AMS 5590 GH4169 (Inconel 718) Seamless Pipe For High-Temp environment
We specialize in manufacturing seamless steel pipes that meet AMS 5590 GH4169 standards. Through precipitation hardening treatment, they provide industry-leading creep rupture resistance in extreme thermal environments.
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
- Send E-mail: ss@gneesteel.com
- Tel: +8615824687445
Gnee Super Alloy (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of AMS 5590 GH4169 (Inconel 718) Seamless Pipe For High-Temp environment in China. If you're going to wholesale high quality AMS 5590 GH4169 (Inconel 718) Seamless Pipe For High-Temp environment made in China, welcome to get free sample from our factory. Good service and reasonable price are available.
Our AMS 5590 GH4169 (Inconel 718) seamless steel tubes are designed for heavy industrial applications and are a replacement for standard nickel-based alloys. Unlike ordinary steel tubes, our AMS 5590 steel tubes undergo a rigorous precipitation hardening (age hardening) process, significantly improving their mechanical strength and high-temperature durability.
To ensure the highest structural integrity, our manufacturing process combines vacuum induction melting (VIM) and electroslag remelting (ESR). This dual melting technology removes impurities and ensures a uniform microstructure, enabling it to withstand the most demanding gas turbine and chemical processing environments.
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GNEE GH4169 high-temp Pipe introduce
AMS 5590 GH4169 (Inconel 718) seamless steel pipe is a high-strength, corrosion-resistant nickel-chromium alloy designed for extreme environments, operating effectively in temperatures ranging from low temperatures to 1300°F (704°C). It is widely used in aerospace fluid systems and power plants, exhibiting exceptional tensile strength, fatigue strength, and creep rupture resistance, with oxidation resistance up to 1800°F (982°C).
AMS 5590 GH4169 Tube Description
| Feature | Specification |
| Material Grade | GH4169 / Inconel 718 / UNS N07718 |
| Heat Treatment | Solution & Precipitation Hardened (Ageing) |
| Melting Process | VIM + ESR (Ultra-high Purity) |
| Operating Temp | Effective up to 700°C (1300°F) |
| Creep-Rupture Life | Superior to AMS 5589 in aged condition |
| Available Sizes | OD 10mm - 219mm; WT 1mm - 25mm |
| Compliance | AMS 5590, ASTM B670, GJB 2296A |
Note: AMS 5590 is specifically designed for thin-walled Inconel 718 tubing used in high-temperature aerospace applications. It is similar to AMS 5589, but for even thinner-walled tubing and may include welded tubing under certain conditions.
GNEE GH4169 Tube Specification Sheet
Chemical Composition (wt%) – per AMS 5590 (UNS N07718)
| Element | Content (%) | Standard Requirement | Notes |
|---|---|---|---|
| Nickel (Ni) | 50.0 – 55.0 | 50.0 – 55.0 | Matrix element; provides high-temperature stability |
| Chromium (Cr) | 17.0 – 21.0 | 17.0 – 21.0 | Oxidation and hot corrosion resistance |
| Iron (Fe) | Balance (~18-20) | Balance | Fe-Ni-Cr base alloy |
| Niobium (Nb) | 4.75 – 5.50 | 4.75 – 5.50 | Primary γ″ strengthening element for high-temperature strength |
| Molybdenum (Mo) | 2.80 – 3.30 | 2.80 – 3.30 | Solid-solution strengthening; enhances creep resistance |
| Titanium (Ti) | 0.65 – 1.15 | 0.65 – 1.15 | Forms γ′ strengthening phase |
| Aluminum (Al) | 0.20 – 0.80 | 0.20 – 0.80 | Forms γ′ strengthening phase |
| Carbon (C) | ≤ 0.08 | ≤ 0.08 | Low carbon for weldability |
| Manganese (Mn) | ≤ 0.35 | ≤ 0.35 | Deoxidizer |
| Silicon (Si) | ≤ 0.35 | ≤ 0.35 | Deoxidizer |
| Phosphorus (P) | ≤ 0.015 | ≤ 0.015 | Low for toughness |
| Sulfur (S) | ≤ 0.015 | ≤ 0.015 | Low for hot workability |
| Boron (B) | 0.002 – 0.006 | 0.002 – 0.006 | Grain boundary strengthener; improves creep life |
| Cobalt (Co) | ≤ 1.00 | ≤ 1.00 | Residual element |
| Copper (Cu) | ≤ 0.30 | ≤ 0.30 | Residual element |
| Tantalum (Ta) | ≤ 0.05 | ≤ 0.05 | Residual element |
Physical properties of GH4169 pipe
| Property | Value | |
|---|---|---|
| Density | 8.19 g/cm³ | |
| Melting Range | 1260 – 1336°C | |
| Thermal Conductivity (20°C) | 11.4 W/m·K | |
| Thermal Conductivity (500°C) | ~16.0 W/m·K | |
| Thermal Conductivity (700°C) | ~19.0 W/m·K | |
