347H Stainless Steel Pipe

Introduction to 347H Stainless Steel Pipes (Seamless & Welded)

Key Features:

• High-Temperature Resistance: YASCO 347H stainless steel pipes maintain excellent mechanical properties and oxidation resistance at elevated temperatures, making them suitable for high-temperature applications such as heat exchangers, boilers, and superheaters.
• Intergranular Corrosion Resistance: The stabilization with niobium minimizes the risk of carbide precipitation during welding or exposure to high temperatures, ensuring long-term durability in corrosive environments.
• Excellent Weldability: YASCO 347H stainless steel pipes can be easily welded using common welding techniques without the need for post-weld heat treatment, making them a preferred choice for fabrication projects.
• Superior Strength: With higher carbon content compared to standard 347 stainless steel, 347H offers improved tensile and creep strength, making it suitable for high-stress applications.

Chemical Composition and Physical Properties of Yasco 347H Stainless Steel

The chemical composition of YASCO 347H stainless steel pipe is designed to enhance its performance in high-temperature and corrosive environments. The primary elements include:

Physical Properties

YASCO 347H stainless steel pipe exhibits a range of physical properties that make it ideal for high-temperature and corrosive applications. Key properties include:

Density: 8.0 g/cm³ (0.289 lb/in³)
The relatively high density of 347H stainless steel contributes to its strength and durability, making it ideal for high-pressure and high-temperature environments.

Melting Range: 1400°C to 1450°C (2552°F to 2642°F)
The high melting point of 347H stainless steel ensures its stability and performance in extreme heat, such as in power plants and chemical processing equipment.

Coefficient of Thermal Expansion: 16.2 µm/m·°C (9.0 µin/in·°F) at 20°C to 100°C
This moderate thermal expansion rate allows 347H stainless steel pipes to withstand thermal cycling and maintain structural integrity under fluctuating temperatures.

Thermal Conductivity: 14.9 W/m·K (103.4 BTU·in/hr·ft²·°F) at 100°C
While not as thermally conductive as carbon steel, 347H stainless steel provides sufficient heat transfer for applications like heat exchangers and boilers.

 Electrical Resistivity: 0.73 µΩ·m at 20°C
The electrical resistivity of 347H stainless steel is relatively high, making it less conductive than many other metals. This property is beneficial in applications where electrical insulation is required.

Magnetic Permeability: Essentially non-magnetic in the annealed condition
347H stainless steel is an austenitic alloy, which means it is generally non-magnetic. However, slight magnetism may occur after cold working.

Specific Heat: 500 J/kg·K (0.12 BTU/lb·°F) at 20°C
This property indicates the material’s ability to absorb and store heat energy, which is crucial for applications involving thermal cycling.

Two Stainless Steel Pipe Specification Table (Classified by Process)

• Seamless pipe: manufactured through hot rolling, cold rolling, or cold drawing processes, suitable for high-pressure, high-precision scenarios.
• Welded pipe: using straight seam or spiral welding technology, mostly used for decoration and low-pressure pipeline systems.

Types of Packaging

More displays of 304 stainless steel pipes

We have a lot choice about the sizes and surface for your reference , customization is also OK .

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