A mixture
A steel is considered to be stainless if it contains a minimal of 13% chromium.
When an alloy of steel contains more than approximately 10 ½% Chromium it can be classified as a stainless steel. There are several clasifications of stainless steel with varying propertys Martensitic, Ferritic, Austenitic and Duplex.
The elements that make up stainless steel are nickel, iron,chromium and manganese.
For example the stainless steel grade 304 with 18 % chromium and 8 % nickel.
Chromium
There are many different mixtures (alloys) for stainless steel, but a good answer can be found on Wikipedia's page on the related link.
A steel is considered to be stainless if it contains a minimal of 13% chromium.
The iron ore is refined into iron, The molten iron is then alloyed (mixed) with other molten metals, commonly chromium and nickel, along with carbon. There are different mixes to produce stainless steel with different properties. It is not truly stainless, but is stain RESISTANT and rust RESISTANT.
Chromium is a rare element. There are many uses for it. We can use it for make stainless steel.
When an alloy of steel contains more than approximately 10 ½% Chromium it can be classified as a stainless steel. There are several clasifications of stainless steel with varying propertys Martensitic, Ferritic, Austenitic and Duplex.
stainless steel contains chromium. chromium gives off toxic fumes when heated.
The elements that make up stainless steel are nickel, iron,chromium and manganese.
Stainless steel remains stainless after recycling. It resists rusting primarily because of the chromium content of the alloy. The chromium oxidizes to form a protective layer. The formation of this oxide layer is improved by a process called passivation. There are different grades of stainless steel having varying proportions of chromium, nickel and other elements so if you want to get top-dollar for stainless steel scrap, you need to segregate it.
For example the stainless steel grade 304 with 18 % chromium and 8 % nickel.
steel and chromium
Stainless steels contain sufficient chromium to form a passive film of chromium oxide, which prevents surface corrosion. Stainless steel will not be effect by temperatures pass 100 degees Celcius (212 Fahrenheit) at which temperature water boils.
chromium and nickel