Austenitic 304(S30400) stainless steel is a common material in stainless steel, with a density of 7.93 g/cm³, also known as 18/8 stainless steel in the industry. High temperature resistance 800℃, with good processing performance and high toughness, widely used in industry and furniture decoration industry and food and medical industry.
Common marking methods on the market include 0Cr18Ni9 and SUS304, of which 0Cr18Ni9 generally represents national standard production, 304 generally represents ASTM standard production, and SUS 304 represents Japanese standard production.
Austenitic 304(S30400) stainless steel Chemical composition:
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
|
304 |
min.
max. |
-
0.08 |
-
2.0 |
-
0.75 |
-
0.045 |
-
0.030 |
18.0
20.0 |
- |
8.0
10.5 |
-
0.10 |
Austenitic 304(S30400) stainless steel Physical properties:
|
Grade
|
Density (kg/m3) |
Elastic Modulus (GPa) |
Mean Coefficient of Thermal Expansion(μm/m/℃) |
Thermal Conductivity (W/m.K) |
Specific Heat 0-100째C (J/kg.K) |
Electrical Resistivity (nΩ .m) |
|
0-100℃ |
0-315℃ |
0-538℃ |
at 100℃ |
at 500℃ |
|
304 |
8000 |
193 |
17.2 |
17.8 |
18.4 |
16.2 |
21.5 |
500 |
720 |
For Austenitic 304(S30400) stainless steel, the Ni element in its composition is very important, which directly determines the corrosion resistance of 304 stainless steel and its value.
The most important elements in 304 are Ni and Cr, but they are not limited to these two elements. The specific requirements are stipulated by product standards. The common judgment situation in the industry is that as long as the Ni content is greater than 8% and the Cr content is greater than 18%, it can be considered as 304 stainless steel. This is why the industry calls this type of stainless steel 18/8 stainless steel. In fact, the relevant product standards have very clear regulations for 304, and these product standards have some differences for different shapes of stainless steel.
If you need Austenitic 304(S30400) stainless steel, please contact us.
