In the aerospace and energy engineering fields, GH4169 alloy bars are widely recognized as the "gold standard." However, for purchasing managers and design engineers, the main pain points lie in their internal integrity and standards compliance.
Does the bar have a central void? Does it meet the stringent Class A ultrasonic testing requirements for rotating components? Is it suitable for high-stress aerospace fasteners?
At Gnee Steel, we address these issues through precision melting and forging processes. As a Tier 1 supplier, our GH4169 bars (equivalent to Inconel 718) are designed specifically for critical flight safety components and high-load industrial machinery.
Inquire about bulk pricing for GH4169 round bars and check inventory
Price of AMS 5662 GH4169 high temperature alloy bars
Price of AMS 5662 GH4169 high temperature alloy bars
The price of AMS 5662 GH4169 (Inconel 718) high-temperature alloy bars typically ranges from $15 to $40 per kilogram, depending on the quantity, surface finish, and manufacturer. Common market prices are around $22 to $35 per kilogram, with lower prices available for bulk orders of 100 kilograms or more.
What is GH4169 equivalent to?
Inconel 718
GH4169 (equivalent to the American brand Inconel 718) is a precipitation-hardened nickel-based superalloy, widely used in the aerospace industry because of its excellent mechanical properties (Lu et al., 2014).
Inconel 718 Round Bar Composition Standard
Ni |
Cr | Fe | Mo | Nb+Ta | C | Mn | Si | Ph | S | Ti | Cu | B | Al | Co | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 50 | 17 | Bal | 2.8 | 4.75 | - | - | - | - | - | 0.65 | - | - | 0.20 | - |
| Max | 55 | 21 | - | 3.3 | 5.50 | 0.08 | 0.035 | 0.35 | 0.015 | 0.015 | 1.15 | 0.30 | 0.0006 | 0.80 | 1.00 |
Mechanical properties of GH4169 bars
| Temperature (℃) | Yield Strength (0.2% MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HRC) |
| 20 (Room) | ≥ 1030 | ≥ 1270 | ≥ 12 | 36 - 44 |
| 650 (1200°F) | ≥ 860 | ≥ 1000 | ≥ 15 | - |
1. GH4169 Bar Forging Ratio and Ultrasonic Integrity Testing
The performance of GH4169 bar stock stems from its internal structure. We ensure its industrial durability through stringent metallurgical controls:
High Forging Ratio (≥ 4:1): Each forged bar is processed with a significant reduction ratio to ensure maximum grain refinement and eliminate dendrites. This is crucial for the fatigue resistance required for engine shafts.
Ultrasonic Testing (UT) - Grade A: We offer 100% ultrasonically tested bars, conforming to AMS 2154 standards or customer-specific standards. This ensures zero voids, zero inclusions, and zero cracks within the bar stock.
Vacuum Induction Melting + Vacuum Arc Remelting: Our bars are produced using a vacuum induction melting + vacuum arc remelting process, essential for achieving ultra-high purity in aerospace-grade GH4169.
Vacuum Induction Melting + Vacuum Arc Remelting
2. GH4169 Technical Specifications and Available Forms
We offer GH4169 bars in multiple finishes and heat-treatment states to fit your production line seamlessly.
Product Forms:
Bright Bar: Centerless ground or cold-drawn to h8, h9, or h11 tolerance. Perfect for automatic CNC machining of fasteners.
Forged Bar: Large diameters up to 400mm for turbine discs and heavy-duty structural parts.
Black/Peeled Bar: Hot-rolled or forged finish, ready for secondary processing.
Supply State: Available in Solution Treated (standard for machining) or Fully Aged (solution + double aging, ready for service).
Technical Standard Compliance:
Aerospace: AMS 5662 (Standard), AMS 5663 (High-strength forged).
Industrial: ASTM B637, DIN 17752.
Equivalent: Inconel 718, UNS N07718, W.Nr. 2.4668.
3. GH4169 Round Bar Pricing Factors and Market Insights
Price Range: US$15 to US$35 per kilogram (based on Chinese suppliers).
Bulk Discounts: Prices can be reduced to US$20 per kilogram or lower for orders exceeding 100 kilograms.
Shape/Surface: Bright bar stock/centerless grinding finish (a typical feature of AMS 5662) may be more expensive than rough-turned large-diameter bar stock.
Grade Details: AMS 5662 specifically refers to a solution-annealed nickel-chromium alloy, commonly used in critical aerospace fasteners and rotating components.
Market Availability: Easily available from distributors, typically listed as UNS N07718 or 2.4668. Certifications (e.g., AMS 5662/5663) significantly impact the final price.
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Why choose to source GH4169 bars from Gnee Steel?
✅️Wholesale Pricing: Benefit from Direct Factory Price with no middleman markups.
✅️Large Diameter Inventory: We maintain a massive stock of both small-diameter bright rods and large forged bars.
✅️MTC 3.1 Traceability: Full heat analysis and mechanical test reports included with every shipment.
✅️Cut-to-Length Service: We offer precision sawing to provide ready-to-use blanks, reducing your material waste and cost.
✅️Fast Global Shipping: Optimized logistics for Fast Delivery to aerospace and oil & gas hubs worldwide.
Gnee Steel 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
Contact us for the latest export price quote for GH4169 Alloy
FAQ
Q1: Why is AMS 5662 the preferred standard for GH4169 bars?
A: AMS 5662 ensures the material is supplied in the solution-treated condition with controlled grain size. This provides the best balance of machinability and the potential to reach peak strength after final double-aging.
Q2: Can your GH4169 bars be used for aerospace fasteners?
A: Absolutely. Our bright bars are centerless ground with a Smooth Finish and tight tolerances (h9/h10), making them ideal for high-speed thread rolling and CNC turning of aerospace bolts and studs.
Q3: What is the benefit of the VIM+VAR process?
A: VIM+VAR (Double Melting) removes harmful trace elements (Pb, Bi, Se, Te) and ensures a homogeneous chemical distribution. This is essential for preventing premature fatigue failure in rotating engine parts.
Q4: Do you offer trial orders for non-standard diameters?
A: Yes. We support prototype development and can provide custom forged round rods for non-stock sizes with flexible MOQ options.
