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Inconel 625 Pipe Tube is a high-performance nickel-chromium alloy renowned for its exceptional strength, corrosion resistance, and ability to withstand extreme temperatures. This alloy is widely used in demanding environments where other materials fail, such as chemical processing, aerospace, and marine applications. Its superior mechanical properties make it suitable for both welded and seamless pipe constructions.

The chemical composition of Inconel 625 includes nickel, chromium, molybdenum, and niobium, providing excellent resistance to oxidation, pitting, and crevice corrosion. This unique blend allows Inconel 625 Pipe Tube to maintain its structural integrity in highly corrosive environments, including seawater and acidic solutions. The alloy’s flexibility also makes it ideal for applications involving thermal cycling or stress corrosion

Inconel 625 contains approximately 58% nickel, 21–23% chromium, 8–10% molybdenum, and small amounts of niobium, iron, and cobalt. The addition of niobium stabilizes the alloy, enhancing high-temperature strength and preventing sensitization. This unique composition allows the material to resist pitting, crevice corrosion, and stress corrosion cracking even in chloride-rich or highly corrosive environments.

Inconel 625 pipes and tubes exhibit exceptional mechanical properties, including tensile strength ranging from 690–830 MPa and yield strength between 415–515 MPa. The elongation is typically 30–40%, providing ductility and flexibility under mechanical and thermal stress. These properties make Inconel 625 suitable for high-pressure piping, structural components, and critical industrial systems.

Inconel 625 Pipe Tubes and Tubes

Mechanically, Inconel 625 Pipe Tube offers high tensile and yield strength even at elevated temperatures. It exhibits excellent creep and fatigue resistance, ensuring long-lasting performance in high-pressure systems. These properties make it a preferred choice for heat exchangers, pressure vessels, and gas turbines where durability and reliability are critical.

Inconel 625 Pipe Tube is available in various forms, including seamless and welded pipes, to meet different industrial requirements. It comes in multiple dimensions and thicknesses, ensuring compatibility with a wide range of piping systems. Manufacturers often provide customized solutions to suit specific engineering needs, ensuring precise fit and performance.

The pipes and tubes provide outstanding resistance to a wide variety of corrosive environments, including oxidizing and reducing agents, acids, and seawater. They resist pitting, crevice corrosion, and stress corrosion cracking, making them suitable for chemical processing plants, offshore oil and gas pipelines, desalination units, and marine applications where durability is essential.

Inconel 625 pipes and tubes are generally supplied in a solution-annealed condition to optimize corrosion resistance and mechanical performance. They can be welded using standard nickel alloy welding procedures, with careful control of heat input to maintain the alloy’s properties. Cold working operations such as bending, flanging, and forming are also feasible, offering versatility in fabrication.

Specification Table

Property Specification
Alloy Type Inconel 625 (Nickel-Chromium-Molybdenum Alloy)
Standard ASTM B443, ASME SB443, ASTM B444, ASME SB444
Form Seamless Pipe, Welded Pipe, Tube
Size Range OD: 1/4" to 24" | Thickness: 0.035" to 2"
Applications Chemical Processing, Marine, Aerospace, Power Generation
Corrosion Resistance Excellent resistance to oxidation, pitting, and crevice corrosion
Temperature Range Up to 2000°F (1093°C) depending on application

Chemical Composition (Typical ranges for SSS32760)

Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.

Element Composition (%)
Nickel (Ni) 58.0 min
Chromium (Cr) 20.0 – 23.0
Molybdenum (Mo) 8.0 – 10.0
Niobium + Tantalum (Nb + Ta) 3.15 – 4.15
Cobalt (Co) ≤ 1.0
Iron (Fe) 5.0 max
Copper (Cu) ≤ 0.5
Manganese (Mn) 0.5 max
Silicon (Si) 0.5 max
Carbon (C) 0.10 max
Phosphorus (P) 0.015 max
Sulfur (S) 0.015 max
Aluminum + Titanium (Al + Ti) ≤ 0.4

Mechanical Properties (Typical)

Property Value
Tensile Strength (MPa) 830 – 1000
Yield Strength (MPa) 415 – 620
Elongation (%) 30 – 40
Hardness (HRB) ≤ 95
Impact Strength Excellent, suitable for cryogenic and high-temperature applications
Temperature Range Up to 1093°C (2000°F)
Creep Resistance Outstanding at elevated temperatures
Fatigue Resistance Excellent, suitable for cyclic loading

Equivalent Grades

Standard Equivalent Grade
UNS N06625
EN / European 2.4856
Werkstoff (Germany) 2.4856
JIS / Japanese NCF 625
BS / British NA 19
ASTM / ASME B443 / SB443

Dimension & Weight Chart (Selected common sizes)

Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.

Nominal Pipe Size (NPS) Outside Diameter (mm) Wall Thickness (mm) Weight per Meter (kg/m)
1/2" 21.3 2.77 1.27
3/4" 26.7 2.87 1.68
1" 33.4 3.38 2.31
1 1/2" 48.3 4.55 4.48
2" 60.3 4.85 5.81
3" 88.9 5.49 9.98
4" 114.3 6.02 15.21
6" 168.3 7.11 27.50
8" 219.1 8.18 44.20
10" 273.0 9.27 66.80
12" 323.9 10.31 92.50

Types Of Inconel 625 Pipe Tubes and Tubes

Seamless Pipe

SS S32760 Seamless Pipe

Welded Pipe

SS S32760 Welded Pipe

ERW Pipe

SS S32760 ERW Pipe

EFW Pipe

SS S32760S EFW Pipe

Seamless Tube

Low Temperature Carbon Steel A333S Seamless Tube

Welded Tube

S32760H Super Duplex Steel Welded Tube

Capillary Tube

S32760 Super Duplex Steel Capillary Tube

Heat Exchanger Tubes

S32760H Super Duplex Steel Heat Exchanger Tubes

Frequently Asked Questions (FAQ)

Q1: What is Inconel 625 Pipe Tube?

Inconel 625 Pipe Tube is a high-performance nickel-chromium alloy pipe known for its excellent corrosion resistance, high strength, and ability to withstand extreme temperatures. It is widely used in chemical, marine, aerospace, and power generation applications.

Q2: What are the key properties of Inconel 625 Pipe Tube?

The pipe offers superior tensile and yield strength, outstanding corrosion resistance, excellent creep and fatigue resistance, and stability at high temperatures, making it suitable for harsh operating conditions.

Q3: In which industries is Inconel 625 Pipe Tube used?

It is commonly used in chemical processing, petrochemical, marine, aerospace, power generation, and offshore industries where durability and resistance to corrosion are critical.

Pipes & Tubes Supplier

Mumbai, Delhi, Kolkata, Chennai, Bengaluru, Hyderabad, Ahmadabad, Pune, Surat, Jaipur, Kanpur, Lucknow, Nagpur, Ghaziabad, Indore, Coimbatore, Kochi, Patna, Kozhikode, Thrissur, Vadodara, Agra, Malappuram, Thiruvananthapuram, Kannur, Ludhiana, Nashik, Noida, Madrid, Sharjah, Moscow, Hong Kong, Lagos, Montreal, Bogota, Los Angeles, New Delhi, Jeddah, Chennai, Kanpur, Edmonton, Istanbul, Bhopal, Calgary, Ulsan, Rio de Janeiro, Colombo, Cairo, Ludhiana, Indore, Thane, Dubai, Seoul, Santiago, Kuwait City, Dammam, Tehran, Busan, Rajkot, Nagpur, La Victoria, Bangkok, Granada, Lahore, Manama

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