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MASTRANT

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  • P2
  • P3
  • P4
  • P5
  • P6
  • M2
  • M3
  • M4
  • M5
  • M6

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Steel guying wires are still very common, however they are heavy, difficult to work with and their strength deteriorates with time due to corrosion and general ageing. 

Their electrical conductivity is an undesirable feature as this interacts with the antennas and deteriorates their radiation pattern.

Thanks to the recent developments of materials, both amateur and professional users are changing over to non-conductive guys and ropes and will never go back to using the steel wires once the benefits are fully appreciated. The non-conductive synthetic fibres have all the necessary qualities: high strength, negligible elongation but with good flexibility, long life, low wet-ability, minimum bending radius giving the ability to tie knots, excellent UV radiation resistance, weather durability and resistance to acids and alkali.

MASTRANT® optimized lines are made from proven modern materials such as Polyester (Mastrant P), Dyneema® (Mastrant-M, Mastrant-D and D-F2) and Vectran®. The range covers products for a variety of applications, from thin support lines used for tying wire antennas and beams, to guys for supporting small and portable masts and vertical antennas, to anchoring ropes for high antenna towers tens of metres high. The product line is supplemented by a wide range of stainless steel accessories.

The development, testing and quality control of all these products ensures a superior product delivering long life. They are subject to continuous verifying in real conditions in co-operation with many users.

 

 

"Is Mastrant® made from Kevlar?"

People are used to using Kevlar for “high strength ropes with lower elongation". No matter what material the rope is made of. Kevlar (or Technora, Twaron, etc.) are brand names for aramid fibres. Those fibres are susceptible to UV degradation so they are always protected with extruded outer protective jackets - for example Phillystran® HPTG-I.  

However, there is another material for ropes for mast guying - Ultra-High Molecular Weight Polyethylene (UHMwPE); trade names are Dyneema® or Spectra®. It has excellent UV resistance, high knot strength and low specific gravity. Mastrant-M ropes using new Dyneema® Max Technology (by DSM) maximizes the scope of the world’s strongest fiber. Mastrant® is pioneering the use of high performance synthetic rope in permanently loaded applications. Designed specifically for mooring production facilities in deep waters, DSM’s new ‘ultra high strength at low weight’ Dyneema® DM20 fiber delivers unrivalled rope strength, stiffness, durability and longevity.

 

 

Specification of the products 

Explanations of terms in columns can be found below the table. In case of any questions feel free to contact us via e-mail at info@hamradio.es

ProductDiameterStrengthSWLElong.Weight
mminchdaN, ~kg%g/m
Mastrant-P23/32100302.42
31/8200602.45
45/324001202.415
53/165001502.420
61/48502552.433
85/1613003902.449
103/819005702.471
121/222006602.495
149/1632009602.4137
Mastrant-M23/32250751.24
31/83901171.27
45/329002701.211
53/1611503451.221
61/418505551.232
85/1626007801.245
103/8385011551.282
121/2550016501.2101
Mastrant-D (discontinued)23/32200601.24
31/84001201.27
45/328002401.214
53/1611503451.221
61/418005401.234
85/1626007801.246
103/8400012001.257
121/2680020401.290
D-F1/D-F245/3217005100.549
53/1629008700.5416
61/4370011100.5422
85/16750022500.5444
103/8990029700.5475
121/21700051000.5496
149/162400072000.54135
165/82800084000.54153

Strength = breaking strength of the rope in ideal circumstances
SWL = Safe working load. Recommended 30 % of the strength
1 daN = 10 N, about 1 kg
Mastrant are braided ropes with twisted cores. All have cover from Polyester
Dyneema® is brand of DSM for Ultra-High Molecular Weight Polyethylene
Mastrant-M ropes use new Dyneema® Max Technology fibres DM20
We supply any length of the rope, 100 m reels are discounted.

 

 

NEW PRODUCT:

 

Revolutionary new high-strength guy ropes using Dyneema® Max Technology

Mastrant-M

 

Mastrant® M ropes using new Dyneema® Max Technology (by DSM) maximizes the scope of the world’s strongest fiber. Mastrant® is pioneering the use of high performance synthetic rope in permanently loaded applications. Designed specifically for mooring production facilities in deep waters, DSM’s new ‘ultra high strength at low weight’ Dyneema® DM20 fiber delivers unrivalled rope strength, stiffness, durability and longevity.

Laboratory tests demonstrate that ropes made from DM20 fiber retain the property characteristics of Dyneema®, even under long-term high tensions. Critical behavioral qualities, such as high static strength and stiffness, exceptional abrasion, fatigue and creep resistance enable a smaller, lighter rope to deliver improved performance and operational benefits. Dyneema® Max Technology performs significantly better than SK 78 on creep and thus is another step change versus all other HMPE (high-modulus polyethylene). At the same time it keeps the good properties of Dyneema® fiber, which are appreciated by many users. The breakthrough product now offers all the benefits of ropes made with Dyneema® also to the markets of permanently loaded applications like guying of towers, masts and antennas.

 

Mastrant-P

  • Construction: Braided rope with twisted cores
  • Core: Polyester, parallel-arranged twisted cores
  • Cover: Polyester 12 or 16 (depending on the diameter)

 

Mastrant-M

  • Construction: Double braided rope
  • Core: 100% Dyneema DM20, braided
  • Inner cover: Polyester staple (only on ropes with diameters from 6 mm and up)
  • Outer cover: Polyester 12, 16, 24 or 40 (depending on the diam.)

 

Mastrant-D (discontinued)

  • Construction: Double braided rope
  • Core: 100% Dyneema SK 75, braided
  • Inner cover: Polyester staple (only on ropes with diameters from 6 mm and up)
  • Outer cover: Polyester 12, 16, 24 or 40 (depending on the diam.)

 

D-F2

  • Construction: 12-strand braided heat set rope
  • Material: 100% Dyneema SK 78, special surface finish

 

Comparison of Mastrant ropes features

 

 

Comparison with steel wires

 

 

 

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