The development of stainless steel
Stainless steel appeared since the early 20th century. The development of the stainless steel speed very quickly. There are more than 300 brand has formed a series of categories of steel. And application range widening. Consumption soared to the 1990 s, the world’s stainless steel consumption is growing at 7.4% per year on average. Chinese consumption is first in the world since 2001 years. Let’s talk about the classification of stainless steel and development.
Stainless steel accordance with the organizational category (heated to high temperature air cooling after organization) : Be classified as ferritic stainless steel、 austenitic stainless steel、 duplex stainless steel、and precipitation hardened stainless steel. According to the different types of stainless steel, they have different properties. For example, all austenitic stainless steel, , is no magnetic, and martensite and ferrite is magnetic.
The development of stainless steel
In recent years, petrochemical, military and other industries on the material of the urgent need to promote the rapid development of the stainless steel. A large number of new type stainless steel metallurgical successively developed. Improved the local corrosion resistance of stainless steel in harsh environment with water. These alloys compared with the conventional stainless steel, has a low degree of high alloy gap element and stronger resistance to local corrosion resistance, etc.
For differs from conventional stainless steel, the stainless steel is referred to as super stainless steel. According to the different structure of room temperature. The categories of super stainless steel are:
- ferritic stainless steel
- super austenitic stainless steel
- super dual-phase stainless steel
- other categories
