What type of steel product is DX51D coil?
A: DX51D coil generally refers to the DX51D series hot-dip galvanized steel coil, a continuous hot-dip galvanized flat steel coil produced according to European standard EN10327. "D" represents low-carbon steel for cold forming, "X" indicates the rolling state of the base material is not specified, and "51" is the steel grade number. Common suffixes such as +Z represent pure galvanization.
What are the common suffixes for DX51D coil?
A: Common suffixes each have specific meanings. +Z represents galvanized, +ZF represents galvanized iron, +ZA represents galvanized aluminum, and +AZ represents aluminum-zinc. Different suffixes correspond to steel coils with different coating materials.
What is the core chemical composition range of DX51D coil?
A: Carbon content not exceeding 0.18%, manganese content not exceeding 1.2%, phosphorus content not exceeding 0.12%, sulfur content not exceeding 0.045%, and silicon content not exceeding 0.5%.
What is the yield strength specification of DX51D coil?
A: The yield strength is typically between 140 and 300 MPa, with slight fluctuations possible between different production batches and storage periods.
What are the requirements for the tensile strength and elongation of DX51D coil?
A: The tensile strength is generally not less than 290 MPa, and the elongation after fracture under normal conditions is not less than 26%. If the thickness is ≤0.7 mm, the elongation is allowed to decrease by 2%; if the thickness is ≤0.5 mm, the elongation is allowed to decrease by 4%.