aluminum heat sink: 6063-T5 aluminium, 0.4 mm fins at 2.5 mm pitch, 0.05 mm over 100 mm flatness, 0.48 K/W thermal resistance. MOQ 100 pcs, ships in 7 workin...
aluminum heat sink: 6063-T5 aluminium, 0.4 mm fins at 2.5 mm pitch, 0.05 mm over 100 mm flatness, 0.48 K/W thermal resistance. MOQ 100 pcs, ships in 7 workin...
Get a Fast Quote for This Part
Send us your drawing / quantity / material — reply within 24h.
The aluminum heat sink uses 2.5 mm fin pitch and 0.4 mm stock in 6063-T5 aluminium, holding 0.05 mm flatness over 100 mm on the mounting face. Thermal resistance is 0.48 K/W, verified by CMM plus granite flatness plate per lot. Stamping delivers ±0.05 mm pitch across a 120,000 pcs run with a 25 s cycle on a 250 T press.
The aluminum heat sink uses 2.5 mm fin pitch and 0.4 mm stock in 6063-T5 aluminium, holding 0.05 mm flatness over 100 mm on the mounting face. Thermal resistance is 0.48 K/W, verified by CMM plus granite flatness plate per lot. Stamping delivers ±0.05 mm pitch across a 120,000 pcs run with a 25 s cycle on a 250 T press.
The aluminum heat sink combines 2.5 mm fin pitch with 0.4 mm stock in 6063-T5 aluminium, so 120 x 80 x 50 mm parts keep 0.05 mm over 100 mm on the mounting face. Thermal resistance is 0.48 K/W, measured at CMM plus granite flatness plate per lot.
Stamping gives a repeatable 0.4 mm fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within ±0.05 mm across a 120,000 pcs run.
Because the base and fins are pressed as one piece, there is no brazed joint to fail. 0.05 mm over 100 mm flatness on the mounting face is held directly from the tool, which keeps thermal interface contact uniform.
A single 250 T stroke forms the whole aluminum heat sink, so part cost stops scaling with complexity. Tooling runs ±0.05 mm, and the 25 s cycle feeds a 120,000 pcs line.
The one-piece geometry removes the adhesive layer found in two-part coolers, cutting the thermal path. Nothing sits between 6063-T5 aluminium and the airflow except the stamped surface itself.
Stamped construction tolerates batch variation better than extrusion: die wear shows up first as a measurable shift in fin pitch, which inspection catches at CMM plus granite flatness plate rather than in the field.
The standard material is 6063-T5 aluminium, supplied with black anodize Type II, 10-15 µm. For applications where 1U server and AI accelerator exposure is a concern, we recommend the passivated route; where conductivity matters more than weight, copper C110 raises thermal performance and roughly doubles unit mass.
General dimensions run to ±0.15 mm, with critical features such as ±0.05 mm on base thickness held separately. Formed geometry inherits tooling repeatability of ±0.05 mm, and hole position is held to ±0.10 mm. Tighter classes need an extra press operation, so it is worth deciding before tooling rather than after.
Flatness is checked on a granite surface plate, 20 °C against a 0.05 mm over 100 mm limit, and fin pitch is verified optically at ±0.05 mm. Reports go out with each lot.
Each batch carries a CMM report from CMM plus granite flatness plate. We record flatness, pitch, base thickness and hole position, and flag anything outside ±0.15 mm before it leaves the line.
Incoming 6063-T5 aluminium is checked for thickness and hardness before it enters the press. After forming, CMM plus granite flatness plate confirms 0.05 mm over 100 mm and 2.5 mm against the drawing.
Related reading: Precision Stamped Electronic Brackets Collection.
Final containment is PE bag + honeycomb carton, 15 kg per carton. Every carton is labelled with lot, quantity and inspection status, and the record is kept for 10 years against the ISO9001 file.
See also: Precision CNC Components in Industrial Robotics: Case Study and Tolerances.
Where a aluminum heat sink runs at 1U server and AI accelerator volumes, part-to-part consistency decides field returns. ±0.05 mm on a 120,000 pcs run keeps the thermal curve inside one band.
In 1U server and AI accelerator, the base usually doubles as the mounting interface. 1.0 mm with 0.05 mm over 100 mm flat gives a stable surface for the 1U server and AI accelerator thermal pad.
Learn more about Contact Us.
Designers working on 1U server and AI accelerator ask for flatness before they ask for thermal data, because 1U server and AI accelerator assembly is automated and a non-flat base stops the line.
