Anytime a metal product is manufactured and is going to be open to elements like rain or snow etc.. It is galvanized. This process helps slow down the oxidation process or rusting.

Galvanized springs are made with nickel and do not rust. These springs are shiny metal just like a five cent nickel. They will dull over time and look like aluminum. Non Galvanized springs are painted black and will rust a lot quicker and break before a galvanized spring will.

Galvanized springs are rated with more cycles than non galvanized springs

(1 cycle = once up and once down.) The bigger and stronger the spring the more cycles it will have.

Some garage door companies I have worked for would offer a galvanized spring with a lifetime warranty. The springs last long enough where they can replace the springs for free.

Even though they last longer doesn’t mean they don’t break. These types of warranties just cover the cost of the spring not the labor to replace them.