Import Aluminum Die Casting Simple Sanding Heat Sink — Buy in wholesale FOB from Supplier in China

This aluminum die casting simple sanding heat sink from Dongguan Jeefly Hardware Co. Ltd is a thermal management component fabricated from ADC12 (A383) aluminum die casting alloy, measuring 110 mm by 105 mm with a mass of 431.4 g. The part is produced through precision die casting, a high-pressure metal forming process that yields complex geometries with thin wall sections and excellent dimensional repeatability, followed by simple sanding surface treatment. These specifications position it for medium-power electronics applications where space constraints and cost efficiency govern design decisions.

ADC12 (equivalent to A383) is a widely adopted Al-Si-Cu die casting alloy containing approximately 9.5-11.5% silicon, 2.0-3.0% copper, and 0.3% maximum magnesium, offering good castability, moderate mechanical strength, and acceptable thermal conductivity of roughly 96 W/m·K in the as-cast condition. Simple sanding removes parting lines, ejector pin marks, and minor surface irregularities from the die casting process without applying additional coatings or anodised layers, leaving a matte, slightly textured finish that aids thermal radiation. The 431.4 g mass indicates substantial wall thickness and fin geometry relative to the modest 110 x 105 mm footprint, suggesting this sink is engineered for applications requiring significant thermal mass and moderate heat dissipation rather than ultra-compact consumer electronics.

Typical buyers include LED lighting manufacturers, industrial power supply designers, and automotive electronics suppliers seeking reliable thermal solutions for OEM production. The die casting process supports volume scaling with minimal per-unit cost variation once tooling is amortised, making this component suitable for programmes with projected annual volumes exceeding 10,000 pieces. Buyers should confirm cavity-specific tolerances, porosity acceptance criteria, and whether secondary machining is required for mounting holes or thermal interface surfaces. Surface treatment beyond simple sanding, such as anodising or nickel plating, should be discussed if the application demands enhanced corrosion resistance or electrical isolation.

Dongguan Jeefly Hardware Co. Ltd operates from Xiabian, Liaobu, Dongguan, Guangdong Province, a region with deep concentration in metalworking, mould fabrication, and electronics component manufacturing. The supplier's profile on the source listing indicates a harbour trust tier, though response rate and average response hours both register at zero, suggesting limited platform engagement or a dormant account. No verified certifications, production capacity figures, employee counts, or client references are stated in the available data.

The listing presents this supplier as a source for aluminum die cast thermal management components with emphasis on process capability (die casting plus surface finishing) rather than breadth of catalogue. Buyers should independently verify current production status, quality management system registration (such as ISO AISI/ISO 9001), and whether the company maintains in-house die casting presses or outsources casting to partner foundries. Direct communication through established channels is essential given the absence of recent response metrics.