Further technical detail: What Makes Valve Springs the Precision Engine Component Behind Performance?.
1U server and AI accelerator designs often run a 2.0 m/s forced-air path. 0.48 K/W at ΔT = 60 K, natural convection means 1U server and AI accelerator can hold its target with fan power below the acoustic limit.
| Parameter | Value / Range |
|---|---|
| Material | 6063-T5 aluminium |
| Fin thickness | 0.4 mm |
| Fin pitch | 2.5 mm |
| Fin height | 50 mm |
| Base thickness | 1.0 mm |
| Base flatness | 0.05 mm over 100 mm |
| Thermal resistance | 0.48 K/W |
| Thermal test condition | ΔT = 60 K, natural convection |
| Surface finish | black anodize Type II, 10-15 µm |
| Size range | 120 x 80 x 50 mm |
Every lot is inspected with CMM plus granite flatness plate, and the report is included in the shipment. We check 0.05 mm over 100 mm, 2.5 mm, 1.0 mm and hole position against ±0.15 mm. Lot traceability from coil to carton is kept for 10 years.
6063-T5 aluminium is the standard choice. For 1U server and AI accelerator in a corrosive environment we specify 6063-T5 with black anodize Type II, 10-15 µm; for the highest conductivity we move to copper C110, which raises cost and weight but drops thermal resistance by roughly half at the same envelope.
General dimensions run to ±0.15 mm; critical ones such as ±0.05 mm on base thickness are held separately. Formed features inherit tooling repeatability of ±0.05 mm. If your drawing needs tighter, tell us before tooling so we can plan the extra press operation.
On 6063-T5 aluminium at normal press tonnage, expect a tooling life of roughly . At 120,000 pcs that is 6 to 12 months. We keep spare die sets on site for 1U server and AI accelerator programs, which removes the wait if wear shows up in the flatness record.
Yes. Send your enclosure airflow, inlet temperature and the heat load to be dissipated, and we will run a steady-state model and return a suggested 0.4 mm and 2.5 mm combination. That usually saves one tooling iteration.
Recommended reading: What Are the Main Types of Household and Furniture Springs?.
Our 1U server and AI accelerator experience runs back to the first tooling programme in 2015. That history is why the standard black anodize Type II, 10-15 µm and ±0.15 mm are conservative rather than optimistic.
Tooling is built in-house, which is how ±0.05 mm is held across a 120,000 pcs programme rather than drifting part by part.
Production runs on 25 s cycles with in-line vision on 0.05 mm over 100 mm. That is what keeps a 120,000 pcs commitment credible in peak season.
Request a quote: sc@bquq.com | WhatsApp +86 13713157787 | Dongguan, China
Compare it with What Are the New Thermal Interface Material Trends and Market Growth for 2026?.
| Parameter | Value / Range |
|---|---|
| Material | 6063-T5 aluminium |
| Tolerance | ±0.05 mm fin pitch; 0.05 mm flatness over 100 mm |
| Lead time | Not specified in excerpt |
| MOQ | Not specified in excerpt |
| Capacity | 120,000 pcs run; 25 s cycle on 250 T press |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped one-piece heat sink | Repeatable 0.4 mm fin profile, high-volume runs | Tooling wear shifts fin pitch, caught by CMM inspection |
| Extruded heat sink | Simple constant cross-sections | Cannot hold 0.4 mm fin profile; batch variation from die wear |
| Two-part bonded cooler | Complex geometries needing separate base and fins | Adhesive layer adds thermal resistance and a joint that can fail |
| Stage | Control | Record |
|---|---|---|
| Stamping | 250 T single stroke forms whole part; ±0.05 mm tooling | 25 s cycle; 120,000 pcs line |
| Fin profile | Die forms every fin in one stroke; pitch within ±0.05 mm | Measured across run |
| Flatness | 0.05 mm over 100 mm on mounting face held from tool | CMM plus granite flatness plate per lot |
| Thermal performance | 0.48 K/W thermal resistance | CMM plus granite flatness plate per lot |
| Batch variation | Die wear shows as measurable fin pitch shift | Inspection catches at CMM plus granite flatness plate |
Thermal resistance is 0.48 K/W, measured at CMM plus granite flatness plate per lot. This value applies to the 120 x 80 x 50 mm part with 2.5 mm fin pitch and 0.4 mm stock in 6063-T5 aluminium.
Related reading: Compression Spring End Types: Closed, Ground, Open and When Each Matters.
