Comparing 06Cr19Ni10 and 304: Which is superior?

1. Which is better, 06Cr19Ni10 or 304?

06Cr19Ni10 and 304 are commonly used stainless steel materials. In terms of application, there are only minor differences between the two.

However, if there are specific requirements for material implementation standards, it is important to note that 06Cr19Ni10 is a national standard material mark, while 304 is an American standard material mark, with different corresponding implementation standards.

For reference, here are the similarities and differences between 06Cr19Ni10 and 304:

2. Differences between 06Cr19Ni10 and 304

1. Different standards: 06Cr19Ni10 is a national standard stainless steel grade, while 304 is an American standard stainless steel grade.
2. Chemical Composition: There are slight differences in the chemical composition of 06Cr19Ni10 and 304, with slight variations in the required content of individual elements such as chromium and sulfur (see Table 1).
3. UNS Codes: 06Cr19Ni10 has the UNS code S30408, while 304 has the UNS code S30400.

3. The same points as 06Cr19Ni10 and 304

1. 18-8 Alloys: 06Cr19Ni10 and 304 are both 18-8 alloys, which means they have a metallurgical structure that allows them to be used in most corrosive environments and resist medium oxidation (and weak reduction) environments.
2. Wide application: 06Cr19Ni10 and 304 are widely used in various industries, including food, fresh water, household products and industrial products.
3. Density: The density of 06Cr19Ni10 and 304 is 7.93g/cm ³ .
4. Mechanical Properties: The mechanical properties of 06Cr19Ni10 and 304 are almost identical (see Table 2).
5. Carbon content: 06Cr19Ni10 and 304 have a carbon content of about 0.08%.
6. Welding performance: When in the welding state, its performance is not as strong as its low-carbon counterparts (022Cr19Ni10 and 304L respectively).

Table 1: Chemical composition differences between 06Cr19Ni10 and 304

Observation:

• 1. This table is a comparison of the two components, and the data is derived from the national standard GB/T24511-2017; American standard ASTM A240M-15a;
• 2. The data unit is percentage, that is, “%”;
• 3. Except for the indicated range, the components listed in this table are the maximum values.

Table 2: Differences between the mechanical properties of 06Cr19Ni10 and 304

Data source: GB/T24511-2017 Heat-resistant and stainless steel plates and strips for pressure equipment

304 Stainless Steel Mechanical Testing Requirements

Data Source: ASTM Specification A240/A240-15a for Chromium and Nickel Chromium Stainless Steel Plates, Sheets, and Strips for Pressure Vessels and General Applications.

The difference between 06Cr19Ni10 and 304 is in the implementation standards and chemical composition. Both 06Cr19Ni10 and 304 can be called “304 stainless steel” in a broad sense, but in a narrow sense, 06Cr19Ni10 is not exactly the same as 304.