405 Stainless Steel: Compositions, Properties and Applications

In the world of metals, stainless steel is a magical material. It is strong, durable, corrosion-resistant, and widely used. Today, we will delve into 405 stainless steel, a stainless steel that is widely used in many fields. We will learn about its composition, properties, and applications, allowing you to have a deeper understanding of this material.

Compositions of 405 Stainless Steel

The chemical composition of 405 stainless steel mainly includes:

1. Carbon (C): up to 0.08%
2. Silicon (Si): up to 1.00%
3. Manganese (Mn): up to 1.00%
4. Phosphorus (P): up to 0.040%
5. Sulfur (S): up to 0.030%
6. Chromium (Cr): 11.5%~14.5%
7. Nickel (Ni): up to 0.75%
8. Copper (Cu): up to 1.50%

Among them, chromium is the main alloy element in 405 stainless steel, which can improve the corrosion resistance and heat resistance of the steel. In addition, the addition of copper can improve the weldability and mechanical strength of the steel.

What are the mechanical properties of 405 stainless steel?

It has the following mechanical properties:

1. Tensile strength: minimum value of 485 MPa (70 ksi)
2. Yield strength: minimum value of 275 MPa (40 ksi)
3. Elongation: minimum value is 25%
4. Hardness: maximum Brinell 160

It is important to note that these values may vary depending on specific production standards and heat treatment conditions. Generally, 405 stainless steel has good plasticity and toughness, as well as high corrosion and heat resistance, making it suitable for manufacturing components in high-temperature and high-pressure environments such as chemical equipment, oil and gas pipelines, heaters, and furnaces.

What are the physical properties of 405 stainless steel?

The physical properties of 405 stainless steel include:

1. Density: 7.80 g/cm³;
2. Melting point: 1398~1454℃ (2550~2650°F);
3. Coefficient of thermal expansion: 11.2×10^-6 /K (within the range of 20~100℃);
4. Thermal conductivity: 23.9 W/m·K (100℃, 32°F).

It is important to note that these values may vary slightly due to factors such as production standards, chemical composition, and temperature. In addition, 405 stainless steel has excellent heat resistance and corrosion resistance, and can maintain good strength and toughness at high temperatures, making it suitable for manufacturing high-temperature and high-pressure equipment, chemical pipelines, furnaces, and other components.

Applications of 405 Stainless Steel

405 stainless steel has excellent corrosion resistance, high-temperature strength, and good weldability, making it widely used in various industries.

One of the most common uses of this stainless steel is in the manufacture of heat exchangers. It is also used in chemical processing equipment such as reactors, tanks, and towers, as it can withstand many chemicals that other metals cannot withstand.

It is not only suitable for corrosive environments, but also for higher temperatures than other types of steel. This makes it very suitable for use as a furnace or equipment that needs to withstand high-temperature oxidation.

The automotive industry also uses this material in exhaust systems because it can resist high-temperature fouling without degrading over time.

In addition, 405 stainless steel is used as a base metal for composite higher alloy materials for applications that require higher corrosion and wear resistance.

Overall, the excellent performance of 405 stainless steel makes it an excellent choice for different industrial fields including petrochemicals; pulp and paper; food processing; marine engineering; energy and power generation, etc.

Why Choose Sino Stainless Steel?

Thank you for reading our article and we hope it can help you to have a better understanding of the composition, properties, and applications of 405 Stainless Steel. If you want to find more information about stainless steel, we’d advise you to visit Sino Stainless Steel.

As a top supplier of stainless steel products, Sino Stainless Steel provides our customers with high-quality products such as stainless steel coils, stainless steel strips, stainless steel sheets, stainless steel bars, stainless steel tubes, and stainless steel wires at a very competitive price.