The mounting face holds 0.05 mm over 100 mm flatness directly from the tool. This keeps thermal interface contact uniform. The 120 x 80 x 50 mm part maintains this tolerance without secondary machining.
Stamping delivers 2.5 mm fin pitch with 0.4 mm stock in 6063-T5 aluminium. The die forms every fin in one stroke, so pitch stays within ±0.05 mm across a 120,000 pcs run. Extrusion cannot hold this 0.4 mm fin profile.
See also: Hydraulic System Components: Precision Manufacturing Case Study for OEM Engineers.
Stamping gives a repeatable 0.4 mm fin profile that extrusion cannot hold. The one-piece base and fins eliminate brazed joints, and die wear shows first as a measurable fin pitch shift, which inspection catches at CMM plus granite flatness plate per lot.
A single 250 T stroke forms the whole aluminum heat sink in a 25 s cycle. Tooling runs ±0.05 mm, feeding a 120,000 pcs line. Part cost stops scaling with complexity because the one-piece geometry removes the adhesive layer found in two-part coolers.
Yes. The one-piece stamped geometry removes the adhesive layer found in two-part coolers, cutting the thermal path. Nothing sits between 6063-T5 aluminium and the airflow except the stamped surface itself, supporting the 0.48 K/W thermal resistance.
Stamped construction tolerates batch variation better than extrusion. Die wear shows up first as a measurable shift in fin pitch, which inspection catches at CMM plus granite flatness plate per lot. This maintains ±0.05 mm pitch across a 120,000 pcs run.
Learn more about What Is Spring Index and How Does It Affect Spring Design?.
| Parameter | Value / Range |
|---|---|
| Material | 6063-T5 aluminium |
| Tolerance | ±0.05 mm pitch; 0.05 mm flatness over 100 mm |
| Lead time | Not specified in article |
| MOQ | Not specified in article |
| Capacity | 120,000 pcs run; 25 s cycle on 250 T press |
| Option | Best for | Trade-off |
|---|---|---|
| Stamped one-piece heat sink | High-volume runs requiring repeatable 0.4 mm fin profile | Tooling runs ±0.05 mm; limited to stamping geometry |
| Extruded heat sink | Simple profiles with lower tooling cost | Cannot hold 0.4 mm fin profile as repeatably as stamping |
| Brazed heat sink | Complex geometries with separate base and fins | Brazed joint can fail; not one-piece |
The aluminum heat sink uses a 2.5 mm fin pitch and 0.4 mm stock in 6063-T5 aluminium. This combination is held within ±0.05 mm pitch across a 120,000 pcs run, ensuring consistent thermal performance.
Further technical detail: Custom Copper Skived Fin Heatsinks.
Thermal resistance is 0.48 K/W, verified by CMM plus granite flatness plate per lot. This value is achieved with the 2.5 mm fin pitch and 0.4 mm stock in 6063-T5 aluminium.
Recommended reading: nvme heat sink.
The mounting face holds 0.05 mm flatness over 100 mm. This is held directly from the tool, which keeps thermal interface contact uniform and is verified by granite flatness plate per lot.
Stamping delivers a 25 s cycle on a 250 T press, feeding a 120,000 pcs line. Tooling runs ±0.05 mm, so pitch stays within ±0.05 mm across the entire run.
Compare it with What Are the Best Thermal Solutions for EV Charger Cooling?.
Stamping gives a repeatable 0.4 mm fin profile that extrusion cannot hold: the die forms every fin in one stroke, so pitch stays within ±0.05 mm across a 120,000 pcs run. Also, the one-piece geometry removes brazed joints.
The base and fins are pressed as one piece, so there is no brazed joint to fail. This one-piece geometry is formed in a single 250 T stroke, ensuring structural integrity and uniform thermal contact.
The heat sink uses 6063-T5 aluminium, which provides good thermal conductivity and formability for stamping. The 0.4 mm stock and 2.5 mm fin pitch are optimized for the 250 T press process.
| Parameter | Specification |
|---|---|
| Material | 6063-T5 aluminium |
| Fin thickness | 0.4 mm |
| Fin pitch | 2.5 mm |
| Fin height | 50 mm |
| Base thickness | 1.0 mm |
| Base flatness | 0.05 mm over 100 mm |
| Thermal resistance | 0.48 K/W |
| Surface finish | black anodize Type II, 10-15 µm |
| Monthly capacity | 120,000 pcs |
| MOQ (prototype) | 100 pcs |
| Lead time (production) | 20 working days |
| Size range | 120 x 80 x 50 mm |
