ASTM B983 GH4169 seamless steel pipe is suitable for the petrochemical industry
ASTM B983 GH4169 seamless steel pipe is suitable for the petrochemical industry
The ASTM B983 standard, combined with the high-performance GH4169 nickel-based superalloy material, makes the resulting seamless steel pipes ideal for demanding applications in the petrochemical industry, especially those involving extreme temperatures, high pressures, and corrosive environments.
What is the composition of GH4169 alloy?
The chemical composition of GH4169 alloy is as follows: Ni 53.44%, Cr 18.56%, Mo 3.02%, Nb 5.3%, Al 0.44%, Ti 1.04%, C 0.026%, P 0.005%, S 0.001%, B 0.002%, Fe balance (wt.%).
Chemical composition of ASTM B983 GH4169 seamless steel pipe
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Inconel 718 | 0.08 max | 0.35 max | 0.35 max | 0.015 max | 0.30 max | - | 50.00 - 55.00 | 17.00 - 21.00 |
Mechanical properties of GH4169 round tube
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Inconel 718 | 8.2 g/cm3 | 1350 °C (2460 °F) | Psi – 1,35,000 , MPa – 930 | Psi – 75,000 , MPa – 482 | 45 % |
Key Information
Standard Specification (ASTM B983): This is the standard specification for precipitation-hardened or cold-worked seamless nickel alloy tubing. It ensures that the material meets the specific mechanical and performance standards required for high-stress applications.
Material (GH4169 High Temperature Alloy): GH4169, also known as Inconel 718 in other standards, is a nickel-chromium-iron-based high temperature alloy. Its key characteristics make it ideal for harsh industrial applications:
High Strength: It possesses extremely high yield strength (ranking first among many wrought high temperature alloys below 650°C) and excellent mechanical properties, enabling it to withstand extremely high internal pressure and tensile forces.
Corrosion and Oxidation Resistance: This alloy exhibits excellent resistance to a wide range of corrosive fluids, high-pressure steam, volatile chemicals, and oxidation, which is crucial for chemical plants and refineries where pipelines are exposed to corrosive media.
Temperature Resistance: GH4169 exhibits good overall performance over a wide temperature range from -253°C to 700°C, allowing for long-term use in high-temperature applications without deformation or cracking.
Durability and Stability: GH4169 exhibits excellent fatigue resistance, radiation resistance, and long-term structural stability, thus extending its service life and reducing maintenance.
Weldability and Machinability: Compared to typical precipitation-strengthened superalloys, GH4169 possesses superior machinability and weldability, making it suitable for manufacturing complex components.
Suitable for the Petrochemical Industry
The seamless manufacturing process (ensuring uniform wall thickness and strength) combined with the superior properties of GH4169 alloy makes these pipes ideal for the petrochemical industry:
High-Pressure Fluid Systems: Seamless pipes made from this high-temperature alloy possess extremely high strength, making them ideal for high-pressure applications such as transporting crude oil, natural gas, and other derivatives.
High-Temperature Environments: Widely used in high-temperature environments such as furnace tubes, heat exchangers, boiler systems, and reactor piping.
Corrosive Environments: Capable of withstanding the corrosive chemical environments of refineries and chemical plants, preventing leaks and failures, and avoiding costly losses and hazards.
Critical Infrastructure: Due to their reliability and ability to operate under harsh conditions, these pipes are used as critical components in energy infrastructure and chemical processing, where safety and reliability are paramount.
Why Choose Gnee Nickel Alloy (Supplier Example)?
✅ Large stock of GH 4169 stainless steel strip/coil available for fast shipping.
✅ Factory direct sales, highly competitive prices, excellent value for money.
✅ Comprehensive quality assurance: Material Testing Certificate (MTC), Chemical Composition Certificate, and Mechanical Properties Certificate.
✅ Value-added services: Slitting, Cutting, Polishing, Surface Treatment.
✅ Worldwide shipping, secure and reliable packaging, and provision of export documentation.
Email: ss@gneemetal.com
Gnee Steel is a professional manufacturer of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs. For alloy material price inquiries or to request customized alloy material solutions, please feel free to contact us at ss@gneemetal.com for a quote.
