For critical applications requiring strength, corrosion resistance, and reliability at high temperatures, Inconel 718 Tube is the ideal choice. As an experienced Inconel 718 tubing manufacturer and supplier from China, we combine years of expertise in materials metallurgy with precision manufacturing processes to provide high-quality products that ensure your project needs are met.
Overview of Inconel 718 Tube and Pipe
An Inconel 718 Tube is a tubular product manufactured from the nickel-chromium-based superalloy known as Inconel 718. This alloy is primarily composed of nickel (50-55%), chromium (17-21%), and significant additions of niobium (columbium), molybdenum, titanium, and aluminum. The tubes are produced through processes such as extrusion, pilgering, or drawing and are available in seamless and welded forms.
What makes Inconel 718 tubing unique is its high strength at extreme temperatures, excellent corrosion resistance, and superior weldability/processability, qualities not found in other commercial alloys.
Technical Specifications & Standards
Chemical Composition
|
C |
Mn |
Si |
P |
S |
Ni |
Cr |
B |
Mo |
Co |
Al |
Ti |
Nb |
Cu |
|
0.08 max |
0.35 max |
0.35 max |
0.015 max |
0.015 max |
50 – 55 |
17 – 21 |
0.006 max |
2.8 – 3.3 |
1.0 max |
0.2 – 0.8 |
0.65 – 1.15 |
4.75 – 5.5 |
0.3 max |
The performance of an inconel 718 seamless pipe is dictated by the precise balance of its elements. TSM monitors composition using advanced spectral analysis to ensure zero-defect quality.
Mechanical Properties
Our tubes undergo rigorous testing including tensile, yield, and hardness checks to meet the following aged-condition benchmarks:
| Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Hardness (Rockwell C) | Elongation |
| 8.2 g/cm3 | 1350 °C (2460 °F) | ksi≥185 , MPa ≥1275 | ksi≥150 , MPa ≥1035 | 36 - 44 HRC | ≥ 12% |
Manufacturing Standards
TSM TECHNOLOGY CO. supplies inconel 718 pipes and tubes that strictly adhere to international quality specifications:
•ASTM B163 / B516 / B983: Standard for seamless and welded nickel alloy condenser and heat exchanger tubes.
•ASME SB163 / SB516: Boiler and Pressure Vessel Code requirements.
Product Forms & Dimensions
Inconel 718 Seamless Tube
A homogeneous tube with no weld seam, offering superior strength and fatigue resistance under high pressure and temperatures up to 700°C. Ideal for critical aerospace and oil & gas components.
Standard：ASTM B163
OD：3.35mm - 101.6mm
WT：0.5mm - 15mm
Tolerance：H7 - H11
Inconel 718 Welded Pipe
A cost-effective solution formed by welding, suitable for larger diameters. Provides excellent corrosion resistance for general process piping, heat exchangers, and less critical high-temperature service.
Standard：ASTM B516,ASTM B829
OD：6.35mm - 1219mm
WT：1.0mm - 30mm
Testing：100% X-ray / Eddy Current
Regarding Inconel 718 Tubing Prices
As a professional supplier of Inconel 718 tube, we understand that cost is a primary concern for our clients. Inconel 718 tube prices fluctuate significantly, primarily influenced by nickel-niobium spot prices. Due to increasing demand in the aerospace industry and the expansion of the energy sector, Inconel 718 tubing prices have been on an upward trend in recent years.
To ensure our clients achieve the best return on investment, TSM TECHNOLOGY CO. offers the following services:
• Volume Pricing Strategy: Discounted prices are available for large-volume purchases and long-term supply agreements.
• Material Traceability: Every shipment comes with full EN 10204 3.1 certification
Whether you need small batches for initial project testing or large quantities of inconel 718 seamless pipe, we can provide transparent, real-time quotes with the best value.
Why TSM TECHNOLOGY CO., Ltd. is Your Trusted Partner
Choosing the right supplier is just as important as choosing the right materials. Extensive metallurgical experience and a globally recognized reputation are the main reasons why many customers trust us.
Expertise:For decades, we have accumulated rich experience in the metallurgy and manufacturing of high-performance titanium-nickel alloys.
Quality Certifications:We hold ISO 9001, AS 9100, AS9120, and PED certifications.
Global Logistics:With robust supply chain management, we can reliably and promptly deliver products to any location.
Technical Support:Our materials engineers provide comprehensive application guidance, from selection to processing and manufacturing.
FAQ
What is the difference between Inconel 625 and Inconel 718 tubes?
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While both are nickel-chromium alloys, Inconel 718 is precipitation-hardenable, meaning it can achieve much higher strength through heat treatment compared to Inconel 625, which is solid-solution strengthened. 718 is preferred for high-stress applications, while 625 is often chosen for its exceptional aqueous corrosion resistance.
What is the standard lead time for Inconel 718 seamless tube?
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For stock items, we can ship within 3-5 days. For custom manufacturing of inconel 718 seamless pipe, lead times typically range from 6 to 10 weeks, depending on the complexity and volume.
How does the "Aging" process affect the Inconel 718 tube price?
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The aging process involves holding the material at specific high temperatures for 8 to 18 hours. This extra energy consumption and furnace time do increase the cost compared to simple "Annealed" tubing, but it is necessary to reach the high-strength properties.
What surface finishes are available for Inconel 718 tubes?
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We offer several finishes, including Bright Annealed (BA), Pickled and Annealed, and Polished (up to 600 Grit) for specialized medical or semi-conductor applications.
Does TSM Technology Co. provide MTC (Material Test Certificates)?
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Yes, all shipments of inconel 718 pipes include a 3.1 or 3.2 Material Test Certificate according to EN 10204, detailing the chemical composition and mechanical test results.
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