For CNC machine tool shops and aerospace sheet metal manufacturers, sourcing GH4169 (equivalent to Inconel 718) sheet metal presents two major risks:
Laser/plasma cutting head collision: Standard "commercial-grade" sheet metal often has internal residual stress, causing the sheet to bend or deform. This can lead to expensive laser cutting head collisions and damage to the workpiece.
Delivery time: Non-standard sized sheet metal can take 12-16 weeks to deliver, which can significantly impact project schedules.
At Gnee Alloy, we address these issues at their source. As a Tier 1 supplier, Gnee Alloy provides aerospace-grade sheet metal with guaranteed precision flatness and offers professional custom machining services, delivering ready-to-use blanks directly to your workshop.
Click to inquire about the dimensions and today's price of GH4169 steel plates in stock
GH4169 Uns N07718 Nickel Alloy Plate for Aerospace Applications Procurement Guide
GH4169 Uns N07718 Nickel Alloy Plate for Aerospace Applications Procurement Guide
GH4169 (UNS NO7718) alloy sheet is a high-strength, corrosion-resistant, precipitation-hardening nickel-chromium superalloy sheet designed for extreme temperature environments up to 700°C (1300°F). Commonly known as Inconel 718, it is the material of choice for aerospace engine components, turbine blades, and high-stress structures due to its superior tensile strength, fatigue strength, and creep rupture resistance.
What are the uses of Inconel 718?
What are the uses of Inconel 718?
Inconel 718 is one of the most commonly used alloys in metal additive manufacturing (MAM), widely used in aircraft, gas turbines, turbocharger rotors, and a variety of other corrosive and structural applications, with a maximum operating temperature of approximately 700 °C.
1. GH4169 Aerospace Sheet Material description
| Parameter | Description |
|---|---|
| Material | GH4169 (UNS N07718 / Inconel 718) |
| Product Form | Aerospace Grade Plate, Sheet, Strip |
| Applicable Standards | AMS 5596, AMS 5597, ASTM B670, GE S400, PWA 1009 |
| Condition | Solution Treated + Aged (Hard) or Solution Treated (Soft) |
| Melting Process | VIM + VAR (double melt – mandatory) |
2. GH4169 sheet Chemical Composition (wt%) – Aerospace Grade (per AMS 5596)
| Element | Content (%) | AMS 5596 Requirement | Function |
|---|---|---|---|
| Nickel (Ni) | 50.0 – 55.0 | 50.0 – 55.0 | Matrix element; provides high-temperature stability and corrosion resistance |
| Chromium (Cr) | 17.0 – 21.0 | 17.0 – 21.0 | Oxidation and corrosion resistance |
| Iron (Fe) | Balance (~18-20) | Balance | Fe-Ni-Cr base alloy |
| Niobium (Nb) | 4.75 – 5.50 | 4.75 – 5.50 | Core strengthening element – forms γ″ phase (Ni₃Nb) |
| 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 (Ni₃(Al,Ti)) |
| Aluminum (Al) | 0.20 – 0.80 | 0.20 – 0.80 | Forms γ′ strengthening phase; improves oxidation resistance |
| Carbon (C) | ≤ 0.08 | ≤ 0.08 | Low carbon for toughness and fatigue resistance |
| Manganese (Mn) | ≤ 0.35 | ≤ 0.35 | Deoxidizer |
| Silicon (Si) | ≤ 0.35 | ≤ 0.35 | Deoxidizer |
| Phosphorus (P) | ≤ 0.010 | ≤ 0.015 (AMS stricter) | Ensures toughness |
| Sulfur (S) | ≤ 0.005 | ≤ 0.015 (AMS stricter) | Ensures hot workability |
| Boron (B) | 0.002 – 0.006 | 0.002 – 0.006 | Grain boundary strengthener; improves stress rupture 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 |
Click to download the GH4169 alloy PDF file now
GH4169 Aerospace Sheet Metal Manufacturing
Precise Flatness: The Perfect Partner for CNC Machine Tools
Our GH4169 sheet metal undergoes advanced multi-roll leveling after vacuum solution annealing.
Zero Collision Guarantee: Our "absolutely flat" sheet metal ensures seamless automated laser and waterjet cutting, protecting your high-end equipment.
Microstructural Uniformity: Refined through VIM + VAR processes, our sheet metal exhibits uniform mechanical properties across the entire surface, preventing "springback" after forming.
Custom Machining: Waterjet-Cut Blanks for Direct Assembly
No need to pay for unused material. Our custom machining centers utilize high-pressure waterjet technology to deliver "near-net-shape" parts.
No Heat Affected Zone (HAZ): Unlike laser or plasma cutting, waterjet cutting maintains the structural integrity of GH4169 sheet metal edges, eliminating the need for costly secondary edge grinding.
Blueprint Precision: We cut according to your precise CAD drawings, delivering discs, rings, or complex gaskets directly to your assembly line.
5. GH4169 Sheet Material Inventory Size Chart (Standard and Custom)
| Product Type | Thickness Range | Standard Width | Standard Length | Compliance |
| Cold Rolled Sheet | 0.5 mm – 4.0 mm | 1000 / 1219 mm | 2000 / 3000 mm | AMS 5596 |
| Hot Rolled Plate | 4.0 mm – 50.0 mm | Up to 2000 mm | Up to 6000 mm | ASTM B670 |
| Forged Block | 50.0 mm – 200 mm | Custom | Cut-to-Size | ASME SB670 |
Contact us to customize GH4169 products to fit your project dimensions
Why choose Gnee Alloy?
✅️Direct Factory Pricing: Eliminate the middleman markups and secure the best rates for bulk energy and aerospace projects.
✅️MTC 3.1 Traceability: Full EN 10204 3.1 documentation included, ensuring your project passes all Quality Assurance audits.
✅️Fast Delivery: We support AOG (Aircraft on Ground) and emergency maintenance with dispatch within 48 hours for in-stock items.
✅️Protective Coating: Sheets are supplied with PVC or PE film to ensure a zero-scratch Smooth Finish.
Gnee Steel GH4169 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 Steel GH4169 Product Packing
Contact us for the latest export price quote for GH4169 Alloy
FAQ
Q1: Is GH4169 interchangeable with Inconel 718 plate?
A: Yes. GH4169 is the technical equivalent of UNS N07718. Our materials meet all chemical and mechanical requirements of AMS 5596, making them globally interchangeable for aerospace liners and turbine parts.
Q2: How do you guarantee the flatness of thin 0.8mm sheets?
A: We use specialized vacuum-furnace annealing and precision tension-leveling. Every sheet is inspected on a certified granite surface plate before being packed in reinforced wooden crates.
Q3: Can you provide plates in the "Fully Aged" state (AMS 5597)?
A: Yes. While solution-treated is standard for forming, we can provide Fully Aged plates (36-44 HRC) if you require immediate high-strength structural stability without further heat treatment.
Q4: Do you offer bulk discounts for petrochemical reactor baffles?
A: Absolutely. As a leading Wholesale Supplier, we offer tiered pricing models and dedicated project management for large-tonnage procurement.
