The sheathed prestressing steel strands in the defcor® product line from voestalpine Wire Technology are used for highly stressed prestressing applications, such as in bridge construction, large container construction, and wind turbines. The strands are designed for reliable force transmission, defined mechanical properties, and controlled sheathing.
As an integrated manufacturer with a continuous value chain from the steel mill to the finished product, voestalpine Wire Technology can take project-specific requirements into account and tailor technical designs accordingly.
✔ From ore to wire
✔ 400+ steel alloys
✔ Own R&D facilities
✔ CO2 reduced processes
Applications of defcor® sheathed prestressing strands
Construction:
- Prestressing of structural elements and stay cables (e.g. in bridge construction)
- Precast concrete components and infrastructure projects
- Prestressing systems for tanks and silos (large-scale container construction)
Customized wire solutions:
- individual wire development for special industry requirements
- prototypes & small series for research and industry
- material consulting for demanding projects
Technical Details on sheathed prestressing strands
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Prestressing steel strand, 7 wire galvanized, waxed and sheathed
Nominal diameter of strand Total mass Mass of components DL M Steel Polyethylene Wax mm kg/1000m kg/1000m 15.3 ≥ 1187 1093 ≥ 82 ≥ 12 15.7 ≥ 1266 1172 ≥ 82 ≥ 12 - Standard: FprEN 10337 or NF A35-035
- Zinc coating: 190 - 350 g/m2
- Grade of polyethylene: HDPE80 / HDPE100 / HDPE100+ or others on request
- HDPE sheath thickness: min. 1,5 mm
- Friction resistance: min. 1000 N/30 cm
Special types on request.
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Prestressing steel strand, 7 wire, greased and sheathed
Nominal diameter of strand Total mass Mass of components DL M Steel Polyethylene Grease mm kg/1000m kg/1000m
12.5 ≥ 825 ≥ 849 730 ≥ 65 ≥ 89 ≥ 30 12.9 ≥ 885 ≥ 908 785 ≥ 68 ≥ 91 ≥ 32 15.3 ≥ 1212 ≥ 1236 1093 ≥ 79 ≥ 103 ≥ 40 15.7 ≥ 1297 ≥ 1329 1172 ≥ 82 ≥ 114 ≥ 43 Prestressing steel strand, 7 wire compacted, greased and sheathed
Nominal diameter of strand Total mass Mass of components DL M Steel Polyethylene Grease mm kg/1000m kg/1000m 15.2 ≥ 1403 ≥ 1427 1289 ≥ 79 ≥ 103 ≥ 35 - Grade of polyethylene: HDPE80 / HDPE100 / HDPE100+ or others on request
- HDPE sheath thickness: min. 1,5 mm or min. 2,0 mm
- Friction resistance: max. 60 N/m
Special types on request.
Multiple sheathing on request.
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- Wire surface
- uncoated
- galvanized
- Strand outer wires
- round
- compacted
- Protective fillers
- grease
- wax
- Types of sheathing
- round
- tightly extruded (following the outer contour of the strand)
- Designs possible according to customer specifications
- sheath color
- labelling
- sheath wall thickness
- multiple sheathing
- Delivery forms
- reelless coil
- wooden ree
- Wire surface
Your advantages with voestalpine Wire Technology
- Superior corrosion protection through galvanization, wax filling, and plastic sheathing
- High mechanical strength for demanding prestressing applications
- Wide range of diameters and precise multi-length options
- Multi-layer sheathing for added safety and durability
- Compacted strands for optimized force transmission
FAQ: Frequently asked questions about defcor®
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defcor® is a product line of sheathed prestressing strands designed for demanding applications. These strands offer high tensile strength and advanced corrosion protection, making them ideal for structural prestressing in challenging environments.
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Options include zinc coating, wax filling, and plastic sheathing (HDPE80 / HDPE100 / HDPE100+), depending on customer requirements.
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defcor® strands are typically manufactured according to FprEN 10337 or NF A35-035. Additional specifications are available upon request.
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Common nominal diameters include 15.3 mm and 15.7 mm. Other sizes can be provided upon request.
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The combination of premium raw materials, state-of-the-art manufacturing, comprehensive quality control, and decades of experience ensures consistent performance and reliability.
Do you have a new project that requires sheathed prestressing strands?
Our experts will be happy to advise you and find the right solution for your requirements!
