I'm designing a simple sheet-metal clamp that holds a heatpipe firmly against a PCB component (an ASIC that get's damn hot if you're interested). Does anyone have any suggestions for an appropriate material for the clamp? I was thinking of using 1/2 hardened stainless steel, 0.5mm thick. This has a springy quality because it's 1/2 hardened, but I have no idea how well it will retain it's clamping force over time (I.E: would the material creep over the years and lose its clamping pressure?) Any thoughts or suggestions for a better material? I'm aware of similar products that use this material, but that doesn't mean it's the best choice in my opionion.