Yes, there are different sandpaper uses for wood and metal, if you use one sandpaper on both materials this creates not best results as you expect.
It only depends on grit of sandpaper; if you want to use on stripping, bulk-sanding ,reshaping then the coarse grits are best;
medium grits are for smoothing wood; and the finer grits are for sanding metal in which you also be use removing Rust With Sandpaper and polishing finishes.
If you want complete info about sandpaper use then you must touch the Sandpaper grit guide that can clear your data.
Huzmad is a hobbyist and experienced person from the wood and metal industry. Only try to build constructive things using corded and cordless tools.
In addition to his construction experience, Huzmad also a Gardener and home improver Whether it was helping brothers to make cedar cabinets, and use the machines as a passion to do-it-yourself mentality runs strong trust in this field
I am excited to help you to handle your projects and discover new ways to improve your home and reduce your efforts by doing well at your jobs.