In aerospace, oil and gas, and energy projects involving significant stakes, the cost of time often translates into gains or losses amounting to millions of dollars. For procurement managers, a pervasive industry pain point is the "material lead-time gap." Since most Tier-1 steel mills operate on a "make-to-order" basis, procuring Inconel round bars frequently entails a lengthy waiting period of 12 to 16 weeks.
The bottlenecks we resolve for you include:
Delivery Delays: Emergency maintenance (MRO) or new prototype development projects stalling due to material shortages.
Non-Standard Specification Challenges: The difficulty of sourcing large-diameter forged bars or ultra-precision bright bars in small quantities.
Material Substitution Risks: Being compelled to procure uncertified materials because "name-brand" products are out of stock.
At Gnee Alloy, we have completely eliminated these risks. As a Tier-1 manufacturer, we maintain a vast, year-round inventory of ready-to-ship stock-poised for immediate global dispatch-ensuring that the quality and durability of your industrial applications remain absolutely uncompromised.
Click to get an Inconel 625 product quote
Inconel 600/625/718 Round Bar Supplier
Inconel 600/625/718 Round Bar Supplier
Inconel 600, 625, and 718 are premium nickel-chromium superalloys renowned for their exceptional strength, oxidation resistance, and ability to withstand extreme temperatures and corrosive environments. They are widely used in the aerospace, chemical, and shipbuilding industries.
What are the differences between Inconel 600 and 718?
Inconel 600 exhibits excellent corrosion resistance and formability, making it suitable for applications in chemical processing and marine environments. In contrast, Inconel 718 possesses exceptional high-temperature strength and creep resistance, making it the preferred material for applications in the aerospace and oil and gas sectors.
1. Inconel 600/625/718 Round Bars Equivalent Grade
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| Inconel 600 | 2.4816 | N06600 | NCF 600 | NA 13 | МНЖМц 28-2,5-1,5 | NC15FE11M | NiCr15Fe |
| Inconel 625 | 2.4856 | N06625 | NCF 625 | NA 21 | ХН75МБТЮ | NC22DNB4M | NiCr22Mo9Nb |
| Inconel 718 | 2.4668 | N07718 | NCF 718 | – | – | – | – |
2. Inconel 600/625/718 Round Bars Chemical Composition
| Grade | C | Mn | Si | Cu | S | Fe | Mo | Ni | Cr |
| Inconel 600 | 0.15 max | 1 max | 0.50 max | 0.50 max | 0.15 min | 6.0-10.0 | – | 72 min | 14.0–17.0 |
| Inconel 625 | 0.10 max | 0.50 max | 0.50 max | – | 0.15 min | 5.0 max | – | 58.0 min | 20.0–23.0 |
| Inconel 718 | 0.08 max | 0.35 max | 0.35 max | 0.30 max | 0.15 min | – | – | 50.0-55.0 min | 17.0–21.0 |
3. Comparison of Room-Temperature Mechanical Properties of Inconel 600, 625, and 718
| Property | Inconel 600 (Annealed) | Inconel 625 (Annealed) | Inconel 718 (Aged) | Advantage |
|---|---|---|---|---|
| Tensile Strength, Ultimate (MPa) | 550 – 620 | ≥ 830 | ≥ 1275 | 718 (~2x 600) |
| Tensile Strength, Yield (MPa) | 205 – 240 | ≥ 415 | ≥ 1035 | 718 (~4-5x 600) |
| Elongation (%) | 30 – 40 | ≥ 30 | ≥ 12 | 600/625 more ductile |
| Reduction of Area (%) | ≥ 50 | ≥ 40 | ≥ 15 | 600 highest |
| Hardness | 80-85 HRB | ~22 HRC | 35 – 40 HRC | 718 hardest |
| Modulus of Elasticity (GPa) | ~207 | ~207 | ~200 | Similar |
| Poisson's Ratio | 0.29-0.30 | 0.29-0.30 | 0.29-0.30 | Similar |
| Density (g/cm³) | 8.42-8.47 | 8.44 | 8.19 | 718 lightest |
Click to download the Inconel 625 alloy PDF file now
4. Inconel 600/625/718 Bar Dimensions and Specifications
| Alloy Grade | Diameter Range | Supply State | Technical Standard | Primary Use Case |
| Inconel 600 | 10mm - 300mm | Solution Treated | ASTM B166 | Furnace parts, Nuclear. |
| Inconel 625 | 5mm - 250mm | Bright / Peeled | ASTM B446 | Marine, Acid Reactors. |
| Inconel 718 | 10mm - 450mm | AMS 5662/5663 | Aerospace Grade | Turbine discs, Fasteners. |
5. Inconel 600/625/718 Rod: Characteristics and Applications
Alloy 600
Key Characteristics: A solid-solution strengthened alloy. It is renowned for its excellent mechanical properties, as well as its exceptional resistance to oxidation and corrosion in high-temperature environments.
