Q: What material is DX51D made of?
A: DX51D is hot-dip galvanized low-carbon steel under EN standards. The base material is low-carbon steel (carbon ≤ 0.18%), which undergoes hot-dip galvanizing to form a dense zinc layer, emphasizing cold formability and corrosion resistance.
Q: What are the core performance parameters of DX51D?
A: Typical tensile strength 270-350MPa, elongation ≥ 22%, zinc layer commonly Z100/Z180/Z275 (100/180/275g/m²), suitable for cold working such as bending and stamping.
Q: What are the key differences between DX51D and ordinary carbon steel and stainless steel in medical applications?
A: It has stronger corrosion resistance than ordinary carbon steel (zinc layer cathodic protection); the cost is lower than 304/316 stainless steel, but it lacks the sterile chemical resistance of stainless steel and cannot be used in parts that come into direct contact with the human body or sterile media.
Q: What is the function of the zinc plating layer on the DX51D?
A: Dual protection: Physically isolates the material from air and moisture, preventing corrosion of the substrate; the zinc layer preferentially oxidizes, providing cathodic protection to the steel, and delaying rust even at damaged areas.
Q: Is the DX51D a medical-grade material?
A: It is not an implantable/contact-grade medical material and does not have ISO 10993 or other biocompatibility certifications; it is only suitable for non-contact structural components, housings, and auxiliary devices in medical equipment.