Grade Condition Thickness (mm) Tensile strength (Mpa) Elongation (%) BZn15‑20 M ≥0.3 ≥340 ≥35 BZn15‑20 Y2 ≥0.3 440~570 ≥5 BZn15‑20 Y ≥0.3 540~690 ≥1.5
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