What are the mechanical properties of DX52D?
A: Yield strength 140–300MPa, tensile strength 270–420MPa, elongation after fracture **≥26% (L₀=80mm); for thicknesses of 0.5–0.7mm, the lower limit of elongation drops to 24%**.
What are the chemical composition requirements for DX52D?
A: C≤0.12%, Si≤0.50%, Mn≤0.60%, P≤0.10%, S≤0.045%, Ti≤0.30%, low-carbon design ensures no cracking during cold working.
What is the standard thickness of the galvanized layer for DX52D?
A: Commonly used in construction: Z80–Z275 (80–275g/m²); outdoor/coastal applications recommended ≥Z180, indoor/dry environments ≥Z80, acceptance according to EN 10346.
What are the forming properties of DX52D?
A: Deep drawing grade, capable of 90° bending, roll forming, and complex stamping without cracking; r-value (plastic strain ratio) ≥ 0.8, n-value (work hardening index) ≥ 0.18, suitable for irregularly shaped architectural components.
What is the hardness range of DX52D?
A: Vickers hardness HV100–160, Brinell hardness HB90–150, Rockwell hardness HRB≤74, relatively soft, easy to process.