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Sand Casting Parts Series 6
Setting new benchmarks for precision sand casting performance, our High-Accuracy Low-Defect Sand Casting Parts (Series 6) deliver industry-leading dimensional precision and consistent quality for medical device manufacturers, optical equipment brands, and aerospace business clients. Cast from premium aluminum alloy (ASTM B26 Grade A356.2) and magnesium alloy (ASTM B199 AZ91D), these components combine the cost efficiency of sand casting with near-net-shape precision, ideal for precision-critical applications that demand tight tolerances, lightweight construction, and strict regulatory compliance. Every precision sand casting part we produce adheres to ISO 13485, AS9100D, and IATF 16949 standards, with full material traceability and 100% quality inspection for critical features.
Our high-precision sand casting components achieve CT7-CT8 dimensional tolerance (±0.1-0.2mm for 100mm features), enabled by CNC-machined metal patterns and automated robotic mold alignment with a positioning error ≤0.05mm. We maintain porosity ≤0.5% through advanced vacuum-assisted sand casting technology, paired with 100% X-ray inspection for all critical features, delivering a defect rate 80% lower than the industry average for sand casting processes.
Our aluminum A356.2 alloy castings deliver a tensile strength of 310MPa and 8% minimum elongation, with T6 heat treatment to enhance fatigue resistance to 10⁷ cycles at 150MPa. For ultra-lightweight applications, our magnesium AZ91D alloy castings offer a density of 1.8g/cm³, 60% lighter than steel, with chromate conversion coating to enhance corrosion resistance, passing 500 hours of salt spray testing per ASTM B117 standards.
Our advanced 3D-printed sand core technology enables the production of 0.5mm fillets and 1mm ribs, a rare capability in sand casting, with a supported wall thickness range of 3-30mm for both lightweight structural components and load-bearing frames. We deliver an as-cast surface finish of Ra ≤6.3μm via zircon sand molds, with CNC machining available to achieve Ra ≤1.6μm for precision mating surfaces in optical and medical equipment.
Parameter | Specification |
Standard Material Grades | ASTM B26 Grade A356.2 (Aluminum), ASTM B199 AZ91D (Magnesium) |
Dimensional Tolerance | CT7-CT8 (ISO 8062, ±0.1-0.2mm for 100mm features) |
Maximum Porosity | ≤0.5% |
As-Cast Surface Finish | Ra ≤6.3μm (Ra ≤1.6μm with CNC machining) |
Wall Thickness Range | 3-30mm |
Minimum Feature Resolution | 0.5mm fillets, 1mm ribs |
Corrosion Resistance | 500h salt spray (ASTM B117) with conversion coating |
Core Compliance Standards | ISO 13485, AS9100D, ASTM E8/E23/E18 |
As an industry-leading precision sand casting supplier for medical, optical, and aerospace business clients, we hold a patented robotic pattern alignment system that reduces mold displacement by 70%, enabling CT7 tolerance in sand casting—an industry-leading capability for the process. We implement 100% CMM inspection (accuracy ±0.02mm) for all critical dimensions, with statistical process control (SPC) for mold manufacturing to maintain consistent quality across production runs. We offer rapid precision prototyping with 5-day turnaround for 3D-printed sand molds, with a minimum order quantity of 1 piece, ideal for medical device development and aerospace prototyping projects.
Our high-accuracy sand casting parts serve three core precision-focused sectors: medical devices (surgical instrument handles, medical imaging equipment frames with biocompatible coating options), optical equipment (telescope mounts, lens brackets, optical instrument housings with low thermal expansion stability), and aerospace ground support (avionics brackets, camera mounts, satellite components certified to AS9100D). All parts are engineered to meet the strictest precision and regulatory requirements.
Yes, our proprietary precision sand casting process achieves CT7-CT8 dimensional tolerances (±0.1-0.2mm for 100mm features), with CNC machining available to reach even tighter tolerances for precision mating surfaces in optical and medical devices.
We are fully certified to ISO 13485 for medical device manufacturing and AS9100D for aerospace applications, with full material traceability and documentation to support your regulatory compliance requirements.
We deliver 3D-printed sand mold prototypes within 5 days, with low-volume production runs completed in 10-15 days, making us ideal for fast-track medical device development and aerospace prototyping projects.
