Can the specifications of DX51D+Z steel coils be customized?
A: Yes, they can be customized. Standard thickness is 0.1-2mm, width is 600-1500mm, and coil weight is 2-15 tons. Size and weight can be adjusted according to customer requirements.
What is the difference between DX51D+Z and electro-galvanized steel coils?
A: DX51D+Z is hot-dip galvanized, with a thicker coating (corresponding to a zinc layer weight of 20-275g/m²), providing strong corrosion resistance; electro-galvanized steel has a thinner coating (5-20μm), a smoother surface, and is suitable for precision parts.
What are the mechanical properties of DX51D+Z steel coils?
A: It has moderate strength, good tensile strength, impact toughness, and excellent formability, adaptable to various processing methods such as stamping and bending. It also has good resistance to hydrogen embrittlement.
What causes wavy edges and warping in DX51D+Z steel coils?
A: This is often caused by insufficient rolling precision, uneven tension control, or uneven temperature distribution during cooling, and is a common dimensional and morphological defect.
Can I raise a quality objection for a DX51D+Z with dimensional discrepancies?
A: Yes, if the actual dimensions exceed the contractual agreement or relevant standards, you can raise a quality objection with the supplier or steel mill according to the contract procedure, based on the quality assurance certificate, inspection report, and other supporting documents.