For CNC laser processing workshops and aerospace manufacturers, sourcing large-size GH4169 (Inconel 718 equivalent) sheet metal is a high-risk investment. The industry faces two major pain points:
Laser/plasma cutting head collisions: Residual stresses from improperly hot-rolled or annealed sheet metal can lead to bending or warping. On automated vacuum chuck platforms, this results in costly laser cutting head collisions, tool damage, and workpiece scrap.
Delivery cycle bottlenecks: Standard rolling mills processing non-standard thickness sheet metal or custom blanking require 12-16 weeks of lead time, causing catastrophic delays to maintenance and production schedules.
At Gnee Alloy, we eliminate these bottlenecks. As a Tier 1 manufacturer, we offer aerospace-grade sheet metal with guaranteed absolute precision flatness, and maintain a large wholesale inventory for immediate shipment.
Click to get a GH4169 product quote
Aerospace-grade AMS 5596 GH4169 Precision Cutting Thin Sheet Size Guide
Aerospace-grade AMS 5596 GH4169 Precision Cutting Thin Sheet Size Guide
AMS 5596 (Inconel 718 / GH4169) is a premium aerospace-grade nickel-based alloy designed for high-strength, corrosion-resistant sheet metal applications. It is typically supplied in a solution-treated state for subsequent machining.
Is Inconel 718 a nickel-based superalloy?
Inconel 718 is a nickel-based super alloy that is well suited for applications requiring high strength in temperature ranges from cryogenic up to 1400°F.
1. Chemical composition of GH4169 sheet (weight %) – per AMS 5596
| Element | Content (%) | AMS 5596 Requirement | Function |
|---|---|---|---|
| Nickel (Ni) | 50.0 – 55.0 | 50.0 – 55.0 | Matrix element; high-temperature stability |
| 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; 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 |
| Manganese (Mn) | ≤ 0.35 | ≤ 0.35 | Deoxidizer |
| Silicon (Si) | ≤ 0.35 | ≤ 0.35 | Deoxidizer |
| Phosphorus (P) | ≤ 0.015 | ≤ 0.015 | Ensures toughness |
| Sulfur (S) | ≤ 0.015 | ≤ 0.015 | Ensures hot workability |
| Boron (B) | 0.002 – 0.006 | 0.002 – 0.006 | Grain boundary strengthener |
| Cobalt (Co) | ≤ 1.00 | ≤ 1.00 | Residual element |
| Copper (Cu) | ≤ 0.30 | ≤ 0.30 | Residual element |
| Tantalum (Ta) | ≤ 0.05 | ≤ 0.05 | Residual element |
2. High-temperature mechanical properties of GH4169 steel plate (aging state)
| Temp (°C) | Temp (°F) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Strength Retention |
|---|---|---|---|---|---|
| 20 (RT) | 68 | ≥ 1275 | ≥ 1035 | ≥ 12 | 100% |
| 300 | 572 | ~1200 | ~1000 | ~15 | 94% |
| 400 | 752 | ~1180 | ~980 | ~15 | 92% |
| 500 | 932 | ~1150 | ~950 | ~16 | 90% |
| 600 | 1112 | ~1100 | ~900 | ~18 | 86% |
| 650 | 1202 | ~1000 | ~850 | ~20 | 78% |
| 700 | 1292 | ~850 | ~750 | ~22 | 66% |
| 760 | 1400 | ~600 | ~550 | ~25 | 47% |
Click to download the GH4169 alloy PDF file now
3. GH4169 steel plate precision cutting sheet dimensions and specifications
| Parameter | Range | Tolerance (Precision Cut) |
|---|---|---|
| Thickness | 0.25 mm – 4.0 mm (0.010″ – 0.156″) | ±0.02 – ±0.05 mm |
| Length | Up to 3000 mm (120″) | ±0.5 mm |
| Width | Up to 1200 mm (48″) | ±0.5 mm |
| Flatness | – | ≤ 1.0 mm/m |
| Squareness | – | ≤ 0.5 mm/m |
| Burr Height | – | ≤ 0.05 mm |
Common Precision Cut Sheet Sizes
| Thickness (mm) | Thickness (in) | Typical Application |
|---|---|---|
| 0.25 – 0.50 | 0.010 – 0.020 | Heat shields, honeycomb cores |
| 0.50 – 1.00 | 0.020 – 0.040 | Ducting, liners |
| 1.00 – 2.00 | 0.040 – 0.080 | Engine casings, structural panels |
| 2.00 – 3.00 | 0.080 – 0.120 | Support structures |
| 3.00 – 4.00 | 0.120 – 0.156 | Heavy-duty components |
4. Custom processing of GH4169 Plate
Precision waterjet cutting: Suitable for thick plates (up to 50 mm), eliminating the heat-affected zone (HAZ) and maintaining the original structural integrity of the material.
Precision waterjet cutting
Laser blanking: High-speed cutting of thin plates (0.5 mm - 4.0 mm), strictly meeting the tolerance requirements of CAD drawings.
Laser blanking
On-demand blank cutting: We offer discs, rings, and complex combustion canister shapes, significantly reducing your secondary processing labor costs.
5. Available sizes and processing options for GH4169 sheet metal
| Product Type | Thickness Range | Standard Dimensions | Manufacturing Standard | Commercial Edge |
| Cold Rolled Sheet | 0.5 mm - 4.0 mm | 1000x2000mm / 1219x2438mm | AMS 5596, AMS 5597 | Precision Flatness |
| Hot Rolled Plate | 4.0 mm - 50.0 mm | 1500x3000mm / Custom | ASTM B670, SB670 | Heavy Structural Load |
| Custom Cut Blanks | All Thicknesses | Cut to CAD Drawings | ISO 9001 / AS9100 | Zero Material Waste |
Contact us to customize GH4169 products to fit your project dimensions
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅️Direct Factory Price: Eliminate middleman markups and secure original manufacturer rates for bulk procurement.
✅️VIM + VAR Purity: Double vacuum melting ensures zero non-metallic inclusions, maximizing the High-Cycle Fatigue life of your aerospace parts.
✅️Global Logistics: Fast and secure shipping to USA, Europe, UAE, and Southeast Asia in reinforced export crates.
✅️Small Order Support: Flexible MOQs on in-stock materials to support prototype development and R&D.
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 your GH4169 plate fully compliant with AMS 5596?
A: Yes. GH4169 is the technical equivalent designation used in international blueprints for Inconel 718 (UNS N07718). Our sheets meet all chemical, mechanical, and grain-size requirements of AMS 5596.
Q2: How do you prevent edge cracking during high-pressure waterjet cutting?
A: Cracking occurs when material contains internal inclusions or residual stress. Our VIM+VAR melting ensures an ultra-clean matrix, and our full solution annealing relieves all stress, guaranteeing clean, crack-free edges.
Q3: Can you provide plates in the "Fully Aged" state (AMS 5597)?
A: Yes. While solution-treated is standard for machine shops, we can provide Fully Aged plates (36-44 HRC) if your project requires immediate high-strength structural stability without secondary heat treatment.
Q4: Do you offer bulk discounts for aerospace maintenance programs (MRO)?
A: Absolutely. As a Tier-1 Supplier, we offer tiered Wholesale Pricing and dedicated inventory reserves for long-term contract partners.
