Forging Process
Wichard
forges its parts by drop forging, using a forge hammer: an operation
which involves forming a heated slug under pressure between two dies.
This technique makes the structure of the metal homogeneous and gives the part strength and elasticity.
The parts are then finished and tested prior to being sold.
Forging
guarantees the elasticity of the product, its resistance to corrosion
and strength, while optimising the size of the parts.