Stainless steel s347h Forged Hex Nipple refers to a hexagonal pipe fitting manufactured through a forging process, primarily used for connecting and transitioning in piping systems. HT PIPE is a leading stockist and global exporter with over 15 years of expertise in international trade. We supply pipes, plates, round bars, and a comprehensive range of pipe fittings, flanges, and valves. Contact us now for free quotes and personalized product information.
ss 347h Forged Hex Nipple Standards
Stainless steel s347h Forged Hex Nipple conforms to international standards ASME B16.11. The material complies with ASTM A182 and ASME SA182 specifications, ensuring dimensional accuracy and consistent performance.
UNS S34709 Core Specifications
Size Range: 1/8" NB - 48" NB (threaded and socket weld types commonly 1/8" NB - 4" NB).
Connection Method: Primarily threaded connection and socket weld connection, selectable based on pipe installation requirements.
Hexagonal Size: Designed according to the nominal diameter to ensure ease of wrench operation and stable tightening torque.
s347h nipple Forging Process Parameters
Forging temperature: 1150℃ - 1200℃.
Heat treatment method: Solution treatment (1050℃ - 1100℃ water quenching).
Forging precision: Meets the grade requirements of GB/T 12362, surface roughness Ra≤6.3μm.
stainless steel s34709 Pressure Rating
Applicable pressure range: Class 150 - Class 2500.
Working temperature range: -270℃ - 800℃.
Applicable media: Steam, petroleum, natural gas, acid and alkali solutions, seawater, etc.
s34709 High-Temperature Performance
The Stainless steel s347h Forged Hex Nipple maintains structural stability under high temperatures of 600-650℃ and long-term load. Its high-temperature creep strength and rupture strength are superior to conventional stainless steels such as 304H and 316H. At 550-700℃, its creep rupture strength is approximately 15% higher than 321H, making it suitable for high-temperature and high-pressure environments such as supercritical power plants.
s347h material Corrosion Resistance
After welding, it can resist corrosion from nitric acid, acetic acid, and other media without solution treatment. At room temperature, it can resist corrosion from atmosphere, fresh water, neutral salt solutions, and most weak acid and alkali media. It can also resist polythionic acid stress corrosion cracking in hydrocarbon media, but it is not suitable for high-chloride media (its resistance to chloride ion pitting and crevice corrosion is weaker than 316H).
s347h Mechanical Properties
In the solution-treated state, the tensile strength at room temperature is ≥515 MPa, the yield strength is ≥205 MPa, the elongation is ≥40%, and the hardness is ≤201 HB, at 600℃, the tensile strength is ≥240 MPa, and the yield strength is ≥110 MPa, maintaining good toughness with no risk of embrittlement, and capable of withstanding vibrations and load impacts in piping systems.
