What This Page Covers: Aerospace-Grade CNC Machining for Aluminum and Titanium This is CNC machined aerospace parts in aluminum (7075-T6, 6061-T6) and titanium (Ti-6Al-4V, Grade 5), produced by BQUQ,
Get a quote
-
English
- sc@bquq.com
What This Page Covers: Aerospace-Grade CNC Machining for Aluminum and Titanium This is CNC machined aerospace parts in aluminum (7075-T6, 6061-T6) and titanium (Ti-6Al-4V, Grade 5), produced by BQUQ,
This is CNC machined aerospace parts in aluminum (7075-T6, 6061-T6) and titanium (Ti-6Al-4V, Grade 5), produced by BQUQ, a 20-year precision manufacturing factory in Dongguan, China. You get tolerances of ±0.005 mm, runout under 0.01 mm, and surface finish down to Ra 0.4 µm — all verified on a CMM before shipment. Typical lead time is 7 days for prototypes, 15 days for production runs, and we hold a hardness range of HRC 20–45 depending on material and heat treatment.
We are not a trading company. We run 32 CNC machining centers (3-axis, 4-axis, 5-axis) in-house, plus stamping and spring lines. That means one purchase order covers machined brackets, spring-loaded latches, and heat sinks — all inspected to AS9102 standards if you request it. Every part ships with a full dimensional report, material certificate, and surface finish trace.
Aluminum 7075-T6 offers a yield strength of 503 MPa and fatigue resistance that suits airframe brackets and interior structural parts. Titanium Ti-6Al-4V gives you a strength-to-weight ratio 40% better than steel, with corrosion resistance that handles fuel and hydraulic fluid exposure. We machine both on the same 5-axis centers, but we use different tool paths and coolant concentrations for each — a lesson we learned from our CNC cutting tool selection guide, which explains why carbide end mills with TiAlN coating are mandatory for titanium at speeds above 40 m/min.
For thin-wall titanium parts (0.8 mm wall thickness), we reduce spindle speed to 2,500 RPM and use trochoidal milling to keep heat out of the cut. This prevents work-hardening and chatter marks. For aluminum, we run at 15,000 RPM with high-pressure coolant through the spindle. Both materials are cut to the same tolerance, but your drawing must specify which one you need — we cannot swap materials without a new quote, because the thermal expansion rates differ by 50%.
Every batch of CNC machined aerospace parts goes through a three-step inspection. First, a coordinate measuring machine (CMM) checks critical dimensions against your GD&T callouts — we hold true position within 0.01 mm. Second, a Rockwell hardness tester verifies HRC values, especially after heat treatment (T6 for aluminum, solution-treated and aged for titanium). Third, a profilometer measures Ra surface finish on sealing faces and mating surfaces.
We do not skip inspection for small orders. Even a single prototype gets the same CMM report as a 5,000-piece production run. You receive a PDF with all measured values, a pass/fail summary, and photos of the part on the CMM fixture. If any dimension is out of tolerance, we re-machine or reject the batch — we never ship a nonconforming part. For a deeper look at how we define and control tolerances, read our CNC machining tolerances guide.
We stock raw material in four grades: 6061-T6 (cost-effective, good weldability), 7075-T6 (highest strength aluminum), Ti-6Al-4V Grade 5 (standard aerospace titanium), and Ti-6Al-4V ELI (for medical-adjacent or cryogenic applications). For aluminum, we can also supply 2024-T3 and 7050-T7451 if your drawing specifies them — these are common for wing skins and fuselage frames. For titanium, we offer Grade 2 (commercially pure) for non-structural parts that need formability.
Heat treatment is performed at certified partner facilities within 5 km of our factory. We do not run heat treat in-house because the furnaces require NADCAP certification, which we prefer to outsource. But we control the process: we specify the solution treatment temperature (e.g., 490°C for 7075), the quench delay (under 10 seconds), and the aging cycle (120°C for 24 hours). After heat treatment, we re-machine any surfaces that might have distorted — typically thin ribs or flanges. Final hardness is HRC 20–25 for 6061-T6, HRC 28–35 for 7075-T6, and HRC 30–40 for Ti-6Al-4V.
Our 5-axis CNC centers (DMG MORI and Mazak, 5 units) allow us to machine undercuts, angled holes, and curved surfaces in a single clamping. This is critical for aerospace parts like turbine blade roots, manifold blocks, and structural brackets with compound angles. With 3-axis only, you would need five to eight setups, each introducing positioning error. With 5-axis, we hold runout under 0.01 mm between features that are machined at different orientations.
We also use 4-axis indexing for cylindrical parts like actuator housings and valve bodies. The fourth axis lets us rotate the part to machine radial holes and slots without re-fixturing. For parts longer than 600 mm, we switch to a gantry mill with a 1,200 mm travel. Maximum part size on our 5-axis centers is 800 mm x 600 mm x 500 mm. If your part exceeds that, we can discuss splitting it into two pieces and bolting or welding — but that adds a joint, so we only recommend it for non-critical structures.
Standard machined finish is Ra 0.8 µm, which is acceptable for most interior brackets. For sealing surfaces, we can achieve Ra 0.4 µm with a fine boring or grinding pass. For cosmetic exterior parts, we offer anodizing (Type II clear or hard coat to MIL-A-8625), alodine conversion coating, and bead blasting to a uniform matte appearance. Titanium parts can be passivated to AMS 2700 or coated with a dry film lubricant like MoS2 for threaded fasteners.
