GB/T 5027-2025 "Determination of plasticity strain ratio (r value) of metal sheets and thin strips" specifies the determination method of plasticity strain ratio (r value) of metal sheets and thin strips. The standard covers the test principle, sample preparation, instrument requirements, test procedures and result calculation. It is suitable for evaluating the anisotropic characteristics of materials during plastic deformation, and provides a unified technical basis for the molding process design, quality control and performance research of metal sheet strips.
| Status | Incoming |
|---|---|
| CCS | H23 | ICS | 77.040.10 |
| Release Date | 2025-06-30 00:00:00 | Implementation Date | 2026-01-01 00:00:00 |