Achieving realistic metal can be a little bit tricky, but I will try to simplify the process of making a realistic metal texture in Blender.
Step 1: Create a new texture.
Step 2: Increased Metallic Slider
Now you can see the material turning metallic, but it still doesn’t look realistic because it has no texture to it.
Step 3: Add Bump Node and Noise Texture.
Step 4: Connect the Fac to the Hight and the Normal to the Normal.
Step 5: Increase scale and detail in noise texture
Step 6: Duplicate noise texture (Shift + D to duplicate nodes).
Step 7: Connect the noise texture’s fac to the noise texture’s vector.