Carbon is one of the main elements of the industrial steel, properties and microstructure of the steel to a large extent determine the carbon content and distribution in the form of steel, carbon stainless steel is particularly significant. Carbon impact on the organization in stainless steel is mainly manifested in two aspects, on the one hand, the carbon stable austenite element, and the extent of the role (nickel is about 30 times), on the other hand, due to the affinity of the carbon and chromium large - series of complex formation with chromium carbide. So, from the strength decay candle performance both in terms of the role of carbon in the stainless steel are mutually contradictory.
Know the impact of the law, we can from the different usage requirements of, select the stainless steel of different carbon content.
Such as the industry's most extensive is the most basic stainless steel - 0Crl3 ~ 4Cr13 five provisions of the standard chromium content of steel for 12 to 14 percent is carbon and chromium after the formation of chromium carbide factors into account before decision, the purpose is to make the combination of carbon and chromium into chromium carbide, chromium content in solid solution will not be lower than the 11.7% minimum chromium content.
Five steel carbon content, strength and corrosion resistance is also differentiated, better corrosion resistance of 0Cr13 ~~ 2Crl3 steel, but the strength is lower than the 3Crl3 4Cr13 steel used for the manufacture of structural components, two steel carbon content higher to achieve high strength are used for manufacture of springs, knives and other parts requiring high strength and wear resistance. Another example is in order to overcome the 18-8 chromium-nickel stainless steel to intergranular corrosion, carbon content of steel can be reduced to below 0.03%, or by adding more elements than chromium and carbon affinity (titanium or niobium), so the formation of carbide chromium, another example, when high hardness and wear resistance as a major requirement, we can increase the carbon content of steel at the same time to suitably increase the amount of chromium, so that not only satisfy the requirements of the hardness and wear resistance, but also taking into account - given corrosion features, used as a bearing on the industry, measuring and blade stainless steel 9Cr18 and 9Cr17MoVCo steel carbon content up to 0.85 to 0.95%, due to their chromium content is also a corresponding increase, we are still guaranteed corrosion-resistant requirements.
Generally speaking, the carbon content of the stainless steel industry are relatively low, most of the stainless steel carbon content between 0.1 to 0.4 percent, while acid-resistant steel carbon content of 0.1 to 0.2% of the majority. Carbon content greater than 0.4% of the stainless steel is only a small part of the total number of steel, this is because under most conditions of use, stainless steel is always the main purpose of corrosion. In addition, the lower the carbon content is for certain process requirements such as ease of welding and cold deformation.
Other News:
A selection important factors affect the gasket
The important influence of the carbon in the stainless steel
By manganese and nitrogen instead of chrome-nickel stainless steel, nickel-princ
Double row deep groove ball bearing wear causes and prevention technology
Imports of iron ore and steel billet fell domestic iron ore lower
How to effectively protect the nsk bearings to achieve the longest life
The billets fall further rebar steel price adjustment or vulnerable welcome
Relocation project of a number of cities in steel prices start in the third quar
