The weaker metal will not attract the magnet but the addition will.
Do magnets stick to sheet metal.
Iron is found in steel so steel attracts a magnet and sticks to it.
However the cost will be higher do not use pre painted aluminum sheet as it does not have any magnetic properties.
Steel is an alloy of iron and carbon which makes it ferromagnetic due to its high iron content.
That is why you won t see a magnetic business card sticking to a wooden desk for example.
The academic term for materials that do not attract magnets is diamagnetic.
Finally make sure that when you order your item you tell the provider you are making a magnetic board and that you require the material to be flat and free of any surface imperfections or dents.
30 gauge sheet can usually be found at building supply stores in sections that carry heat ventilation and air conditioning ducting.
Magnet sheets with adhesive 8 x 10 inch magicfly pack of 15 flexible sticky magnet sheet crafts photos and more easy peel and stick by magicfly 4 6 489.
Magnets do not stick to non metal materials.
About the tin sheet.
Magnets will not stick to aluminum copper brass etc.
Wood and metal frames are not necessary.
Most people know from experience that magnets do not stick to non metal materials such as wood plastic fiberglass and textile.
We use inexpensive plastic frames.
The sheet can be smaller than the frame.
Galvanized steel is made by dipping steel into molten zinc.
Magnets stick to any metal that contains iron cobalt or nickel.