In extreme environments, Inconel 625 sheet metal is the undisputed leader. As a nickel-chromium-molybdenum superalloy, it combines exceptional corrosion resistance with extremely high mechanical strength, maintaining excellent performance in temperatures ranging from low to 980°C (1800°F).
However, sourcing and processing this alloy presents numerous technical challenges. For purchasing managers and CNC machining workshop supervisors, the main pain points are rapid work hardening during processing and the difficulty in finding reliable suppliers to provide non-standard, custom-sized products.
At Gnee Alloy, we are dedicated to bridging this gap. We provide aerospace-grade materials and expertise to ensure the structural integrity of your projects.
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Complete Guide on Inconel Alloy 625 Plates
Complete Guide on Inconel Alloy 625 Plates
Inconel 625 alloy sheet is a premium nickel-chromium-molybdenum superalloy renowned for its exceptional strength, high-temperature resistance, and excellent corrosion resistance. This alloy is widely used in the aerospace, marine, and chemical industries, and its superior durability stems from solid solution strengthening, eliminating the need for precipitation strengthening heat treatment.
What are the main characteristics of Inconel 625?
Inconel 625 alloy is ideal for seawater applications because it possesses the following properties: resistance to localized corrosion (pitting and crevice corrosion), high corrosion fatigue strength, high tensile strength, and resistance to chloride stress corrosion cracking.
1. Inconel 625 Global Standards Compliance Matrix
USA (Aerospace): AMS 5599, AMS 5600.
USA (Industrial): ASTM B443, ASME SB443.
Europe: W.Nr. 2.4856 (NiCr22Mo9Nb), DIN 17750.
Oil & Gas: Fully compliant with NACE MR0175 / ISO 15156.
inconel 625 plate specification
2. Alloy 625 Plate Chemical Composition
| Grade | Fe | C | Co | Ag | Si | Ti | P | Cr | Mo | Nb+Ta | Ni | Mn | S |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inconel 625 | 5.00% max | 0.10% max | 1.00% max | 0.40% max | 0.50% max | 0.40% max | 0.01% max | 20.00-23.00% | 8.00-10.00% | 3.15-4.15% | 58.00% min | 0.50% max | 0.01% max |
3. UNS N06625 Plate Room Temperature Mechanical Properties
| Condition And Form | Tensile Strength |
Yield Strength (0.2% Offset) |
Reduction Of Area |
Hardness, Brinell | Elongation | ||
|---|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | % | ||
| Solution - Treated | 100 - 120 | 689 - 827 | 40 - 60 | 276 - 414 | - | - | 60 - 40 |
| Annealed | 120 - 150 | 827 - 1034 | 60 - 90 | 414 - 621 | - | 145 - 240 | 55 - 30 |
| As - Rolled | 120 - 160 | 827 - 1103 | 60 - 110 | 414 - 758 | 60 - 40 | 175 - 240 | 60 - 30 |
| Annealed | 120 - 150 | 827 - 1034 | 60 - 95 | 414 - 655 | 60 - 40 | 145 - 220 | 60 - 30 |
| Solution - Treated | 105 - 130 | 724 - 896 | 42 - 60 | 290 - 414 | 90 - 60 | 116 - 194 | 65 - 40 |
