According to SMM, the operating rate of the copper plate/sheet and strip industry in March 2025 was 69.14%, up 12.67 percentage points MoM, down 3.93 percentage points YoY, and 4.03 percentage points ...

In cupping tests on sheet metal a spherical drawing punch is pressed into a clamped metal sheet until a crack appears. The cupping test is used to assess drawing formality. Hole expansion tests - In ...