We do not apply paint or primer — that is typically done by your tier-one assembler. But we can deburr every edge (0.1 mm max radius), break sharp corners, and add laser-engraved part numbers and date codes. If you need a specific surface finish for a composite bonding application, we can increase surface roughness to Ra 1.6–3.2 µm via grit blasting — this improves adhesive bond strength by up to 30% compared to a smooth machined surface.
Over the past five years, we have shipped over 200,000 aerospace parts. Examples include: a 7075-T6 hinge bracket for a business jet aileron (240 mm x 80 mm x 6 mm, 14 holes with true position 0.05 mm), a Ti-6Al-4V hydraulic manifold block (150 mm cube, 22 cross-drilled holes, 0.8 mm wall between ports), and a 6061-T6 avionics chassis (400 mm x 300 mm x 120 mm, with 2 mm thin walls and 48 tapped holes). All parts passed first-article inspection on the first attempt.
We also machine spring-loaded components — a combination of CNC machining and our in-house stamping and spring coiling. For example, a landing gear door latch uses a machined aluminum body, a stamped steel lever, and a torsion spring we coil ourselves. This reduces your supplier count from three to one, and cuts logistics cost by roughly 15% per part. We have the full BOM in our ERP, so you can track every component from raw material to final assembly.
For a single prototype (no MOQ), budget $150–$500 depending on material and complexity. For production runs of 100–500 pieces, per-unit price drops 40–60% because setup cost is amortized. Lead time is 7 days for up to 10 prototypes, 15 days for 100–500 pieces, and 25 days for 1,000+ pieces. Rush orders (3-day delivery) are possible for machined aluminum parts — we charge a 30% premium and reserve a dedicated spindle for your job.
We quote firm prices, not estimates. We hold the price for 30 days from quote date. If your drawing changes after the quote, we re-quote within 24 hours. Payment terms are 50% deposit, 50% before shipment for new customers; net 30 is available after three paid orders. We ship via FedEx, DHL, or your freight forwarder, with Incoterms EXW, FOB, or DDP — your choice.
| Specification | Value / Range |
|---|---|
| Materials | Aluminum 6061-T6, 7075-T6, 2024-T3, 7050-T7451; Titanium Grade 5 (Ti-6Al-4V), Grade 2, ELI |
| Max part size | 800 mm x 600 mm x 500 mm (5-axis); 1200 mm length (gantry mill) |
| Min wall thickness | 0.8 mm (titanium), 0.5 mm (aluminum) |
| Hardness range | HRC 20–25 (6061-T6), HRC 28–35 (7075-T6), HRC 30–40 (Ti-6Al-4V) |
| Dimensional tolerance | ±0.005 mm (machined), ±0.01 mm (true position on GD&T) |
| Surface finish (Ra) | 0.4 µm (sealing), 0.8 µm (standard), 1.6–3.2 µm (bonding prep) |
| Runout | ≤0.01 mm between coaxial features |
| Lead time | 7 days (prototype), 15 days (100–500 pcs), 25 days (1000+ pcs) |
| MOQ | No MOQ — single prototype accepted |
| Inspection reports | CMM dimensional report, hardness certificate, surface finish measurement — included free |
We are a 20-year-old factory in Dongguan, part of the Pearl River Delta manufacturing cluster. We have 120 employees, 32 CNC machines, and an in-house QC lab with a CMM, profilometer, and hardness tester. Our export ratio is 85%, with customers in the US, Germany, and Japan. We are ISO 9001:2015 certified and can run AS9102 first-article reports on request. We are not the cheapest factory in China — we are the most predictable one.
Made in China does not mean low quality. We prove that with every shipment: a full inspection report, a material certificate, and a 30-day warranty against defects. If a part is nonconforming due to our error, we re-machine it at no cost and cover the expedited shipping. That is our written policy, not a verbal promise.
No MOQ — we machine a single prototype for $150–$500, and you can scale to 1,000+ pieces without re-quoting.
Yes, we machine entirely from your 2D or 3D CAD file (STEP, IGES, or PDF with GD&T), and we can suggest material or tolerance changes if they reduce cost without affecting function.
We inspect the first article 100% on CMM, then every 10th part during the run, and the last 5 parts before packing — all results are in the shipment report.
For aluminum parts, 3-day delivery is available at a 30% premium; for titanium, 5 days is the fastest we can guarantee without risking quality.
Send your drawing in STEP or PDF format to sc@bquq.com. We will reply within 12 hours (usually faster — our average response time is 4 hours) with a firm price, lead time, and a DFM (design for manufacturability) note if we see any risk. For urgent projects, WhatsApp +86 13713157787. No MOQ, no pressure — just a clear, itemized quote for your aerospace part.
| Parameter | Capability |
|---|---|
| Materials | AL6061/7075, SUS303/304/316, 45# steel, T2 copper, H59 brass, POM, PEEK, nylon |
| Tolerance | ±0.005mm standard, ±0.003mm on request |
| Machines | 3/4/5-axis CNC, turn-mill, Swiss lathe |
| Surface | Anodizing, nickel, zinc, passivation, sandblast, polish |
| Size Range | Max 400 x 300 x 200 mm |
| Prototype | 72 hours, no MOQ on samples |
| Inspection | Full report per batch, CMM data on request |
