top of page

310S / 1.4845

Stainless steel 310 is a high-alloy steel with excellent resistance to oxidation under high temperatures. It has good strength and ductility.

Stainless steel 310, also known as AISI 310 or UNS S31000, is a high-alloy steel that is renowned for its excellent resistance to oxidation under high temperatures. It is typically used in high-temperature applications such as furnace parts, heat exchangers, and heat treatment equipment.

The alloy is made up of mostly iron, with chromium and nickel as the primary alloying elements. These elements provide superior corrosion resistance, especially in high-temperature environments. The addition of nickel in particular gives the alloy excellent resistance to carburization and oxidation. The alloy also has good strength and ductility, making it easy to form and fabricate.

In terms of chemical composition, the alloy typically contains around 24-26% chromium and 19-22% nickel, with smaller amounts of other elements such as silicon, manganese, and carbon. The high nickel content in particular gives the alloy its excellent resistance to high-temperature oxidation.

Stainless steel 310 is also known for its good creep strength and high-temperature strength. It is able to retain its strength at high temperatures, making it suitable for use in furnace parts, heat exchangers, and other high-temperature applications.

It is also resistant to various types of corrosion, including stress corrosion cracking and intergranular corrosion. However, it is not as resistant to crevice corrosion as some other stainless steel alloys.

In summary, stainless steel 310 is a high-alloy steel that is known for its excellent resistance to oxidation under high temperatures and its good strength and ductility. It is commonly used in high-temperature applications and is resistant to various types of corrosion, making it a versatile material for many industrial applications.

Chemical Composition of 310S / 1.4845

The chemical composition of 310S stainless steel typically includes:

  • Chromium (Cr): 24-26%

  • Nickel (Ni): 19-22%

  • Silicon (Si): 0.5-1.5%

  • Manganese (Mn): 2%

  • Carbon (C): 0.08% max

  • Sulfur (S): 0.03% max

  • Phosphorus (P): 0.045% max

  • Iron (Fe): Balance

310S is a low carbon version of 310 stainless steel. The lower carbon content in 310S minimizes the formation of carbide precipitation during welding and improves its resistance to intergranular corrosion. It also improves its resistance to stress corrosion cracking and is more suitable for use in high-temperature applications.

The mechanical properties of 310S stainless steel include:

  • Tensile Strength: 515-655 MPa (75-95 ksi)

  • Yield Strength: 205-310 MPa (30-45 ksi)

  • Elongation at Break: 40%

  • Hardness (Brinell): 217 HB

  • Modulus of Elasticity: 193 GPa (28 x 106 psi)

Tensile strength is the amount of stress a material can withstand before breaking or failing. Yield strength is the amount of stress a material can withstand before permanent deformation.

Elongation at break measures how much a material can stretch before breaking. Hardness (Brinell) is a measure of a material's resistance to indentation and wear, and modulus of elasticity is a measure of a material's stiffness.

310S stainless steel has good strength and creep strength at high temperatures, making it suitable for use in high-temperature applications. The alloy's high nickel content also provides good resistance to carburization and general corrosion.

The physical properties of 310S stainless steel include:

  • Density: 8.0 g/cm3

  • Melting Point: 1402-1454 °C (2555-2650 °F)

  • Thermal Expansion: 16.3 x 10-6 /°C (20-100°C)

  • Thermal Conductivity: 14.2 W/m.K

Density is a measure of the material's mass per unit volume, melting point is the temperature at which the material changes from a solid to a liquid state, thermal expansion is the change in length per unit length per degree change in temperature, and thermal conductivity is a measure of a material's ability to conduct heat.

310S stainless steel has good ductility and formability, making it easy to form and fabricate. It also has good strength and creep strength at high temperatures, making it suitable for use in high-temperature applications. The alloy's high nickel content also provides good resistance to carburization and general corrosion.

Please note that these values are typical and may vary depending on the specific grade and manufacturer of the stainless steel. As always, it's recommended to check the specification from the manufacturer or supplier.

Physical & Mechanical Properties of 310S / 1.4845

Variants of 310

There are several variants of 310 stainless steel, including:

  1. 310H: This variant is a higher carbon version of 310, with a carbon content of 0.04-0.10%. It is designed for use in high-temperature applications where the steel will be exposed to temperatures above 800°C.

  2. 310S: 310S is a low carbon version of 310, with a carbon content of 0.08% maximum. It is more suitable for use in high-temperature applications and has improved resistance to intergranular corrosion.

  3. 310MoLN: This variant is designed for use in reducing environments, such as in the production of urea and ammonium nitrate. It has a higher molybdenum and nitrogen content than standard 310, which improves its resistance to pitting and crevice corrosion.

  4. 310Si: This variant is designed for use in applications where high silicon content is required, such as in electric furnace steelmaking, continuous casting, and glass furnace linings.

  5. 310L: This is a low-carbon version of 310 stainless steel, with a carbon content of 0.03% maximum. It is used in welding applications where the steel will be exposed to temperatures above 800°C.

It's always recommended to check the specification from the manufacturer or supplier before making a final decision about which variant is suitable for your application.

AVAILABLE FORMS

Intamet offers 310/S in a wide range of forms, including the below:

Stacked Pipes
fittings.jpg
Intamet-03269.jpg
Stainless_Steel_Plate.jpg
bottom of page