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Help CenterCNC Machined Casting for Automotive Applications in Aluminum Alloy A356
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Henan San Kuang Machinery Technology Co., Ltd., established in 2014, is a professional manufacturer specializing in high-precision CNC machined castings for automotive applications. Our flagship product — the CNC Machined Casting in Aluminum Alloy A356 — combines advanced casting techniques with multi-axis CNC machining to deliver components that meet the rigorous demands of the automotive industry. With a factory spanning 10,000–30,000 square meters and an annual export value of US$2.5–5 million, we serve global markets across North America, Europe, Asia, and beyond. Our commitment to quality is backed by multiple certifications including ISO9001, ISO/TS16949, OHSAS18001, and many others, ensuring every part meets international standards.
This product is designed for critical automotive systems such as engine blocks, transmission housings, suspension components, and structural brackets. The use of Aluminum Alloy A356 provides excellent strength-to-weight ratio, corrosion resistance, and thermal conductivity, making it ideal for lightweight vehicle designs. Our CNC machining capabilities allow for tight tolerances down to ±0.01 mm, ensuring perfect fit and function even in complex assemblies.
Key Features & Technical Specifications
- Material: A356 aluminum alloy (T6 heat treatment available)
- Manufacturing Process: Precision sand casting or die casting followed by 3-axis / 4-axis / 5-axis CNC machining
- Surface Finish: As-cast / anodized / powder coating / zinc plating (customizable)
- Dimensional Tolerance: ±0.01mm – ±0.05mm depending on feature
- Weight Range: 0.1 kg to 50 kg per piece
- Minimum Order Quantity: 100 pieces (pilot runs available for new projects)
- Lead Time: 25–35 days from approval of sample
Mechanical Properties of A356 Aluminum Alloy (Typical)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 276 | MPa |
| Yield Strength | 207 | MPa |
| Elongation | 5 | % |
| Hardness (Brinell) | 80 | HB |
| Thermal Conductivity | 171 | W/m·K |
Why Choose Our CNC Machined Casting?
- End-to-End Control: We handle everything from pattern making and casting to CNC machining and finishing, ensuring consistent quality at every stage.
- Advanced Machining Center: Equipped with 5-axis CNC machines, we can produce complex geometries with minimal setups, reducing lead time and cost.
- Automotive-Specific Expertise: Our team has over 10 years of experience supplying parts to Tier 1 and OEM automotive clients, understanding strict PPAP and FAI requirements.
- Customization Flexibility: We accept customer drawings (STEP, IGES, PDF) and provide free DFM feedback. Surface treatments, heat treatment, and assembly options are available upon request.
- Reliable Quality Assurance: All parts undergo 100% dimensional inspection (CMM, calipers, go/no-go gauges) and material verification (spectrometer) before shipment.
- Global Shipping Experience: We ship from multiple ports (Shanghai, Qingdao, Tianjin, Lianyungang) with reliable logistics partners, ensuring safe and timely delivery to your factory.
Trusted by international markets: Our products are exported to North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and Western Europe. We maintain long-term partnerships with automotive manufacturers and aftermarket distributors. With a dedicated team of 51–100 employees and a strong R&D department, we continuously improve our processes to meet evolving industry standards.
Partner with Henan San Kuang Machinery Technology — a company that has invested heavily in quality management systems (ISO9001, ISO/TS16949, OHSAS18001, etc.) and holds certifications like HACCP, SA8000, and TL9000 for specialized requirements. Our factory’s annual export value of US$2.5–5 million and multiple shipping ports guarantee competitive pricing and flexible logistics. Contact us today for a quotation or sample evaluation. We look forward to supporting your automotive casting needs with precision, reliability, and service excellence.
Frequently Asked Questions
Q1: What is the typical lead time for CNC machined castings?
A: Lead time depends on complexity and quantity. Standard MOQ (100pcs) takes about 25–35 days from tooling approval. Small prototype runs can be expedited to 15–20 days.
Q2: Can you provide samples before mass production?
A: Yes, we offer sample machining after tooling is prepared. Sample cost is deducted from the first mass production order. Shipping cost is borne by the client.
Q3: What surface treatments are available for A356 castings?
A: Common options include anodizing (clear, black, colored), powder coating, chrome plating, zinc plating, and as-cast with mechanical polishing. Specific requirements can be discussed.
Q4: How do you ensure dimensional accuracy for complex automotive parts?
A: We use in-process inspection with CMM, optical comparators, and custom gauges. Final inspection reports (including dimensional and material certificates) are provided with each shipment.
Q5: What file formats do you accept for custom designs?
A: We accept STEP, IGES, SLDPRT, DWG, DXF, and PDF. A 3D model is preferred for best accuracy. Free design for manufacturability (DFM) review is included.
Q6: Is your A356 material traceable?
A: Yes. All incoming raw material batches are tested with a spectrometer and assigned a lot number. Material test reports can be provided upon request.
Q7: Do you support PPAP (Production Part Approval Process) for automotive clients?
A: Absolutely. We are experienced with PPAP Level 3 submissions and can provide all required documentation including control plans, FMEA, and measurement system analysis (MSA).
Q8: What is your minimum order quantity for a new product?
A: Typically 100 pieces for the initial order, but we can negotiate for lower quantities (e.g., 50 pcs) for pilot projects. Higher volume orders receive better pricing.
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