What physical testing items do you need to do for cold rolled steel?
2023-02-22 01:06:43
Stretching: elongation after fracture, yield strength, tensile strength, Rp0.2, and some automotive panels to be bake hardened.
Bending: V-bend, U-bend, 180-bend, T-bend.
Hardness: Rockwell hardness (including surface), microhardness.
Metallography: grain size, inclusions, and structure.
Simulated stamping: Simulating automotive sheet stamping.
Molding test: cup protrusion, reaming, ball punching, double-sided ball punching.
Roughness: Surface roughness.
Salt spray: salt spray test.
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