Can Liquid Metal be used on 100% Copper IHS/Heatsinks?

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3 Aug 2020
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Hi all,

I am about to tackle a few liquid metal projects (1 cpu, 2 gpu) using TG Conductonaut and I thought I had all my bases covered. Now I am reading that TG only recommends using it on nickle-based copper IHS/heatsinks. All 3 of the intended items are 100% copper, not nickle based. Does this mean that I can't use liquid metal on 100% copper? Will it need to be replaced in a year? I have zero interest delidding this yearly. A few reddit threads are saying that GA + CU = CU Alloy, can lead to issues.

FYI, I will be using Kapton tape around all dies/heatsinks to help protect the pcb. Delid will be sealed in the 4 corners by crazy glue.

CPU: I7-6700K Delid. Copper IHS from Rockit 88

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GPU 1: Sapphire Pulse 5700xt

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GPU 2: Sapphire Nitro 480x with Arctic Cooler Twin Turbo II

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