SS 347H Pipes are high-performance austenitic stainless steel pipes stabilized with niobium and specifically designed to provide excellent resistance against intergranular corrosion in high-temperature service. The “H” grade refers to the high carbon content, which enhances strength and creep resistance at elevated temperatures.
SS 347H offers superior mechanical properties compared to conventional stainless steels like SS 304/316, especially in environments where prolonged exposure to heat and corrosive media occurs. It maintains structural stability under cyclic heating and cooling conditions, making it suitable for applications involving thermal stress.
The alloy exhibits strong resistance to oxidation up to 1500°F (816°C) and is widely used in environments where carburization and creep resistance are critical. Its niobium-stabilized composition prevents carbide precipitation during welding, ensuring durability and extending service life.
Applications of SS 347H Pipes are extensive, particularly in industries such as oil & gas, refineries, chemical processing, power generation, food processing, and heat exchanger systems. Common end-uses include superheaters, boiler tubes, furnace parts, exhaust manifolds, and petrochemical processing lines.
With compliance to international standards like ASTM A312, A213, and ASME SA312, SS 347H pipes are available in seamless, welded, and fabricated forms, ensuring reliability across diverse engineering requirements.
Key Properties
-
Excellent resistance to intergranular corrosion.
-
Superior creep and stress rupture strength at high temperatures.
-
Good oxidation resistance in continuous service up to 1500°F (816°C).
-
Stabilized with niobium to prevent carbide precipitation during welding.
SS 347H Pipes are the go-to choice for high-temperature and high-stress environments where both corrosion resistance and mechanical strength are essential. Their stabilized composition ensures reliability in power plants, refineries, petrochemicals, and heat-intensive industries, making them a trusted material for long-term durability.
Buy Valves at GCCValves.com
And Pipes at MiddleEastPiping.com
Reviews
There are no reviews yet.