For purchasing managers in the aerospace, energy, and semiconductor industries, sourcing high-performance GH4169 sheet metal (equivalent to Inconel 718) can be a headache. The most common pain points include:
Poor flatness: Sheet metal warps, requiring secondary leveling before CNC machining.
Surface defects: Deep scratches or dents can affect the industrial durability of the final part.
Delayed delivery: Non-standard large sizes or custom thicknesses of sheet metal can take months to arrive.
Lack of protection: Sheet metal arrives without protective film, making it vulnerable to damage during transport.
At Gnee Steel, we eliminate these risks. As a Tier 1 supplier, we focus on providing "ready-to-use" GH4169 sheet metal with high-precision flatness, ultra-clean surfaces, and fast global shipping.
Contact Gnee Steel professionals for a quote on GH4169 steel plates
GH4169 (718 alloy) sheet metal supplier
GH4169 (718 alloy) sheet metal supplier
GH4169 (also known as Inconel 718, UNS N07718, or 2.4668) alloy sheet is a precipitation-hardening nickel-based superalloy sheet commonly used in sheet form for high-temperature, high-strength applications, particularly in the aerospace and energy industries. It exhibits excellent creep rupture strength at temperatures up to 700°C (approximately 1300°F), while also possessing good weldability and corrosion resistance.
What is Inconel 718 alloy?
It is a nickel-chromium-iron-molybdenum alloy.
Inconel 718 (GH4169) alloy is an age-hardening nickel-chromium-iron-molybdenum alloy. Age hardening is achieved through the addition of specific niobium, titanium, and aluminum. It can be delivered in either solution-annealed or hardened condition.
1. GH4169 steel plate specifications
We have wholesale stock of cold-rolled thin plates (for precision stamping parts) and hot-rolled thick plates (for heavy structural parts).
| Product Type | Thickness Range | Width | Length | Surface Finish |
| Cold Rolled Sheet | 0.5mm – 4.0mm | Up to 1200mm | Up to 3000mm | Bright Annealed / Polished |
| Hot Rolled Plate | 4.0mm – 50.0mm | Up to 2000mm | Up to 6000mm | No.1 / Sandblasted / Peeled |
| Large Dimensions | Custom Forged | Up to 3000mm | Up to 8000mm | Custom Fabrication |
All sheets are available with single- or double-sided PVC or PE protective film to ensure zero surface defects.
2. Chemical composition (weight percentage) of GH4169 alloy steel plate
| Elements | Min.(≥) | Max.(≤) |
|---|---|---|
| C | - | 0.03 |
| Cr | 17.0 | 21.0 |
| Mo | 2.80 | 3.30 |
| Ni | 50.0 | 55.0 |
| Al | 0.20 | 0.60 |
| Nb | 4.75 | 5.50 |
| Fe | - | Remainder |
| Si | - | 0.35 |
| Mn | - | 0.35 |
| P | - | 0.015 |
| S | - | 0.015 |
| B | - | 0.006 |
3. Mechanical properties of GH4169 alloy steel plate
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell NMness (HBW) |
|---|---|---|---|---|---|---|
| 544 (≥) | 692 (≥) | 14 | 13 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 331 |
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4. Precision Machining of GH4169 Alloy Sheets
Avoid material waste. Our custom machining center offers precision cutting services tailored to your CAD drawings:
Precision Laser Cutting: Suitable for complex shapes and thin sheets, with high dimensional accuracy.
Waterjet Cutting: Ideal for thick-walled GH4169 sheets, preventing the formation of the heat-affected zone (HAZ) and maintaining the structural integrity of the material.
Precision Leveling: We ensure that every sheet meets the most stringent flatness tolerances required for aerospace automated assembly lines.
5. GH4169 Plate Global Standard Compliance and Quality Assurance
Our materials are produced using VIM + VAR (Vacuum Induction Melting + Vacuum Arc Remelting) to ensure they meet the most rigorous Aerospace Grade standards.
Aerospace Standards: AMS 5596, AMS 5597.
Industrial Standards: ASTM B670, ASME SB670.
Certification: Every shipment includes a complete EN 10204 3.1 Mill Test Certificate (MTC) documenting chemical heat analysis and mechanical properties.
Testing: 100% Ultrasonic Testing (UT) and dimensional verification are standard procedures.
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6. Common Applications of GH4169 Alloy Steel
Aerospace: Jet engine casings, turbine components, and high-strength fasteners.
Energy: Gas turbine components, nuclear reactors.
Oil & Gas: Offshore technical equipment.
Why choose to source GH4169 plates from Gnee Steel?
✅️Reliable Supplier: We serve global aerospace engine manufacturers and high-temp furnace builders with consistent quality.
✅️Massive In-Stock Inventory: We stock common thicknesses (2mm, 5mm, 10mm, 20mm) for Fast Delivery within 7-10 business days.
✅️Wholesale Pricing: Benefit from Direct Factory Price on both small-batch trial orders and large-scale bulk procurement.
✅️Global Logistics: Optimized export packaging in reinforced seaworthy crates ensures your plates arrive in perfect condition.
Gnee Steel GH4169(inconel 718) Certificate
Contact us for the latest export price quote for GH4169 Alloy
FAQ
Q1: Do you offer GH4169 plates with protective film?
A: Yes. For aerospace and medical applications where surface finish is critical, we provide sheets with PVC or PE protective film. This prevents any scratching during handling, laser cutting, or shipping.
Q2: Can you provide GH4169 plates that are "dead flat"?
A: Absolutely. We understand that CNC vacuum tables require extreme flatness. We use advanced Precision Leveling machines to provide plates that meet or exceed standard commercial flatness requirements.
Q3: Is GH4169 equivalent to Alloy 718?
A: Yes. GH4169 is the Chinese designation that maps directly to Inconel 718 (UNS N07718). Our plates are fully interchangeable with Alloy 718 in all international engineering specifications.
Q4: Can you handle custom shapes and large-scale engineering projects?
A: Yes. We provide Bulk Discounts and dedicated project management. Whether you need thousands of stamped washers or massive 50mm thick reactor baffles, we have the capacity to deliver.
