ISO 9001 certified manufacturer of ASTM B444 Inconel 625 coiled tubes, offering high-quality Nickel Alloy 625 coiled tubing, UNS N06625 seamless coiled tubes, precision coiled tubes, and ASME SB444 Alloy 625 tubing. We supply WNR 2.4856 coiled tubes, Inconel 625 heat exchanger and instrumentation coiled tubing, available in OD 6mm–25.4mm with superior corrosion and high-temperature performance.
New Eagle Industrial Corporation supplies premium-grade Inconel 625 coiled tubes engineered for extreme operating environments where conventional stainless steels fail. Manufactured in accordance with ASTM B444 / ASME SB444, these tubes deliver outstanding resistance to high-temperature oxidation, chloride-induced corrosion, and aggressive chemical media.
UNS N06625 / WNR 2.4856 coiled tubes are produced in seamless and precision-drawn forms, ensuring uniform microstructure, tight dimensional tolerances, and superior mechanical integrity. With excellent fatigue strength and creep resistance, these coiled tubes maintain stability in continuous service up to 980°C, even under fluctuating pressure and temperature cycles. Each coil is manufactured with smooth internal surfaces to enhance flow efficiency and reduce scaling in long-term service.
We deliver Alloy 625 coiled tubing solutions for offshore platforms, chemical processing units, power generation systems, high-pressure instrumentation, and advanced heat-exchanger assemblies. The alloy’s ability to resist pitting, crevice attack, and stress corrosion cracking in seawater and acidic environments makes it a trusted material for demanding operational conditions. Our coils are available in OD 6mm to 25.4mm with custom wall thicknesses, lengths, and spool packaging to meet project-specific requirements.
Every coil is supplied with ISO 9001:2015 certification, MTC as per EN 10204 3.1, NACE MR0175 compliance, and complete inspection documentation. Advanced non-destructive testing, including eddy-current, hydrostatic, and ultrasonic examination, ensures reliable performance and zero leakage under severe loading. With a focus on precision manufacturing and timely global delivery, We stand as a dependable source for high-performance Inconel 625 seamless coiled tubes for critical industries.
Inconel 625 Coil Tubing ASTM B444 – Technical Specifications
High-temperature Inconel 625 coil tubes – Chemical Composition
Inconel 625 coiled tubes derive their exceptional strength and corrosion resistance from a high-nickel, chromium, molybdenum, and niobium-rich composition optimized for extreme environments.
| Element | Percentage (%) |
|---|---|
| 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 |
| Iron (Fe) | 5.0 max |
| Carbon (C) | 0.10 max |
| Manganese (Mn) | 0.50 max |
| Silicon (Si) | 0.50 max |
| Phosphorus (P) | 0.015 max |
| Sulfur (S) | 0.015 max |
| Aluminium (Al) | 0.40 max |
| Titanium (Ti) | 0.40 max |
| Cobalt (Co) | 1.0 max |
PED approved Inconel 625 coiled tubes – Mechanical Properties
Inconel 625 coiled tubes offer high tensile strength, excellent ductility, and superior fatigue resistance, making them reliable for high-pressure and high-temperature service conditions.
| Property | Value |
|---|---|
| Tensile Strength | 827 MPa (120 ksi) min |
| Yield Strength (0.2% Offset) | 414 MPa (60 ksi) min |
| Elongation | 30% min |
| Hardness | ≤ 220 HB |
| Melting Point | 1290–1350°C |
| Density | 8.44 g/cm³ |
| Modulus of Elasticity | 207 GPa |
| Impact Strength | High (excellent at low & high temperatures) |
ASTM B444 Alloy 625 coiled tubes – Equivalent Grades
Inconel 625 coiled tubes are globally recognized under UNS N06625, WNR 2.4856, and multiple international equivalents, ensuring compatibility with diverse engineering and procurement standards.
| Standard | Grade |
|---|---|
| UNS | N06625 |
| Werkstoff Nr. (WNR) | 2.4856 |
| EN | NiCr22Mo9Nb |
| AFNOR | NC22DNb |
| BS (British Standard) | NA21 |
| GOST | ХН60МБ (KhN60MБ) |
| JIS | NCF 625 |
| ASTM | Inconel 625 (ASTM B444 / B446) |
How does the corrosion resistance of Inconel 625 compare to other nickel alloys?
