What is Stainless Steel 310S and Where is it Used?

Introduction
What is Stainless Steel 310S?
Stainless Steel 310S Chemical Composition
Key Mechanical Properties of SS 310S
Stainless Steel 310 vs 310S: What’s the Difference?
Where is Stainless Steel 310S Used?
Advantages of Stainless Steel 310S
FAQs

1. Introduction

When industries require a material that can withstand extreme heat and corrosion, Stainless Steel 310S often tops the list. Known for its high chromium and nickel content, SS 310S is a heat-resistant alloy designed for elevated temperature applications. It combines strength, durability, and oxidation resistance, making it an essential material in furnaces, petrochemical plants, and power generation equipment.

In this blog, we’ll explain what Stainless Steel 310S is, its composition, properties, benefits, and the industries where it is commonly used.

2. What is Stainless Steel 310S?

Stainless Steel 310S is an austenitic stainless steel grade with 25% chromium and 20% nickel, making it highly resistant to oxidation and scaling even at high temperatures (up to 1100°C).

The “S” in 310S indicates its low carbon content, which prevents carbide precipitation during welding. This improves its weldability and corrosion resistance compared to standard SS 310.

In simple words, SS 310S is a heat-resistant alloy ideal for high-temperature applications like furnaces, kilns, and power plants.

3. Stainless Steel 310S Chemical Composition

Element	Percentage (%)
Chromium (Cr)	24.0 – 26.0
Nickel (Ni)	19.0 – 22.0
Carbon (C)	≤ 0.08
Manganese (Mn)	≤ 2.0
Silicon (Si)	≤ 1.5
Phosphorus (P)	≤ 0.045
Sulfur (S)	≤ 0.03
Iron (Fe)	Balance

Why this matters:

High Chromium → boosts oxidation resistance.
High Nickel → adds strength at elevated temperatures.
Low Carbon (310S) → prevents carbide precipitation, improving weldability.

4. Key Mechanical Properties of SS 310S

Property	Value
Density	8.0 g/cm³
Melting Point	1400–1450 °C
Tensile Strength	520 MPa (min)
Yield Strength	210 MPa (min)
Elongation	40% (min)
Hardness	225 HB (max)

These mechanical properties make SS 310S suitable for heat-intensive and corrosive industrial environments.

5. Stainless Steel 310 vs 310S: What’s the Difference?

Many buyers search for SS 310 vs SS 310S, so here’s a clear comparison:

Feature	SS 310	SS 310S
Carbon Content	Higher (≤0.25%)	Lower (≤0.08%)
Weldability	Moderate	Excellent
Resistance to Carbide Precipitation	Lower	Higher
Best Use	High-temp parts without welding	High-temp parts requiring welding

Choose SS 310S when welding is required or when maximum corrosion resistance is needed.

6. Where is Stainless Steel 310S Used?

Stainless Steel 310S is widely used in industries where heat and corrosion resistance are critical:

Furnace Equipment → radiant tubes, conveyor belts, burner parts.
Petrochemical Industry → refinery piping, catalytic converters, process equipment.
Power Plants → boilers, superheater tubes, heat exchangers.
Food Processing → sterilizers and equipment exposed to high heat.
Automotive & Aerospace → exhaust systems, jet engine parts.
Cement & Steel Plants → kiln linings, rotary kilns, heat-treatment trays.

7. Advantages of Stainless Steel 310S

Outstanding Heat Resistance – performs well up to 1100°C.
Oxidation & Scaling Resistance – stable under continuous high-temperature exposure.
Excellent Weldability – thanks to low carbon content.
Corrosion Resistant – resists acids, alkalis, and oxidation.
Durability – long-lasting, even in extreme conditions.

Stainless Steel 310S is a premium high-temperature alloy with excellent resistance to oxidation, scaling, and corrosion. Its low carbon content makes it highly weldable and reliable, especially in industries like furnaces, petrochemicals, power plants, and automotive sectors.

At Riyaarth Overseas, we supply top-quality Stainless Steel 310S sheets, plates, pipes, and fittings that meet global standards. Contact us today to source materials that match your industrial needs.