Stainless steels include steels that have had chromium added to them. The steel is designated as stainless steel if something includes at least 10.5 percent the percentage of chromium as well as at the maximum of 1.2 percent by weight with carbon, which prevents the production of carbides that are harmful to the substance, according to European Standard EN 10088-13.
This same Nickel is another factor to consider. Nickel makes the alloy more homogeneous. It has the qualities of flexibility, malleability, plus toughness (shape memory). Stainless steel jewelry supplier put in jewelry, the amount of nickel emission from metals should not exceed 0,2 g / cm2 per week, according to the regulations.
As a response, the majority of nickel-based alloys have been phased out. However, some materials, such as stainless steel, are still permitted.
Regarding jewelry to be placed through into human body event of piercing, according to European Nickel Regulation 94/27/EC, in its most recent version dated September 27, 2004, the overall nickel release rate must not exceed 0.2 g/ cm2 per week.
Medical steels of the types 304L, 316L, and especially 316LVM meet these standards. Inside the event of interaction with an injury, only 316 LVM metal is authorized therefore the name surgical steel. Just this person is permitted to do piercings.
Stainless steel jewellery supplier put other elements which include:
Nickel can be replaced with manganese. To deal with nickel availability uncertainty, a range of stainless-steel alloys has been developed.
Molybdenum plus copper improves corrosion resistance in a wide range of corrosive media, particularly acidic media (e.g. sweat), but it also phosphoric solution and sulfur.
Stainless steels with tungsten improve their resistance to high temperatures.
Titanium prevents metallurgical structures from being altered during hot activity, particularly welding, keeping the stainless-steel characteristic while avoiding chromium depletion.
Niobium seems to have a much greater melting point plus similar characteristics to titanium.
Silicon is also important for oxidation resistance.