Because there are many types of stainless steel, there are many grades included in the standard, and there are a large number of widely used non-standard grades at the same time. These grades have different properties. At the same time, there are a large number of widely used non-standard grades. Applicable stainless steel grades are very difficult. It involves expertise in various disciplines such as materials science, corrosion and engineering. In addition, engineering experience is an indispensable and important condition for the rational selection of stainless steel.

Necessary conditions for reasonable selection of stainless steel

The following conditions and subject knowledge should be necessary for the reasonable selection of stainless steel parts or equipment materials.

(1) Service conditions

The service conditions of stainless steel parts or equipment include corrosive medium composition, temperature, pressure, stress state, expected life, etc.

It is a prerequisite for choosing suitable stainless steel. Fully understanding the service conditions of components is the primary condition for rational selection of stainless steel.

(2) In-depth understanding of stainless steel properties and related data

Stainless steel materials should be selected according to the working conditions of components or equipment. The material selector should have a comprehensive understanding of the performance of various stainless steels, environmental factors that limit their use, and whether they are easy to purchase, so that they can make targeted choices.

(3) Engineering practical experience

Under the same service conditions, the actual use experience of stainless steel materials is an important basis for reasonable material selection, and special attention should be paid to it.

(4) Simulation test data

In many corrosive environments, without actual use experience, laboratory simulation test data or on-site hanging piece data are often the key data for rational selection of stainless steel materials.