ASME SB338 GR7 Titanium Alloy Steel Heat Exchanger Tube For Power Plant

ASME SB338 GR7 Titanium Alloy Steel Heat Exchanger Tube , Power Plant

ASME SB338 Grade 7 refers to a specific standard and material specification for Titanium Alloy (Ti-0.2Pd). The material is primarily used in applications requiring both high corrosion resistance and high strength under various challenging conditions.

ASME SB338 Gr. 7 designates a titanium alloy containing Titanium (Ti) as the base metal and 0.12% to 0.25% Palladium (Pd) as the alloying element. The addition of palladium to titanium gives the alloy superior corrosion resistance, particularly against acidic environments and seawater.

The excellent corrosion resistance results in reduced maintenance and longer service life compared to other materials like stainless steel or carbon steel.

Chemical Composition:

• Titanium Grade 7 (Ti-0.2Pd) is an alloy primarily composed of titanium with a small percentage of palladium (0.12-0.25%). This alloy is designed to offer enhanced corrosion resistance, especially in aggressive environments such as in seawater, chemicals, or heat exchangers.
• Titanium (Ti) is known for its excellent strength-to-weight ratio, outstanding corrosion resistance, and ability to perform under high temperatures.
• Palladium (Pd) is added to Grade 7 to improve resistance to general corrosion, particularly in acidic environments.

Mechanical Properties:

• Tensile Strength: Titanium Grade 7 has a high tensile strength, typically ranging between 550 to 750 MPa (80-110 ksi).
• Yield Strength: The yield strength is typically around 275 to 450 MPa (40-65 ksi), which ensures the material performs well under pressure without permanent deformation.
• Elongation: The elongation in the tensile test for Grade 7 titanium alloy tubes is typically around 15-20%, indicating good ductility.

Applications:

1. Heat Exchangers: Primarily used in heat exchangers, especially in environments with high corrosion potential such as desalination plants, chemical processing industries, and offshore oil and gas platforms.
2. Marine and Offshore Applications: Its superior corrosion resistance makes it suitable for marine applications where the heat exchanger tubes are exposed to saltwater.
3. Petrochemical and Chemical Industries: The alloy’s ability to withstand acidic and corrosive environments makes it ideal for heat exchangers used in chemical processing industries.

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Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories,  the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always.   The factories already got certificates like : ABS, LR, DNV-GL, BV, KR, CCS, ASME, ISO 9001, ISO14001, ISO18001, ect.

Our factories main products as below : 
Factory 1th: Stainless steel seamless tube, Duplex steel seamless tube, Super duplex steel seamless tube, Nickel alloy steel seamless tube;

Factory 2th: Carbon steel seamless tube, Alloy steel seamless tube; Enhanced Heat Tranfer Tube, low fin tube ,U bending workshop;
Factory 3th: High frequency welding fin tube(HFW fin tube, Solid Fin tube, Studded Tube, Serrated Fin tube, Longitudinal welding fin tube), Wound fin tube(L type fin tube, LL type fin tube,  KL type fin tube), Embedded G type fin tube , Extruded fin tube,  low fin tube, U bend & 180deg. Return;

Yuhong Holding Group also has gained rich experience for project package( products contain:Pipes, Fittings, Flanges, heat exchanger, furnace, fired heater, air cooler, boiler) , YUHONG brand has marked its global presence in more than 85 countries, like, Korea, USA, Canada, Mexico, Colombia, Bolivia, Chile, Argentina, Brazil, Ecuador, Austria, New Zealand, Singapore, Malasyia, Indonesia, Thailand, Vietnam, Ukraine, Turkey,Sauid Arabia, Qatar, U.A.E,Israel,India, UK, France, Italy, Gernmany, Poland, Spain,... We have successfully implemented the orders of Cross Country Pipelines for our valuable customers. In addition, we have also developed a huge network of contacts and strategic alliances with most important manufacturers as stockists around the world.