Metal Exponents Inc. delivers high-performance steel solutions essential to the Philippines’ advancing infrastructure, construction, and industrial landscapes.
A vital component of its structural inventory, steel strand provides a high-strength reinforcement medium engineered specifically for prestressed concrete systems. This material offers superior tensile capacity and long-term durability, ensuring maximum structural reliability for the most demanding load-bearing applications across the archipelago.
Steel strand is a high-strength steel cable composed of multiple cold-drawn steel wires helically wound together to form a durable tensioning component. Primarily designed for prestressed and post-tensioned concrete applications, steel strand enhances structural load capacity, minimizes cracking, and improves concrete performance under continuous mechanical stress.
Manufactured from high-carbon steel wire rods such as SWRH82B, steel strands undergo advanced drawing, stranding, and stabilization processes to achieve superior tensile strength, low relaxation, controlled elasticity, and reliable bonding with concrete systems.
Available in multiple diameters and strength classifications, steel strands are produced to meet stringent international standards for structural safety, precision, and long-term performance.
| Category | Details |
|---|---|
| Product Type | Prestressed concrete steel strand |
| Material Base | High-carbon steel wire rod (e.g., SWRH82B) |
| Manufacturing Process | Continuous wire drawing, stranding, stabilization treatment |
| Common Sizes | 12.7 mm, 15.2 mm, 15.7 mm |
| Tensile Strength | 1770 MPa – 1860 MPa |
| Tensility | ≥ 3.5% |
| Relaxation Rate | ≤ 2.5% per 1,000 hours |
| Key Performance Features | High tensile strength, low relaxation, steady elasticity, strong concrete adhesion |
| Structural Function | Prestressing and reinforcement |
| Compliance Standards | ASTM A416, BS 5896, GB/T 5224, EN 10138, JIS G3536 |
| Category | Wire Configuration | Key Characteristics | Size Range | Tensile Strength |
|---|---|---|---|---|
| 1×7 | 1 core + 6 wires | High rigidity, low elongation, stable load transfer | 12.7–15.7 mm | Up to 1860 MPa |
| 1×19 | 1 core + 18 wires | Better load distribution, controlled elongation | 12.7–15.7 mm | 1770–1860 MPa |
| 7×7 | 7 strands × 7 wires | Balanced strength and flexibility | 12.7–15.7 mm | 1770–1860 MPa |
| 7×19 | 7 strands × 19 wires | High flexibility, improved fatigue resistance | 12.7–15.7 mm | 1770–1860 MPa |
Steel strands are essential for high-performance structural systems requiring enhanced tensile reinforcement and long-term durability.