Common Applications: Furnace components, chemical and food processing equipment, heat-treating fixtures.
Alloy 625
Key Characteristics: Combines enhanced resistance to corrosion and oxidation with high tensile strength. It exhibits exceptional tolerance to acidic media and possesses excellent weldability.
Common Applications: Marine engineering, nuclear reactor components, aerospace exhaust systems.
Alloy 718
Key Characteristics: A precipitation-strengthened alloy designed to deliver ultimate yield and tensile strength in high-temperature environments (up to 700°C).
Common Applications: Gas turbine engines, rocket engine components, critical downhole oil and gas equipment.
5. Inconel 600/625/718 Bars - Precision and Custom Machining Services
Don't let raw material dimensions limit your CNC efficiency. We provide "Machine-Ready" solutions:
Centerless Grinding: Achieving ultra-tight h8, h9, and h10 tolerances on precision rods (5mm-50mm).
Cut-to-Length Service: Precision bandsaw cutting to deliver exact blanks, reducing your material waste and freight costs.
Surface Finishes: Choose between Hot-Rolled (Black), Peeled (Smooth), or Bright Ground (Mirror finish Ra ≤ 0.4μm).
6. Gnee Alloy Inconel Quality Assurance
As a Reliable Supplier, we provide the transparency your international audit demands:
100% UT Integrity: Every bar undergoes Ultrasonic Testing (AMS 2154 Class A) to ensure zero internal voids or "freckles."
MTC 3.1 Traceability: Full EN 10204 documentation provided with every heat analysis.
Industrial Durability: Every batch is verified for grain size and mechanical strength at elevated temperatures.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅️Direct Factory Price: Eliminate the 15-25% markup from international trading agents and secure original manufacturer rates.
✅️Bulk Discounts: We offer tiered pricing for large-scale energy infrastructure projects and recurring OEM supply.
✅️Small MOQ for Stock Items: We support Innovation and R&D by offering a 1pc MOQ for standard stock diameters.
✅️Global Fast Shipping: Optimized logistics to minimize lead times to Europe, USA, and Southeast Asia within 5-7 business days.
Gnee Alloy inconel 625 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 625 Alloy Product Packing
Contact us for the latest export price quote for 625 Alloy
FAQ
Q1: Is your GH3625/GH4169 interchangeable with Inconel 625/718?
A: Absolutely. GH3625 and GH4169 are the technical equivalent designations used within the GB system for UNS N06625 and UNS N07718. We provide the technical parity certificates required to ensure project compliance.
Q2: Can you provide fully aged Inconel 718 bars (AMS 5663)?
A: Yes. We stock bars in both the Solution Treated (AMS 5662) state for easier machining and the Fully Aged (AMS 5663) state for peak strength (36-44 HRC).
Q3: How do you protect the bars during sea freight?
A: We utilize export-standard seaworthy packaging, including anti-rust coating, waterproof plastic wrapping, and reinforced wooden crates to ensure your material arrives in Zero-Defect condition.
Q4: Do you offer bulk discounts for annual MRO contracts?
A: Yes. We specialize in long-term supply agreements for aerospace maintenance centers and petrochemical refineries, providing dedicated stock reserves and fixed processing rates.
