In high-risk projects such as aerospace, nuclear power, and oil and gas, the biggest hidden cost is the friction associated with supplier switching. Purchasing managers often spend weeks coordinating different pipe mills, bar forging plants, and plate suppliers-each with varying quality standards.
At Gnee Alloy, we eliminate this bottleneck. As a Tier 1 supplier, Gnee Alloy can provide high-purity GH4169 (equivalent to Inconel 718/UNS N07718) in various semi-finished forms required by your drawings. By centralizing your procurement with us, you can ensure the structural integrity and metallurgical consistency of the entire assembly.
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Supplier of GH4169 (Inconel 718) nickel alloy full range of products: tubes, bars, and plates
Supplier of GH4169 (Inconel 718) nickel alloy full range of products: tubes, bars, and plates
GH4169, commonly known as Inconel 718 (UNS N07718, 2.4668), is a high-strength, corrosion-resistant nickel-chromium superalloy ideal for high-temperature applications up to 700°C. Multiple suppliers offer a full range of GH4169 products, including tubes, bars, and plates, and provide international shipping services.
Is Inconel 718 difficult to machine?
This nickel-based superalloy is a common material in the aerospace industry, possessing excellent strength and heat resistance-but these very properties make it extremely difficult to machine. Inconel 718 is prone to rapid work hardening, generating extremely high temperatures at the tool-workpiece interface, thus accelerating tool wear.
Available Alloy 718 Products
Inconel 718 Round Bars
Inconel 718 round bars are available in a variety of sizes and are suitable for manufacturing high-stress components. The products are divided into two main categories:
Standard Round Bars: Available in standard diameters for general applications.
Forged Round Bars: Designed for high-strength, heavy-duty applications, typically used in critical structural components.
Common Sizes and Specifications:
Diameter: 0.125 inches to 12 inches (3.18 mm to 304.8 mm)
Length: Standard lengths are typically 12 feet to 20 feet (3.66 meters to 6.1 meters), custom lengths are also available.
Specifications: ASTM B637, AMS 5662, UNS N07718
Heat Treatment: Solution treated, temperature range 1700°F to 1850°F (926°C to 1010°C)
Inconel 718 Steel Plate
Inconel 718 steel plate is designed for heavy-duty applications. The plates are generally categorized as follows:
Hot-rolled steel plate: Suitable for large cross-sections requiring high-temperature performance.
Cut steel plate: Pre-cut to specific dimensions, ideal for manufacturing or repair work.
Available sizes and specifications:
Thickness: 0.250″ to 6″ (6.35 mm to 152.4 mm)
Width: 48″ to 96″ (1219.2 mm to 2438.4 mm)
Length: 96″ to 240″ (2438.4 mm to 6096 mm)
Specifications: ASTM B670, AMS 5596, UNS N07718
Heat treatment: Solution treated at temperatures of 1700°F to 1850°F (926°C to 1010°C)
Inconel 718 Pipes
Inconel 718 pipes are commonly used in high-temperature and high-pressure applications. These products are categorized as follows:
Seamless Pipes: Manufactured without seams or welds, resulting in higher strength and greater resistance to extreme environments.
Round Pipes: The most common type of pipe used in fluid and gas flow applications.
