As a leading name among inconel 625 pipe suppliers, TSM TECHNOLOGY CO provides high-performance inconel 625 pipes and inconel 625 tubes engineered for the most demanding environments. Whether you require b444 inconel 625 tube for aerospace ducting or inconel 625 seamless pipe for deep-sea oil extraction, our materials deliver unmatched resistance to corrosion, oxidation, and high-pressure fatigue.
Engineered for Extreme Environments: Inconel 625 Alloy tubes
Inconel 625 (UNS N06625 / W.Nr. 2.4856) is a nickel-chromium-molybdenum superalloy renowned for its high strength and outstanding aqueous corrosion resistance. The strength of inconel 625 tubes is derived from the solid-solution strengthening effect of molybdenum and niobium on its nickel-chromium matrix, eliminating the need for precipitation hardening.
At TSM TECHNOLOGY CO, our inconel 625 welded tubes and seamless variants are designed to withstand temperatures ranging from cryogenic levels up to 1800°F (982°C). This stability makes us one of the most trusted inconel 625 tube suppliers for critical infrastructure projects globally.
Technical Specifications & Material Data
Chemical Composition
The superior performance of inconel 625 pipe is a result of its precise elemental balance. High nickel content ensures resistance to chloride-ion stress corrosion cracking, while chromium and molybdenum provide pitting and crevice corrosion protection.
| Grade | Ni | Cr | Fe | C | Mn | Si | Mo | Co | Al | Ti | Nb + Ta | P | S |
| Inconel 625 | 58.0 min | 20.0 – 23.0 | 5.0 max | 0.10 max | 0.50 max | 0.50 max | 8.0 – 10.0 | 1.0 max | 0.40 max | 0.40 max | 3.15 – 4.15 | 0.015 max | 0.015 max |
Mechanical Properties
Our b444 inconel 625 tube products meet or exceed the requirements of ASTM B444 Grade 1 (Annealed) and Grade 2 (Solution Annealed).
| Property | Grade 1 (Annealed) | Grade 2 (Solution Annealed) |
| Tensile Strength (min) | 120 ksi (827 MPa) | 100 ksi (690 MPa) |
| Yield Strength (0.2% Offset) | 60 ksi (414 MPa) | 40 ksi (276 MPa) |
| Elongation (min) | 30% | 30% |
| Hardness (max) | 25 HRC | 20 HRC |
Physical Properties
Designing with inconel 625 pipes requires precise physical data to account for thermal expansion and conductivity in high-heat systems.
| Physical Property | Value |
| Density | 8.44 g/cm³ (0.305 lb/in³) |
| Melting Range | 1290 - 1350°C (2350 - 2460°F) |
| Specific Heat | 410 J/kg·°C |
| Thermal Conductivity (at 20°C) | 9.8 W/m·°C |
| Electrical Resistivity | 1.29 μΩ·m |
Manufacturing Variants: Seamless vs. Welded
Inconel 625 Seamless Pipe
Inconel 625 Seamless Pipe is a seamless tubing manufactured through hot extrusion or piercing processes. It boasts excellent corrosion resistance, high temperature resistance, and high pressure resistance, making it suitable for harsh environments such as chemical, marine engineering, and aerospace applications.
Standard:ASTM B444 / ASME SB444
Inconel 625 Welded Tubes
Inconel 625 Welded Tubes are tubing made from Inconel 625 alloy sheets or strips through cold rolling and welding. They offer lower cost and high dimensional accuracy, making them suitable for medium- and low-pressure environments, such as heat exchangers and condensers.
Standard:ASTM B705 / B704
Inconel 625 Tube Sizes & Schedule Chart
Choosing the right Inconel 625 pipe size is crucial for the suitability of your project. TSM TECHNOLOGY CO. maintains a large inventory of standard and custom sizes. Below is reference information on commonly used NPS specifications for Inconel 625 pipe.
| NPS (inch) | OD (mm) | SCH 10 (WT mm) | SCH 40 (WT mm) | SCH 80 (WT mm) |
| 1/2" | 21.34 | 2.11 | 2.77 | 3.73 |
| 3/4" | 26.67 | 2.11 | 2.87 | 3.91 |
| 1" | 33.40 | 2.77 | 3.38 | 4.55 |
| 1.5" | 48.26 | 2.77 | 3.68 | 5.08 |
| 2" | 60.33 | 2.77 | 3.91 | 5.54 |
| 3" | 88.90 | 3.05 | 5.49 | 7.62 |
| 4" | 114.30 | 3.05 | 6.02 | 8.56 |
| 6" | 168.28 | 3.40 | 7.11 | 10.97 |
Note: Custom wall thicknesses and metric sizes are available upon request for any inconel 625 tubes order.
Inconel 625 Pipe Price
The inconel 625 pipe price is influenced by global nickel and molybdenum market fluctuations, as well as the complexity of the manufacturing process (seamless vs. welded). At TSM TECHNOLOGY CO, we leverage our large-scale production capabilities to offer competitive rates without compromising on the quality that top-tier inconel 625 pipe suppliers are known for.
Why Choose TSM TECHNOLOGY CO?
•Certified Quality: All products undergo 100% radiography, eddy current, and hydrostatic testing.
•Global Logistics: Rapid shipping for standard inconel 625 tubes and customized project spools.
•Technical Support: Expert guidance on choosing between Grade 1 and Grade 2 for your specific thermal requirements.
Contact us today for a real-time quote and technical consultation.
Frequently Asked Questions
What is the difference between Inconel 625 Grade 1 and Grade 2?
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Grade 1 is annealed at lower temperatures (1600-1900°F) for maximum strength and fatigue resistance. Grade 2 is solution-annealed (2000-2200°F) for maximum ductility and creep-rupture strength above 1200°F.
How do you weld Inconel 625 tubes effectively?
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Alloy 625 has excellent weldability. It is typically welded using GTAW (TIG) or GMAW (MIG) processes with ERNiCrMo-3 filler metal to maintain corrosion resistance in the weld seam.
Why is Inconel 625 more expensive than stainless steel?
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The high inconel 625 pipe price is due to its high nickel (min 58%) and molybdenum (8-10%) content, which are significantly more expensive than the iron and chromium used in standard stainless grades.
What are the common standards for Inconel 625 tubes?
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The most common standards are ASTM B444 (Seamless), ASTM B705 (Welded), and AMS 5581 (Aerospace Tubing).
Who are the leading Inconel 625 tube suppliers for small orders?
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TSM TECHNOLOGY CO supports both small-scale prototyping and large-scale industrial mill runs with dedicated expediting services.
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