Prestressed steel strand is a stranded steel cable composed of 2, 3, 7 or 19 high-strength steel wires, and is suitable for prestressed concrete and similar purposes after stress relief treatment (stabilization treatment).
The main characteristics of prestressed steel strand are high strength and good relaxation performance, in addition, it is relatively straight when unfolded. The common tensile strength grade is 1860 MPa, and there are also 1720, 1770, 1960, 2000, 2100 MPa and other strength grades. The yield strength of this steel is also high.