Oversimplifying it significantly, surface alloying with chromium. Some grades only have the chromium in the surface, other grades the chromium is throughout the material.
Yes, stainless steel is not magnetic in the same way as materials like iron, nickel, and cobalt. A regular magnet will not stick to stainless steel, although some types of stainless steel can become weakly magnetic through processes like cold-working.
Yep, you can weld steel to stainless and you can weld stainless to steel. You can use steel or stainless welding rod in either case but the steel or steel welding rod will of course rust.
Well, the answer lies in the question; by saying 'real' stainless steel, you are implying that there are fake metals which go under the name 'stainless steel', thus the difference is that the stainless steel in refigerators is actually stainless steel, and the fake stainless steel is not...thus your question is answered...
No, Stainless steel is not porous. Steel how ever is.
stainless steel
Steel and stainless steel tend to weigh around the same, however, stainless steel can sometimes be a bit lighter.
Yes, magnets can typically be put on a stainless steel refrigerator. However, not all stainless steel is magnetic, so it would depend on the specific alloy used to make the refrigerator. If the stainless steel refrigerator is magnetic, magnets will stick to it.
Stainless steel would be frozen at room temperature because it is a solid. The melting point of stainless steel is about 1510 degrees Celsius, and the melting point is the same as the freezing point. So, at any point below 1510 degrees Celsius, stainless steel is a solid, therefore frozen.
Stainless steel
Stainless Steel 316, a type of stainless steel
stainless steel
UTS of 304L Stainless Steel is 586MPa UTS of 304 Stainless Steel is 621MPa