There isn't a metal that's completely immune to corrosion. Even the most corrosion-resistant metals, like platinum, gold, and titanium, can corrode under certain conditions.

However, some metals are significantly more resistant to corrosion than others.

Here are some examples:

* Platinum and Gold: These metals are extremely resistant to corrosion, even in harsh environments. They are often used in jewelry and high-end electronics because of their durability.

* Titanium: This metal is very resistant to corrosion, especially in acidic and saline environments. It's commonly used in implants, aerospace, and chemical processing equipment.

* Stainless Steel: This is a popular alloy with high corrosion resistance, especially when containing chromium. It's used in a vast array of applications, from kitchen sinks to surgical tools.

It's important to note that even these highly corrosion-resistant metals can corrode under specific conditions, such as extreme temperatures, exposure to certain chemicals, or prolonged contact with dissimilar metals.

So, the answer is that there is no metal that is truly immune to corrosion. However, there are metals that exhibit exceptional resistance to corrosion in most environments.