| Coefficient of Thermal Expansion (20-100°C) | 13.0 × 10⁻⁶/°C | |
| Coefficient of Thermal Expansion (20-600°C) | ~14.5 × 10⁻⁶/°C | |
| Coefficient of Thermal Expansion (20-700°C) | ~15.5 × 10⁻⁶/°C | |
| Specific Heat (20°C) | 435 J/kg·K | |
| Specific Heat (600°C) | ~500 J/kg·K | |
| Modulus of Elasticity (20°C) | ~200 GPa (29.0 × 10⁶ psi) | |
| Modulus of Elasticity (600°C) | ~175 GPa (25.4 × 10⁶ psi) | |
| Poisson's Ratio | 0.29 – 0.30 | |
| Electrical Resistivity | 1.25 µΩ·m | |
| Magnetic Permeability | 1.005 (slightly magnetic) |
Click to download the GH4169 alloy PDF file now
AMS 5590 Nickel Alloy GH4169 Tube Dimensions and Specifications
Common AMS 5590 GH4169 thin-walled tube dimensions
| OD (in) | OD (mm) | Wall (in) | Wall (mm) | Typical Application |
|---|---|---|---|---|
| 0.125 | 3.18 | 0.016 | 0.41 | High-temp instrumentation |
| 0.188 | 4.78 | 0.020 | 0.51 | Engine control lines |
| 0.250 | 6.35 | 0.025 | 0.64 | Bleed air lines |
| 0.312 | 7.92 | 0.028 | 0.71 | Fuel system lines |
| 0.375 | 9.53 | 0.032 | 0.81 | Hydraulic lines |
| 0.500 | 12.70 | 0.035 | 0.89 | Afterburner fuel lines |
| 0.625 | 15.88 | 0.042 | 1.07 | High-temp air ducts |
Contact us to customize GH4169 products to fit your project dimensions
Main Applications of GH4169 Alloy Tubes
Power Generation: High-temperature fasteners, gaskets, and internal piping for gas turbines.
Aerospace: Exhaust systems and manifolds for high-pressure gas environments.
Chemical and Petrochemical Industries: Heat exchangers and structural piping for corrosive, high-temperature chemical environments.
Oil and Gas Industries: Downhole tools and high-strength piping for acidic gas wells.
GH4169 Nickel Alloy pipe quality inspection specifications
Gnee Alloy as a trusted supplier, Gnee Steel adheres to a "zero-defect" principle. Every GH4169 seamless pipe undergoes a rigorous inspection process before shipment.
Eddy Current Testing (ET): Used to detect minute cracks and defects on and near the surface of pipes.
Ultrasonic Testing (UT): For thick-walled or pressure-critical pipes, it detects deep defects such as internal inclusions and porosity, conforming to AMS 2630 requirements.
Hydrostatic Testing: Each pipe must undergo high-pressure hydrostatic testing to ensure no leakage or deformation under rated operating pressure.
GNEE Group GH4169 superalloy Packaging
GNEE Group GH4169 superalloy Packaging
Contact us to choose your preferred packaging and shipping method
Why choose to source AMS 5590 GH4169 high-temperature steel pipes from us?
✅️Superior creep rupture resistance: Our special heat treatment process ensures that the steel pipes maintain their shape and strength even under sustained stress at high temperatures.
✅️Industrial-grade durability: Perfect for high-pressure systems requiring extremely high corrosion and oxidation resistance.
✅️Wholesale pricing: As a direct manufacturer, we offer bulk discounts and the most competitive factory prices on the market.
✅️Global export certifications: We provide complete international shipping documentation, including Material Testing Certificate (MTC), ultrasonic testing report, and certificate of origin.
GH4169 certificate
Click to view our professional certificates for GH4169 alloy
FAQ
Q: Does AMS 5590 differ from AMS 5589?
A: Yes. While both cover GH4169/718, AMS 5590 typically specifies the "Solution and Precipitation Heat Treated" (Aged) condition, whereas AMS 5589 is generally for the "Solution Annealed" condition. AMS 5590 offers significantly higher hardness and tensile strength.
Q: Why do you use VIM + ESR melting for these pipes?
A: Gas turbines and high-temp fasteners require zero internal defects. VIM removes dissolved gases, and ESR eliminates non-metallic inclusions, resulting in a cleaner material that excels in fatigue and fracture toughness tests.
Q: Can you produce large-diameter heavy-wall AMS 5590 pipes?
A: Yes, we have specialized hot-extrusion and cold-rolling equipment to produce heavy-wall seamless pipes with wall thicknesses up to 25mm.
Q: Are your pipes tested for high-temperature oxidation?
A: Yes, our material laboratory conducts oxidation and corrosion resistance tests to ensure the pipes perform reliably in service temperatures up to 700°C.
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