SUS 409L stainless steel
SUS 409L is a low-carbon, low-alloy stainless steel mainly composed of iron, chromium, titanium and other elements. Its low carbon content helps reduce the risk of intergranular corrosion, making SUS 409L suitable for use in high temperature, highly corrosive environments. In addition, it has excellent heat resistance and can maintain stable performance at high temperatures.
SUS 409L Chemical Properties
The main components of SUS 409L include elements such as chromium, iron, titanium and carbon. Among them, the addition of chromium gives it superior oxidation and corrosion resistance, iron provides basic structural support, and titanium improves mechanical properties at high temperatures. The lower carbon content helps improve the weldability of stainless steel.
409L Chemical composition (%)
| ITEM | C | SI | MIN | P | S | CR | NI | N | *TI | *NB | OTHERS |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | === | === | === | === | === | 10.50 | === | === | 6(C+N) | === | === |
| Max | 0.030 | 1.00 | 1.00 | 0.40 | 0.020 | 11.70 | 0.50 | 0.030 | 0.5 | 0.17 | === |
SUS 409L mechanical properties
SUS 409L has superior mechanical properties, including high strength, high yield strength and excellent cold workability. Its tight structure makes it stable in high temperature and high pressure environments. This makes SUS 409L suitable for manufacturing structural parts that require high strength and heat resistance, such as components in automobile exhaust systems.
409L mechanical properties
| MIN | MAX | ||
|---|---|---|---|
| Yield Strength (N/mm2) | 0.20% Y.S. | 170 | N/mm2 |
| 1% Y.S. | === | ||
| Tensile Strength (N/mm2) | 380 | N/mm2 | |
| Elongation % | 20 | === | |
| Hardness Test | HRB | === | 88 |
| HV | === | 200 |
SUS 409L Physical Properties
The physical properties of SUS 409L include density, thermal conductivity and thermal expansion coefficient. Its lower density and higher thermal conductivity allow SUS 409L to quickly equalize temperatures in high-temperature environments and reduce stress when cooling. A low coefficient of thermal expansion helps reduce stress caused by temperature changes and improves the material’s durability.
SUS 409L corrosion resistance
SUS 409L performs well in high temperature, highly corrosive environments. Its chromium content gives it excellent corrosion resistance, making it resistant to attacks by acids, alkalis, gases, etc. This corrosion resistance makes SUS 409L commonly used in automotive exhaust systems, industrial furnaces, burners and the chemical industry.
SUS 409L product application
SUS 409L is widely used in various industrial fields. In the automotive industry, it is widely used in the manufacture of exhaust pipes, mufflers and other components due to its high temperature resistance and corrosion resistance. In the chemical industry, SUS 409L is commonly used in the manufacture of chemical reactors, burners, and high-temperature furnaces. In addition, SUS 409L also plays an important role in construction, energy and other fields.
Overall, SUS 409L stainless steel is an ideal choice in several industrial applications due to its superior high-temperature performance, corrosion resistance, and high strength. It is widely used in automobile, chemical industry, construction and other fields, promoting the continuous development of modern industry.