Incoloy 925 seamless tubes are suitable for sour-gas environments because of their nickel, chromium, and molybdenum content, which provides superior resistance to sulfide stress-corrosion cracking and pitting.
ASTM B983 Incoloy 925 Seamless Tube Manufacturer in China
We at Zhejiang Xintongda Special Steel Manufacturing Co., Ltd., are manufacturers and suppliers of Incoloy 925 tubes based in China. This 925 seamless tube is an age-hardenable nickel (38.0–46.0%), iron (minimum 22.0%), and chromium (19.5–23.5%) alloy. It also performs effectively due to controlled additions of molybdenum, copper, titanium, and aluminium. We manufacture this tube in accordance with the ASTM B983 standard. Our product is designed to provide exceptional stress-corrosion cracking resistance and reliable protection in both oxidising atmospheres and reducing environments. Our 925 seamless tube is meticulously measured by its outside diameter (OD) and wall thickness, ensuring it can handle high pressure and precise mechanical stresses due to superior precipitation hardening and work hardening capabilities. As a global supplier, we maintain an annual capacity of 25,000 tons. We deliver our in-stock products within one week and production orders in 15-60 days.
Product Specifications
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Standard
ASTM B983
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OD Range
6.35–257 mm
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Thickness
1-65 mm
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Length
≤ 22 m
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Technical Data
Technical Data
Manufacturing Process of Seamless Incoloy 925 Tubes
We manufacture high-quality 925 seamless tubes by selecting a round bar or a billet. This is followed by shaping through extrusion, and finishing with cold drawing to get the desired dimensions and a smooth surface quality. After that, the tubes undergo heat treatment to increase strength and resistance to stress-corrosion cracking. For a detailed description of the comprehensive process involved in tube production, the interested reader should refer to this webpage.
Key Features of Incoloy 925 Tube
Incoloy 925 tube has a unique combination of strength, corrosion resistance, and thermal stability, making it an ideal option for harsh environmental applications.
- Corrosion Resistance: This nickel-based alloy, with its substantial content of chromium and iron, provides outstanding protection in both oxidising and reducing environments, making it highly resistant to pitting and crevice corrosion. The addition of molybdenum enhances its resistance to stress-corrosion cracking in chloride and acidic environments.
- Service Temperature: The material exhibits high strength and outstanding corrosion resistance over a broad temperature range. This makes it ideal for both cryogenic and high-temperature applications up to approximately 1000°F (540°C).
- Heat Treatment: The alloy exhibits enhanced mechanical properties through carefully designed thermal treatment. Age-hardening or precipitation hardening, significantly improves yield strength by forming strengthening precipitates within the matrix.
- Mechanical Properties: The alloy exhibits exceptional tensile and yield strength following age hardening. This is essential for tubes which required to endure substantial internal pressure and mechanical stresses from bending in equipment such as heat exchangers.
- Workability: The alloy can be easily shaped, machined and welded using traditional procedures, even if work hardening and precipitation have reinforced it. This makes it easier to fabricate intricate incoloy 925 tubing systems.
Seamless Incoloy 925 Nickel Alloy Tube Equivalent Material
| GRADE | UNS | GB | JIS | ISO | DIN/EN | GOST | |
| ISC | NEW | ||||||
| Incoloy 925 | N09925 | GH169 | - | NCF925 | 9825 | 1.4883 | ЭП760 |
100% Certified Testing & Documentation
- EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
- Raw Materials Certificate
- 100% PMI
- Heat Treatment Charts
- Third-Party Inspection Report
- Surface roughness and size measurement
- Manufacturer Test Certificate (Impact Testing, Flattening, Flare, Bend, Hardness, Intergranular, Pitting Corrosion, Grain size, ET, UT, HT)
- Laboratory Test Certificate from the Government-Approved Lab
Where is Incoloy 925 Tube Used?
Incoloy 925 tubing is used in applications that require high strength and exceptional resistance to corrosive substances, particularly where resistance to stress-corrosion cracking is essential.
Oil and Gas
In the oil and gas industry, Incoloy 925 tubing performs well in downhole tubular assemblies, encompassing casing, tubing, and packer components. Due to its outstanding durability and resistance to sulfide stress-corrosion cracking, it is highly suitable for use in deep, sour-gas wells.
Marine
The alloy is used for offshore and marine applications, such as propeller shafts, fasteners, and wirelines, due to its exceptional resistance to chloride-ion corrosion.
Chemical Processing
In chemical processing plants, the tubing is used in heat exchanger tubing and pressure vessels where strong acids and aggressive chemicals are present in both oxidising and reducing environments.
Power Generation
The alloy is used for specific components of power generation systems, especially in areas subjected to high temperatures and corrosive water. It ensures sustained operational integrity and efficiency.
Aerospace
Incoloy 925 tubing is extremely durable due to its weight and can withstand high temperatures very well. This makes it ideal for a wide range of non-critical aerospace applications that require consistent mechanical performance.
Frequently Asked Questions
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What makes Incoloy 925 Seamless Tube suitable for sour-gas environments?
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What are the mechanical properties of the Incoloy 925 Seamless Tube?Incoloy 925 seamless tubes possess high tensile strength and yield strength, which are achieved through age-hardening methods like precipitation hardening
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How does the Incoloy 925 seamless tube compare to Incoloy 825 or 718?Compared with Incoloy 825, Incoloy 925 Seamless Tubing exhibits higher strength because it can be age-hardened. It also resists stress corrosion cracking better in chlorides and hydrogen sulfide environments than Incoloy 718.