In industries that operate under extreme temperatures and challenging environments, selecting the right piping material is crucial. Among the various stainless steel grades available, SS 310H Pipes stand out for their superior heat resistance, strength, and durability. These pipes are designed specifically for high-temperature service, offering excellent mechanical properties and oxidation resistance.
Let’s explore everything you need to know about SS 310H Pipes — their properties, specifications, applications, and benefits.
What Are SS 310H Pipes?
SS 310H Pipes are made from Stainless Steel 310H, a high-carbon version of stainless steel 310. The higher carbon content provides greater strength at elevated temperatures, making these pipes ideal for use in environments that demand high heat resistance.
This austenitic stainless steel alloy contains significant amounts of chromium (25%) and nickel (20%), which contribute to its remarkable resistance to oxidation, carburization, and corrosion, even under continuous exposure to high heat.
Key Features of SS 310H Pipes
? Excellent Heat Resistance:
SS 310H Pipes perform well at temperatures up to 1100°C in continuous service and 1150°C in intermittent service.? High Strength and Durability:
The higher carbon content gives these pipes enhanced tensile strength and structural stability.? Superior Corrosion Resistance:
They resist corrosion in mildly oxidizing and reducing environments, including sulfur-bearing atmospheres.? Good Weldability and Fabrication:
SS 310H Pipes can be easily welded and fabricated using standard techniques.? Long Service Life:
Their combination of strength and resistance to heat and oxidation ensures long operational life with minimal maintenance.
Chemical Composition of SS 310H Pipes
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 19.0 – 22.0 |
| Carbon (C) | 0.04 – 0.10 |
| Manganese (Mn) | Up to 2.00 |
| Silicon (Si) | Up to 1.50 |
| Phosphorus (P) | Max 0.045 |
| Sulfur (S) | Max 0.030 |
| Iron (Fe) | Balance |
This unique combination of alloying elements gives SS 310H Pipes excellent oxidation resistance and thermal stability.
Mechanical Properties of SS 310H Pipes
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa (min) |
| Yield Strength | 205 MPa (min) |
| Elongation | 40% (min) |
| Hardness | 217 HB (max) |
These properties make SS 310H Pipes ideal for use in environments involving mechanical stress and high temperatures.
Types of SS 310H Pipes
SS 310H Seamless Pipes:
Produced without any welding joints, offering superior strength and reliability for high-pressure applications.SS 310H Welded Pipes:
Made by welding stainless steel plates or strips, suitable for medium to low-pressure systems.SS 310H ERW Pipes (Electric Resistance Welded):
Cost-effective option for general industrial applications where corrosion and temperature resistance are important.SS 310H EFW Pipes (Electric Fusion Welded):
Used in large-diameter applications, ensuring strength and durability in demanding environments.
Applications of SS 310H Pipes
Because of their exceptional thermal and mechanical properties, SS 310H Pipes are widely used across various industries, such as:
Petrochemical Industry: For handling hot gases, hydrocarbons, and process fluids.
Power Plants: Used in boiler tubes, heat exchangers, and superheaters.
Furnace Parts: Ideal for burner tips, heat treatment baskets, and conveyor belts.
Cement and Steel Plants: Used in high-temperature furnaces and kilns.
Food Processing Industry: Suitable for heat treatment equipment and steam lines.
Marine Engineering: Performs well in oxidizing and corrosive seawater environments.
Advantages of SS 310H Pipes
Outstanding performance in both oxidizing and carburizing atmospheres.
Maintains structural integrity even after prolonged exposure to heat.
Excellent resistance to scaling and corrosion.
Easy to fabricate, machine, and weld.
Available in various sizes, thicknesses, and custom lengths.
Equivalent Grades of SS 310H Pipes
| Standard | Grade |
|---|---|
| UNS | S31009 |
| WNR | 1.4845 |
| ASTM | A312, A213 |
| EN | X15CrNi25-20 |
These equivalents make it easier for engineers and buyers to find matching specifications across international standards.
Quality Testing and Standards
To ensure reliability and compliance with global standards, SS 310H Pipes undergo various quality tests, including:
Chemical Composition Analysis
Hydrostatic Test
Eddy Current and Ultrasonic Testing
Mechanical Testing
Intergranular Corrosion Test
Visual and Dimensional Inspection
These tests guarantee that the pipes are free from defects and capable of performing under extreme industrial conditions.
Why Choose SS 310H Pipes for Your Project?
SS 310H Pipes are a smart choice for industries that need materials to withstand heat, oxidation, and corrosion. Whether used in refinery furnaces, power generation, or heat treatment applications, these pipes provide long-lasting performance and reliability.
By choosing SS 310H Pipes from a trusted manufacturer or supplier, you ensure:
Superior quality and material certification (EN 10204 3.1 or 3.2)
Wide size and thickness range
On-time delivery and competitive pricing
Expert technical support and customization
Conclusion
In conclusion, SS 310H Pipes offer an excellent combination of strength, heat resistance, and corrosion protection. Their durability and high-temperature capabilities make them an indispensable component for industries that operate in harsh and demanding environments.
When sourcing SS 310H Pipes, always choose a reputable manufacturer or supplier who guarantees quality assurance, testing certifications, and dimensional accuracy. Investing in these pipes ensures not only superior performance but also long-term operational efficiency and safety.
