Stainless Steel 310H Welded Tubes: A High-Temperature Alloy Solution

Stainless Steel 310H welded tubes are a critical component in high-temperature and high-corrosion applications across industries like petrochemical, power generation, and furnace manufacturing. Renowned for their excellent heat resistance, strength, and weldability, these tubes are specifically designed to perform under extreme conditions.

What is Stainless Steel 310H?

Stainless Steel 310H is a high carbon version of the 310 stainless steel alloy. It is an austenitic chromium-nickel stainless steel with enhanced high-temperature strength. The higher carbon content in 310H (compared to standard 310) increases its creep resistance, making it suitable for structural applications at elevated temperatures.

Key Chemical Composition:

Chromium (Cr): 24-26%
Nickel (Ni): 19-22%
Carbon (C): 0.04-0.10% (higher in 310H)
Iron (Fe): Balance
Manganese, Silicon, Phosphorus, Sulfur: Minor constituents

Featur

es of SS 310H Welded Tubes

High Temperature Strength
310H welded tubes retain strength and oxidation resistance at temperatures up to 1150°C (2100°F). This makes them ideal for heat exchangers, furnace components, and thermal process equipment.
Oxidation and Corrosion Resistance
Thanks to their high chromium and nickel content, these tubes offer superior resistance to oxidation and corrosion, even in cyclic heating and cooling environments.
Weldability and Fabrication
310H tubes can be easily welded using standard fusion and resistance welding techniques. Their austenitic structure allows for good formability and machinability.
Creep Resistance
The increased carbon content provides better resistance to deformation under mechanical stress at elevated temperatures.

Applications of Stainless Steel 310H Welded Tubes

Petrochemical & Refinery Equipment
Ideal for reactors, heat exchangers, and furnace tubes due to resistance to carburizing and oxidizing atmospheres.
Power Plants
Used in boiler tubes, superheaters, and reheater tubes operating in high-pressure and high-temperature environments.
Heat Treatment Equipment
Components like muffles, retorts, and kilns benefit from the alloy's ability to withstand thermal cycling and oxidation.
Aerospace and Defense
In specialized systems where exposure to extreme heat is common.