- Superior to Inconel 600 & 601: Inconel 625 has higher molybdenum (Mo) and niobium (Nb) content, which enhances resistance to pitting, crevice, and intergranular corrosion in oxidizing and acidic environments.
- Better than Monel 400: While Monel 400 resists general corrosion well, Inconel 625 outperforms in high-temperature and highly acidic or oxidizing conditions.
- High-Performance Applications: Used in chemical plants, marine offshore piping, and high-temperature heat exchangers, where longevity and minimal maintenance are critical.
- Resistance to Chlorides: Excellent for chloride-rich environments, preventing stress corrosion cracking that could compromise safety in industrial systems.
Can Inconel 625 coiled tubes be welded or fabricated?
- Weldability: These tubes are fully weldable using TIG (GTAW), MIG (GMAW), and plasma welding techniques, making them adaptable for various fabrication needs.
- Fabrication Flexibility: Can be bent, coiled, or shaped without compromising mechanical properties, supporting complex piping and instrumentation designs.
- Post-Weld Heat Treatment: Proper post-weld solution annealing or stress-relief treatment ensures the corrosion resistance and structural integrity are fully preserved.
- Industrial Applications: Ideal for heat exchangers, chemical processing lines, and instrumentation systems that require welded connections in high-temperature and corrosive environments.
What makes Inconel 625 coiled tubes superior to conventional stainless steel tubing?
- High Tensile Strength: Inconel 625 offers exceptional tensile and yield strength, enabling it to withstand high-pressure environments that would deform standard stainless steel tubes.
- Excellent Creep & Fatigue Resistance: It maintains mechanical integrity under prolonged high-temperature and cyclic loading conditions, ideal for power plants, turbines, and high-temperature piping.
- Outstanding Corrosion Resistance: The combination of nickel, chromium, and molybdenum provides superior resistance to oxidation, pitting, crevice corrosion, and chloride-induced stress corrosion cracking.
- Extreme Environment Suitability: Perfect for chemical, marine, and offshore applications, where conventional stainless steel may fail due to corrosion or thermal degradation.
Global Export Network for Inconel 625 Coil Tubing
As a trusted manufacturer and exporter, New Eagle Steel supplies Alloy 625 coiled Tubes globally. Our high-performance products are widely used in chemical processing, pollution control, marine, and pharmaceutical industries across Europe, the Middle East, Asia, and the Americas, ensuring exceptional corrosion resistance, reliability, and precision engineering.
- Middle East: United Arab Emirates (UAE), Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Yemen, Iran, Iraq, Israel, Jordan, Lebanon, Syria, Turkey
- North Africa: Egypt, Algeria, Morocco, Tunisia, Libya
- Asia Pacific: Singapore, Malaysia, Vietnam, Indonesia, Thailand, Philippines, Cambodia, Laos, Myanmar, Brunei, Timor-Leste, Taiwan, Japan, South Korea
- Europe: Spain, Belgium, Netherlands, France, Germany, Italy, United Kingdom (England), Poland, Cyprus, Malta, Russia
- Americas: Brazil, Mexico, Chile, Peru, Colombia, Argentina, United States (USA), Canada
- India: Chennai, Coimbatore, Bangalore, Thiruvananthapuram, Pune, Kolkata, Kerala, Karnataka, Gujarat, Mumbai, Delhi
Top Application Industries Using ASTM B444 Inconel 625 Coiled Tubes
Oil & Gas Industry
Petrochemical & Chemical Processing
Power Generation (Thermal, Nuclear & Renewable)
Marine & Offshore Engineering
Pharmaceuticals & Biotechnology
Food, Beverage & Dairy Processing
Pulp & Paper Industry
Aerospace & Defense
Automotive & Transportation
Instrumentation & Control Systems
Water Treatment & Desalination
HVAC & Heat Exchanger Systems
Construction & Infrastructure Projects
Mining & Metallurgy
