→ISO15630-3 Steel for the reinforcement and prestressing of concrete - Test methods - Part 3: Prestressing steel

→1000 hours Metallic materials Tensile stress Relaxation Test

→1000 hours Steel strand Relaxation Test

→1000 hours Steel wires and bars Relaxation Test

→Standard Test Methods for Stress Relaxation Tests for Materials and Structures

→High tensile steel wire andstrand for the prestressingof concrete – Specification