310S Stainless Steel (1.4845)

310S stainless steel offers strength, heat resistance, and long-term durability at high temperatures.

310S Stainless Steel

310S stainless steel is a high-alloy, austenitic stainless grade designed for elevated temperature service. Also known as 1.4845 stainless steel, this material contains high levels of chromium and nickel, giving it excellent resistance to oxidation, carburisation, and sulfidation at temperatures up to 1150°C.

As the low-carbon version of 310, 310S stainless steel is ideal for welded applications, offering improved resistance to sensitisation and intergranular corrosion. It maintains structural integrity in thermal cycling environments, making it a reliable choice for industries such as heat treatment, petrochemicals, and power generation.

310S is commonly supplied in forms such as 310S stainless steel tubes & pipes, sheets & plates, and is suitable for fabrication and forming thanks to its ductility and strength retention at high temperatures.

CUT TO LENGTH

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FORM

Special shapes that require forming or pressing? Yep - we do that too!

BEND

Need a specific bend or radius? No problem!

POLISH

From a satin finish, all the way up to super mirror. Let's make it sparkle!

AVAILABLE FORMS

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

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What are the Mechanical Properties of 310S Stainless Steel?

310S stainless steel offers solid mechanical strength even under extreme heat. Typical properties include:

Tensile Strength: 515–655 MPa (75–95 ksi)
Yield Strength: 205–310 MPa (30–45 ksi)
Elongation: 40%
Hardness: 217 HB
Modulus of Elasticity: 193 GPa (28 × 10⁶ psi)

Its ability to retain strength and resist creep deformation makes it a popular choice for furnace parts, heat exchangers, and other high-temperature structures.

What are the Physical Properties of 310S Stainless Steel?

310S stainless steel maintains its structure in high-heat environments thanks to the following thermal and physical properties:

Density: 8.0 g/cm³
Melting Point: 1402–1454 °C (2555–2650 °F)
Thermal Conductivity: 14.2 W/m·K
Thermal Expansion: 16.3 × 10⁻⁶/K
Specific Heat: ~0.5 J/g·K
Modulus of Elasticity: 193 GPa

These properties make 310S suitable for applications like thermal processing equipment, kilns, and exhaust systems.

Are There Variants of 310 Stainless Steel?

Yes, 310 stainless steel is available in several variants designed for specific performance needs:

310S: Low carbon version for improved weldability and resistance to sensitisation
310H: High carbon version for enhanced strength at temperatures above 800°C
310MoLN: Molybdenum- and nitrogen-enhanced version for pitting resistance
310Si: High-silicon grade for use in continuous casting and furnace linings
310L: Extra-low carbon version (≤0.03%) for critical welding applications

Each variant offers specific advantages depending on the application and exposure environment.

What is the Chemical Composition of 310S / 1.4845 Stainless Steel?

The typical chemical makeup of 310S (1.4845) stainless steel includes:

Chromium (Cr): 24.0–26.0%
Nickel (Ni): 19.0–22.0%
Silicon (Si): 0.5–1.5%
Manganese (Mn): ≤ 2.00%
Carbon (C): ≤ 0.08%
Sulfur (S): ≤ 0.03%
Phosphorus (P): ≤ 0.045%
Iron (Fe): Balance

The high chromium and nickel content provides excellent resistance to oxidation and carburisation, while the low carbon content improves weldability and resistance to intergranular corrosion.

Where is 310S Stainless Steel Used?

310S Stainless Steel (1.4845)