Common Sizes and Specifications:
Pipe Dimensions:
Outer Diameter (OD): 0.250″ to 4″ (6.35 mm to 101.6 mm)
Wall Thickness: 0.035″ to 0.250″ (0.89 mm to 6.35 mm)
Length: Custom lengths available
Specifications: ASTM B167, ASTM B423, AMS 5589 UNS N07718
4. GH4169 Alloy Chemical Composition (wt%) – Common for All Forms
| GH4169(inconel 718) | Element | Content (%) | Function |
|---|---|---|---|
|
|
Nickel (Ni) | 50.0 – 55.0 | Matrix element; high-temperature stability |
| Chromium (Cr) | 17.0 – 21.0 | Oxidation and corrosion resistance | |
| Iron (Fe) | Balance (~18‑20) | Fe‑Ni‑Cr base alloy | |
| Niobium (Nb) | 4.75 – 5.50 | Core strengthening element – γ'' former (Ni₃Nb) | |
| Molybdenum (Mo) | 2.80 – 3.30 | Solid‑solution strengthening; creep resistance | |
| Titanium (Ti) | 0.65 – 1.15 | γ' strengthening (Ni₃(Al, Ti)) | |
| Aluminum (Al) | 0.20 – 0.80 | γ' strengthening; oxidation resistance | |
| Carbon (C) | ≤ 0.08 | Low carbon for toughness | |
| Manganese (Mn) | ≤ 0.35 | Deoxidizer | |
| Silicon (Si) | ≤ 0.35 | Deoxidizer | |
| Phosphorus (P) | ≤ 0.015 | Ensures toughness | |
| Sulfur (S) | ≤ 0.015 | Ensures hot workability | |
| Boron (B) | 0.002 – 0.006 | Grain boundary strengthener | |
| Cobalt (Co) | ≤ 1.00 | Residual element | |
| Copper (Cu) | ≤ 0.30 | Residual element |
Click to download the GH4169 alloy PDF file now
5. Room temperature mechanical properties of GH4169 alloy (aging condition)
| Property | Tube | Bar | Plate |
|---|---|---|---|
| Tensile Strength, Ultimate (MPa) | ≥ 1275 | ≥ 1275 | ≥ 1275 |
| Tensile Strength, Yield (MPa) | ≥ 1035 | ≥ 1035 | ≥ 1035 |
| Elongation (%) | ≥ 12 | ≥ 12 | ≥ 12 (L), ≥ 10 (T) |
| Reduction of Area (%) | ≥ 15 | ≥ 15 | – |
| Hardness (HRC) | 35 – 40 | 35 – 40 | 35 – 40 |
| Modulus of Elasticity (GPa) | ~200 | ~200 | ~200 |
| Poisson's Ratio | 0.29 – 0.30 | 0.29 – 0.30 | 0.29 – 0.30 |
6. GH4169 Alloy Full Supply Scope and Standard Comparison Table
| Product Form | Dimension Range | Standard Compliance | Commercial Usage |
| Round Bar | 10mm - 450mm | AMS 5662, ASTM B637 | Turbine discs, engine shafts. |
| Seamless Tube | OD 6mm - 219mm | AMS 5589, ASTM B167 | High-pressure fuel lines. |
| Plate / Sheet | 0.5mm - 50mm | AMS 5596, ASTM B670 | Combustion liners, casings. |
7. Gnee Alloy's GH4169 Product Advantages
Sourcing from a specialist factory means obtaining materials designed specifically for industrial durability.
Zero "Spots": Our computer-controlled Vacuum Annealing (VAR) process prevents macrosegregation in large-diameter bars.
Precise Flatness: Our sheets undergo advanced tension leveling, crucial for automated laser cutting.
Bright Annealing (BA): Our seamless tubes feature a mirror-like inner diameter (ID) to prevent scale contamination in fuel systems.
Why choose to partner with Gnee Alloy?
✅️Direct Factory Price: Eliminate middleman markups and secure the best Wholesale Pricing for bulk energy and defense projects.
✅️MTC 3.1 & 3.2 Traceability: Every shipment is accompanied by a full Mill Test Certificate documenting heat analysis and room/high-temp mechanical data.
✅️Fast Global Shipping: With a massive In-Stock Inventory, we offer dispatch within 48-72 hours for standard sizes to the USA, Europe, and Asia.
✅️Custom Fabrication: We offer precision Cut-to-Length, centerless grinding (h8-h11), and custom waterjet blanking.
Gnee Alloy GH4169(inconel 718) Certificate
📦 Packaging and Shipping
All Nickel Based Alloy products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
Gnee Alloy GH4169 Product Packing
Contact us for the latest export price quote for GH4169 Alloy
FAQ
Q1: Is GH4169 truly identical to Inconel 718 for international projects?
A: Yes. GH4169 is the technical equivalent used within the GB/T standard system for the exact same metallurgical system as UNS N07718. It is globally interchangeable in 99% of aerospace and nuclear blueprints.
Q2: Can you provide the material in the "Solution Treated" or "Fully Aged" state?
A: We provide both. For machine shops, we recommend the Solution Treated condition (approx. 20-25 HRC) to reduce tool wear. For structural projects, we provide Fully Aged material (36-44 HRC) ready for immediate service.
Q3: Do you support small-batch prototype orders across multiple forms?
A: Absolutely. We support aerospace innovation with Flexible MOQs. You can bundle bars, sheets, and tubes in a single trial shipment to verify our quality.
Q4: How do you handle NDT (Non-Destructive Testing)?
A: Every meter of our material undergoes 100% Ultrasonic (UT) and Eddy Current (ET) testing. We guarantee zero internal voids and surface defects.
