The sheathed prestressing steel strands in the defcor® product line from voestalpine Wire Technology are specially designed for high-stress applications, such as bridge construction, large container construction, or prestressing wind turbines. defcor® stands for maximum reliability, top quality, and innovative technology.
As an integrated supplier covering the entire value chain, we offer tailor-made solutions—individually tailored to the requirements of your projects.
✔ 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!
