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eps-aluminum
EPS-Aluminum engineers and manufactures high-performance aluminum extrusion dies for heat sinks using premium H13 tool steel and advanced vacuum heat treatment. Designed for LED heat sinks, power electronics, automotive thermal management, and industrial cooling profiles, our extrusion tooling delivers precise profile geometry, extended die life, and high extrusion efficiency. We support both hollow dies and solid dies with full customization from 60 mm to 1000 mm die diameter. MOQ 1 set, lead time 15 working days.
| Parameter | Value / Range |
|---|---|
| Die Material | H13 hot work tool steel (equivalent to 1.2344, SKD61) |
| Hardness (After Heat Treatment) | HRC 48 – 52 (uniform across die body) |
| Heat Treatment Process | Vacuum hardening + triple tempering |
| Maximum Specific Pressure | Up to 8000 kN/m² (customizable based on extrusion press) |
| Expected Die Life (Shots) | 50,000 – 100,000+ extrusions under normal conditions* |
| Die Types Available | Hollow die, solid die, semi-hollow die, porthole die, bridge die |
| Extrusion Die Diameter | 60 mm – 1000 mm (custom) |
| Profile Shape Complexity | Simple flat heat sinks to multi-fin, thin-wall geometries |
| Surface Finishing | Precision wire-cut EDM, CNC machining, polishing |
| Inspection Method | 100% CMM dimensional inspection + visual check |
| MOQ | 1 set |
| Lead Time | 15 working days for standard orders |
*Die life may vary depending on aluminum alloy (6063, 6061, 6005, etc.), extrusion speed, and maintenance practices.
Our aluminum extrusion dies are manufactured from high-quality H13 tool steel, which provides excellent red hardness, thermal fatigue resistance, and wear resistance – essential for long-run heat sink extrusion. Each die undergoes:
Vacuum quenching to minimize oxidation and distortion
Triple tempering to achieve uniform HRC 48-52 and relieve internal stresses
Nitriding (optional) for increased surface hardness and improved aluminum flow
This ensures your heat sink extrusion die maintains consistent profile dimensions over tens of thousands of extrusions, reducing downtime and tooling replacement costs.
Depending on the heat sink design – from simple flat plates to complex asymmetric fins – we offer the most suitable die configuration:
Solid dies – for basic heat sink shapes without internal cavities.
Hollow dies (porthole / bridge dies) – for heat sinks with enclosed channels or multi-chamber designs.
Semi-hollow dies – for profiles with partially closed features.
Our engineering team optimizes die bearing length, feeder design, and welding chamber geometry to achieve balanced aluminum flow, reduce scrap, and improve extrusion speed.
We provide complete custom aluminum extrusion tooling based on your 2D drawing (DXF, DWG) or 3D model (STEP, IGES). Services include:
Die flow simulation (FEM analysis) to predict material flow and optimize bearing
Die design for thin-wall heat sink fins (≥0.8 mm fin thickness possible)
Modifications for high extrusion ratios (up to 80:1)
Weld-free die design for high-strength aluminum alloys
As a professional China extrusion die manufacturer, EPS-Aluminum has supplied custom aluminum extrusion dies to heat sink producers worldwide, including LED lighting, EV battery cooling, and renewable energy sectors.
Every aluminum extrusion die for heat sink passes strict quality control before shipment:
100% dimensional inspection using coordinate measuring machine (CMM)
Hardness test (HRC) at multiple points
Visual inspection for surface defects and wire-cut finish
Test extrusion report (available upon request for sample orders)
We issue a full inspection report with each die, ensuring traceability and compliance with your specifications.
Minimum order quantity: 1 set (suitable for prototyping and small-batch production)
Lead time: 15 working days for standard custom dies
Packaging: Anti-rust oil + foam protection + plywood case for safe export
Shipping: By sea, air, or express (DHL, FedEx, UPS)
If you need a reliable aluminum extrusion die for heat sink – whether standard or highly complex – EPS-Aluminum offers precision tooling with competitive pricing and fast delivery. Send your drawing or profile requirements to get a quotation within 24 hours.
Email: info@eps‑aluminum.com
Website: https://www.eps‑aluminum.com/