Heatsink 400mm

Updated October 6, 2026

Overview

Product sourcing insights & recommendations

27 来源

The phrase 'heatsink 400mm' refers to large-format thermal management components, primarily extruded aluminum profiles used in high-power industrial applications such as 5G telecom base stations, solar inverters, and EV battery systems.

Product Specifications & Capabilities

Current market offerings for 400mm heatsinks emphasize high-density fin geometries and "near-net-shape" extrusion to minimize weight while maximizing surface area.

* Dimensions: Standard profiles often feature widths of 400mm with lengths ranging from 100mm to 3000mm+ Alibaba Alibaba.

* Materials: Predominantly Aluminum Alloy 6063-T5/T6, chosen for its excellent thermal conductivity (approx. 200 W/m·K) and extrusion properties Alibaba Alibaba.

* Advanced Features: Integration of heat pipes or liquid cooling manifolds is becoming common for 400mm units used in high-heat flux applications like AI server clusters Alibaba Thermalmanagementexpo.

* Fabrication: Leading suppliers now offer turnkey CNC machining, including milling, drilling, and custom anodizing to meet strict industrial tolerances Alibaba Alibaba.

Market Trends for 2026

The thermal management market is shifting from component-level sourcing to integrated system design, driven by the following trends:

* AI & Power Density: Hyperscale data centers are pushing power density beyond air-cooling limits. By 2026, direct-to-chip liquid cooling is expected to become the default, leading to 400mm cold plates replacing traditional air-cooled fin stacks Thermalmanagementexpo.

* Material Efficiency & Costs: Rising aluminum billet prices and tariffs are forcing manufacturers to adopt thin-wall extrusions and complex internal geometries to reduce material volume without sacrificing performance Profileprecisionextrusions.

* Supply Chain Consolidation: OEM buyers are increasingly favoring "single-source" partners who provide extruding, precision machining, and surface treatment in one facility to ensure accountability Profileprecisionextrusions.

* Sustainability: There is a growing focus on using recycled aluminum billets to meet new corporate ESG (Environmental, Social, and Governance) targets by 2026 Profileprecisionextrusions.

Featured Sourcing Options

I have identified several high-capacity suppliers capable of producing large-scale 400mm profiles:

Detailed product listings and factory profiles are available in the attached files.

I can help further with your sourcing or design needs. Would you like to:

Sources & References

27 sources cited · Verified industry data & reports

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