Properties of material ( silver and copper )

ALL the properties? Maybe you could narrow it down a bit; like electrical properties or mechanical or chemical properties or crystal structure or thermal properties or...

Or, better yet, try this:

1) Go to your favorite search engine
2) Type in "Properties of Silver"
3) Read the answers.

When you right click an object and say assign material, it brings up a window where you can find silver and copper along with many other materials