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ASTM A213 TP444 is a seamless ferritic-austenitic alloy steel tube designed for use in high-temperature and high-pressure environments. It is primarily utilized in heat exchangers, boilers, and other applications requiring excellent resistance to corrosion, oxidation, and thermal fatigue.
Key Features:
Material Composition: TP444 is a ferritic stainless steel with high chromium and molybdenum content, providing superior corrosion resistance, especially in chloride-rich environments.
Corrosion Resistance: Exceptional resistance to pitting and crevice corrosion, making it suitable for seawater and chemically aggressive environments.
High-Temperature Performance: Excellent resistance to scaling and oxidation at elevated temperatures, making it ideal for heat exchanger and boiler tubes.
Mechanical Properties: Good mechanical strength, ductility, and workability.
Weldability: The material is weldable using standard processes, though preheating and post-weld heat treatment may be necessary for optimal results.
The chemical composition of ASTM A213 TP444 seamless ferritic stainless steel is specified as follows:
Element
Composition (Weight %)
Carbon (C)
≤ 0.025
Manganese (Mn)
≤ 1.00
Phosphorus (P)
≤ 0.040
Sulfur (S)
≤ 0.030
Silicon (Si)
≤ 1.00
Chromium (Cr)
17.5 – 19.5
Molybdenum (Mo)
1.75 – 2.50
Nickel (Ni)
≤ 0.50
Nitrogen (N)
≤ 0.035
Iron (Fe)
Balance
Applications:
Heat exchangers
Condensers
Boiler tubes
Power generation equipment
Chemical and petrochemical industries
Standards and Specifications:
ASTM Standard: ASTM A213
Grade: TP444
Dimensions: Available in various sizes and thicknesses as per application requirements.
Testing: Includes non-destructive testing, hydrostatic testing, and other inspections to ensure compliance with ASTM standards.
Advantages of TP444:
High resistance to corrosion in chloride and sulfur-containing environments.
Improved thermal conductivity compared to austenitic stainless steels.
Reduced thermal expansion, minimizing the risk of deformation under thermal cycling.
Cost-effective alternative to austenitic stainless steels like TP316 or TP317 in specific applications.
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
YUHONG HOLDING GROUP is one of the largest Procurement, Engineering & Contracting Group companies in China. Our group branch company and factory have been already approved by : ABS, LR, DNV, GL, BV, CCS, KR, PED 97/23/EC, AD2000-WO, GOST9941-81, CCS, TS, CNNC, ISO9...