| Annealed | 120 - 140 | 827 - 965 | 60 - 75 | 414 - 517 | - | - | 55 - 30 |
4. Inconel 625 Plate Physical Properties
| Melting Range | 1290 - 1350 | °C |
|---|---|---|
| 2350 - 2460 | °F | |
| Density | 0.305 | lb/in.3 |
| 8.44 | g/cm3 |
Click to download the Inconel 625 alloy PDF file now
5. ASTM B443 UNS N06625 Sheet Material Dimension Table
| Nominal Plate Sizes | |
|---|---|
| Inch | mm |
| 0.125 | 3.18 |
| 0.156 | 3.96 |
| 0.600 | 15.9 |
| 0.312 | 7.92 |
| 1.250 | 31.8 |
| 3 | 76.2 |
| 0.750 | 19.1 |
| 2.500 | 63.5 |
| 2 | 50.8 |
| 1 | 25.4 |
| 1.500 | 38.1 |
| 0.500 | 12.7 |
| 0.250 | 6.35 |
| 0.875 | 22.2 |
| 0.134 | 3.40 |
| 1.750 | 44.5 |
| 0.375 | 9.53 |
| 0.187 | 4.75 |
| 1.125 | 28.6 |
Contact us to customize Inconel 625 products to fit your project dimensions
6. What is the forging process for Inconel 625 sheet metal?
Corrosion Rate for Alloy 625 Cold Rolled Plate
| Grade | Corrosion Rate | |
|---|---|---|
| Inconel 625 Plate | 0.2mm/a | 7.9mpy |
Inconel 625 Plate Heat Treatment
| Heat Treatment | Temperature | Cooling Method |
|---|---|---|
| Age Hardening | 700 °C - 750°C | Air |
| Solution Annealing | 1000 °C - 1100°C | Air or water |
| Stress Relieving | 650 °C - 750°C | Air |
| Forging | 950 °C - 1150°C | Air or slow |
| Annealing (Softening) | 650 °C - 750°C | Controlled Air |
7. Custom processing of Inconel 625 sheet metal: precision cutting of blanks
Stop paying for high-value scrap. Our specialized Custom Fabrication center eliminates the pain point of finding non-standard sizes.
Precision Waterjet Cutting: Ideal for plates up to 50mm. Waterjet is a cold-cutting process that preserves the Structural Integrity by ensuring no Heat Affected Zone (HAZ).
Laser Blanking: High-speed, high-accuracy cutting for thin sheets (0.5mm - 3.0mm) based on your CAD blueprints.
Custom Dimensions: We stock master sheets up to 2000mm wide and provide waterjet-cut rings, discs, and complex baffles.
8. Gnee Alloy can supply various types of Inconel 625 steel plates
ASTM B443 UNS N06625 Sheet
AMS 5599 Sheet
Werkstoff Nr 2.4856 Plate
625 Inconel Hot Rolled Plate
Alloy 625 Cold Rolled Plate
Inconel 625 Plate
Why choose a Tier 1 manufacturer like Gnee Alloy?
✅️Direct Factory Price: Eliminate middleman markups and secure the best Wholesale Pricing for your infrastructure projects.
✅️VIM + VAR Melting: Double-vacuum refining ensures zero non-metallic inclusions, maximizing the fatigue life of your parts.
✅️MTC 3.1 Traceability: Every sheet is heat-number stamped and accompanied by an EN 10204 3.1 Mill Test Certificate.
✅️Global Logistics: Fast and secure shipping to Europe, USA, and Southeast Asia within 5-7 business days for stock items.
Gnee Alloy Inconel 625 certificate
Gnee Alloy Product Packaging
All stainless steel products are:
✅️Packed in wooden pallets or crates
✅️Covered with moisture-proof wrapping
✅️Labeled with heat number, standard, and size
✅️Shipped worldwide via sea, air, or express
Gnee Alloy 625 Alloy Packaging
Gnee Alloy Production Equipment and Product Testing
Contact us now to get the latest export price for Inconel 625 in 2026
FAQ
Q1: Is Inconel 625 equivalent to 2.4856 in European projects?
A: Yes. 2.4856 is the Werkstoff number used within the German/DIN system for the exact same metallurgical system as UNS N06625. We provide certificates proving total parity with both standards.
Q2: Can I weld Inconel 625 to standard 316L stainless steel?
A: Absolutely. It has excellent metallurgical compatibility. We recommend using Alloy 625 (ERNiCrMo-3) filler metal to ensure a ductile, corrosion-resistant weld zone.
Q3: How do you protect the surface finish during shipping?
A: All bright annealed sheets are supplied with double-sided PVC/PE film and packed in reinforced, waterproof export wooden crates to ensure a zero-defect surface.
Q4: Do you support small trial orders for prototype R&D?
A: Yes. As a Reliable Supplier, we support Innovation. We offer Flexible MOQs on our in-stock inventory of sheets and plates.