It can be tempting to think of stainless steel as being virtually invulnerable to rust and corrosion, and in some cases that are more or less the truth. The fact is that there are hundreds of particular stainless steel alloys in common use today, though, and most of these embody particular trade-offs. What that means in practice is that not all Stainless Steel Parts are equally impervious to rust, corrosion, and staining, so being aware of this can be helpful to those who thereby become able to take some related precautions.
In many cases, for example, parts that are destined to encounter heavy wear in the field will be based on alloys that hold up well to such conditions. That often means sacrificing something in the way of resistance to staining and rust, even where Stainless Steel Parts still retain enough of these qualities to justify the name. Parts that are designed, first and foremost, to hold up under wear inflicted through regular use will often be harder than those that are meant, above all else, to shed stains and be impervious to rust. Retaining some degree of the latter advantages, though, will often be possible even while the primary mission is being fulfilled.
The same idea often holds for parts that are meant to provide the strength and structural integrity of steel under high temperatures and pressures. Once again, alloys that aim squarely at maximizing these traits will tend to forgo something in the way of stain resistance, when compared to those that value the latter most highly. While this can seem, at times, to be an undesirable trade-off to be forced to make, the fact is that it rarely results in much in the way of problems in practice.
What is most important in every case, then, is simply to be aware that not all kinds of stainless steel are created equal in every respect. A quick look at a website like the one will show what an impressive variety of alloys are regularly used today, and how even those labeled “stainless” can vary quite significantly with regard to that characteristic and many others. You can also connect them on Facebook for more updates.