What is the strongest metal cable?

09 Apr.,2024

 

Steel wire is an extremely useful and versatile material that can be found in many things you use everyday in the home, as well as in the car you drive. Steel wire is also useful in commercial, industrial and military applications—for cleaning, for spring-loaded devices, for reinforcing, for structural integrity, and even for making music.

However, not every piece of wire can be used for everything. Steel wire is manufactured to different levels of strength, elasticity and thickness for different purposes. Here’s a quick overview of 8 common types of steel wire.

MUSIC WIRE

Named for its use in piano strings, music wire could be considered the “work horse” of steel wire. Its high carbon content makes it a strong, durable, all-around wire that is excellent for high levels of stress and repeated loads (for example, in springs or surgical equipment).

OIL TEMPERED WIRE

Similar in structure to music wire, oil tempered wire is usually drawn to thicker diameters, then heated and “quenched” with oil to make it both strong and flexible. This wire is also used for spring applications, such as garage door springs.

BROOM WIRE

Most commonly used in the brushes of street cleaners, broom wire is usually a strong, high-carbon wire that is galvanized or PVC coated to endure repeated friction.

DUCT WIRE

This is a flexible coated wire that is commonly used to provide structure and flexibility, such as with heating and air ducts that have to curve around corners while retaining their shape.

HARD-DRAWN WIRE

This is steel wire that has simply been drawn to a certain diameter without any additional treatment or tempering. It’s a good all-around wire for bending into wire forms or springs, but it is unable to endure high amounts of stress the way music wire does. It’s frequently used in products like metal baskets, shopping carts, safety pins, and some auto parts.

CHROME SILICON WIRE

This steel alloy wire is cold-drawn and heat-treated to be exceptionally strong, able to withstand shock and high-impact loads that the typical wire spring could not withstand. It’s an excellent choice for recoil springs in guns or in high performance vehicles.

LOW CARBON STEEL WIRE

High carbon content makes steel strong, but at the expense of flexibility. For applications where the wire needs to bend more easily, (like low-stress springs or coat hangers) low carbon steel is a better option.

PATENT WIRE

Patenting refers to a specific treatment process by which steel wire is heated and quenched to make it stronger and more durable. Patent wire is useful for high tension applications and for wire rope.

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Wire ropes are used in many industries worldwide, whether lifting objects in the construction industry or pulling cable cars up a mountainside. Wire ropes need to be strong and reliable to accomplish heavy lifting tasks, but what is the strongest wire rope?

The strongest steel wire rope is a 2 ½ inch thick 6 x 36 IWRC (independent wire rope core) cable with a breaking strength of 291 000 Kg. Only 20% of the total breaking strength is used when lifting objects to maintain a high safety margin and prevent the cable from failing. 

Wire ropes are so much more than just a piece of wire attached to an object that needs to be lifted. If you would like to find out what makes a wire rope strong and how much it can lift, then read on:

What Is The Strongest Wire Rope?

A wire rope is known as a machine because it has many components that it relies on to give it the strength required. A wire rope consists of multiple steel wires that form individual strands laid in a spiral pattern around a core. The specific pattern that the cable is laid in will give it strength and flexibility and assist the cable in bending stress.

The strongest steel wire rope is a 2 ½ inch (64mm) 6 x 36 independent wire rope core (IWRC) with a Warrington seal. The 6 x 36 Wire rope offers the highest maximum breaking load in its class, 291 000kg.

Wire ropes are not utilized to carry or pull weight up to their maximum breaking load but rather only use 20-30% of this measure to maintain a large safety margin. Nevertheless, this is still very impressive.

A 2 ½ inch 6×36 cable can be used as individual strands and laid into a thicker wire rope to make it even stronger, but this will only be done for very limited one-off applications.

The Different Wire Rope Patterns

A strand pattern can be affected by the layers, the wires per layer, and the wire diameter. The following five patterns are the most commonly used in wire rope construction:

  • The Single Layer – The most common example is a seven-wire strand with a single-wire center and six wires of the same diameter around it.
  • The Filler Wire – Two layers of uniform-size wire are wrapped around a central core, with the middle layer consisting of half the amount of wires as the outer layer. The smaller filler wires are equal to the number of wires in the inner layer and are laid in the valleys between the wire.
  • The Seale – Two layers of wires are wrapped around a central core with the same amount of wires in each layer, and all the wires are the same thickness. The larger outer wires rest in the gaps between the smaller inner wires.
  • The Warrington – Two layers of wires are wrapped around a central core, and they are the same thickness of wire as in the inner layer. Two different wire diameters are then wrapped interchanging (large and small) to form the outer layer.
  • The Combination – A combination strand is made using any combination of two or more of the patterns listed above.

The 3 Common Wire Rope Lays

The strand direction and type of lay refer to how the wires are laid to make up a strand, either right or left twist, and how the strands are laid around the core either regular lay, lang lay, or alternate lay.

  • Regular Lay – wires in the strands are laid opposite in direction to the lay of the strands
  • Lang Lay – wires are laid in the same direction as the lay of the strands
  • Alternate Lay – The wire rope consists of alternating Regular Lay, and Lang Lay strands are mainly used for special and unique applications.

The Largest On Shore Lifter Crane

In Ingleside, Texas, a crane, known as the ‘Heavy lifting devise,’ is a 550-foot crane rated to lift 13000 metric tons in a single lift. The Crane has successfully lifted 10 000mT in a single lift and is mainly used to assemble large off-shore oil rigs. The Crane utilizes a 2 ½ inch 6 x 36 cable in an array of pulleys to achieve this massive lifting capacity.

World Record Wire Rope

Wire Rope manufacturer Redaelli achieved the Guinness World Record for the heaviest wire rope in the world in 2013. The 4003 meters (13 134ft) cable weighs 438 tons. The Wire Rope is 153mm (6.06 inches) thick and was manufactured to operate in the marine field.

 It was designed to withstand the massive crushing pressures in the ocean at depths below 3000m (9 845ft) and only has a load limit of 1000 tons. The Wire Rope will be used in the recovery operation of large vessels at the bottom of the sea.

Alternatives To Steel Wire Rope

In the heavy lifting industry, three types of rope are recognized for their superior lifting and breaking strength abilities. Each rope type is much lighter and offers smaller diameters than steel wire rope.

  • Aramid rope is made from a robust fiber called Twaron; this rope has a high fiber ratio, is thermally stable, and can withstand chemical spills. Aramid rope’s advantage over steel wire rope is its smaller diameter and lighter weight.
  • Dyneema rope is a Polyethylene fiber that offers maximum strength at minimum weight and is as strong as steel wire rope.
  • Carbon Fibre ropes are made with Carbon T-700 and are also as strong as their steel wire counterparts. The carbon ropes offer a greatly reduced weight compared to steel and have the same breaking strengths. 

Conclusion

The Strongest wire rope is a 2 ½ inch steel cable and has a breaking strength of 291 tonnes. Many different factors make a cable strong, mainly due to the rope’s thickness and spiral pattern. Many achievements have been made in the lifting industry with new technology in developing high-strength ropes equally as strong as wire rope. But wire rope is still used for heaving lifting in many industries.

References

What is the strongest metal cable?

What Is The Strongest Wire Rope?

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