What are the mechanical property indicators for cold-rolled coils?

2025-09-15 10:13:12

The mechanical properties of cold-rolled coils serve as a crucial basis for evaluating their service performance. Key indicators include:

Tensile strength (σb), denoting the material's resistance to failure under tensile loading;

Yield strength (σs or Rp0.2), representing the stress at which plastic deformation commences;

Elongation (δ), indicating the relative elongation at fracture and reflecting plasticity; Hardness (e.g., HV, HRC), indicating the material's resistance to localised deformation; Cold bending performance, denoting the material's ability to withstand bending deformation at ambient temperatures, assessed via cold bending tests; Impact toughness, signifying the material's resistance to impact loads (particularly crucial for materials used in low-temperature environments). Mechanical property requirements vary across different grades and specifications of cold-rolled coils; selection should be based on specific application scenarios.