1x19 21.8mm 1860 MPa Prestressed Concrete Steel Strand – High-Strength, Durable, and Reliable for Modern Infrastructure
Engineered for demanding structural applications, the 1x19 21.8mm 1860 MPa PC Strand is a premium Prestressed Steel solution designed to deliver exceptional tensile strength, fatigue resistance, and long-term durability in high-load environments. Comprising 19 individual high-strength wires arranged in a single-layer configuration, this strand offers superior load distribution compared to traditional 1x7 strands—making it ideal for bridges, high-rise buildings, industrial floors, and precast concrete elements where extended spans and heavy service loads are critical.
This product adheres to internationally recognized standards such as ASTM A416, EN 10138, and GB/T 5224-2014, ensuring compliance with global engineering specifications. Its ultimate tensile strength of 1860 MPa provides an outstanding balance between performance and safety, while its optimized lay length (12–18 times the diameter) ensures consistent stress transfer during tensioning operations. Whether used in post-tensioned or pretensioned systems, this strand enhances structural integrity, reduces deflection, and extends service life under extreme conditions—including exposure to aggressive chemical environments or harsh weather patterns.
Key features include precise dimensional tolerances (+0.40/-0.15 mm), a nominal cross-sectional area of 313 mm², and a weight of approximately 2482 kg per 1000 meters. The minimum breaking load reaches 583 kN, with a proof load at 0.2% offset of 513 kN, reflecting its ability to maintain performance even under prolonged stress. With a minimum elongation of 3.5% over a 500 mm gauge length and low relaxation values (≤2.5% after 1000 hours at 70% of specified breaking load), this strand supports efficient design practices and minimizes long-term creep effects in reinforced concrete structures.
Available in uncoated, galvanized, or epoxy-coated variants, the strand offers flexibility for corrosion protection in coastal, humid, or chemically aggressive settings. While primarily intended for construction projects requiring enhanced stability—such as highway overpasses, marine piers, parking structures, and large-span roof systems—it also serves well in seismic retrofitting and infrastructure renewal initiatives worldwide. Its compatibility with standard anchorage systems makes installation straightforward for engineers and contractors alike.
Users consistently report improved structural efficiency, reduced maintenance needs, and greater confidence in long-term performance when specifying this strand. It is particularly favored by civil engineers working on transportation networks, commercial developments, and public utilities where reliability, code compliance, and lifecycle cost-effectiveness are paramount.
Common inquiries often focus on how this strand compares to other configurations like 1x7 or 1x15, or whether it meets specific project requirements such as freeze-thaw resistance or chloride ion penetration thresholds. In response, experts confirm that the 1x19 structure distributes internal stresses more evenly across all wires, minimizing localized fatigue points—a key advantage over smaller wire counts. Additionally, its robust mechanical properties make it suitable for use in both new builds and rehabilitation projects aiming for modernization without compromising safety margins.
For professionals seeking a reliable, globally certified prestressing solution that balances strength, consistency, and adaptability, the 1x19 21.8mm 1860 MPa PC strand stands out as a top-tier choice—proven through decades of successful application across diverse climates and geographies.
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