
The Difference Between Inconel 625 and 718 Fasteners
Inconel 625 and 718 are both high-performance nickel-chromium alloys used in a wide range of demanding applications. While both offer excellent corrosion resistance and strength, their specific properties and ideal applications differ. Inconel 625 offers exceptional corrosion resistance, particularly in marine and chemical processing environments, while Inconel 718 is known for its exceptional strength, especially at high temperatures, making it an ideal choice for aerospace and high-stress applications.
What are the disadvantages of Inconel 625?
Disadvantages: Cost: Due to its complex composition and high production costs, Inconel 625 is significantly more expensive than many other materials. Difficulty in Machining: The toughness of Inconel 625 makes it more difficult to machine, requiring specialized tools and processes.

Inconel 625 Fasteners & 718 Fasteners Specification
| Standard | ASTM B166, ASME SB166 |
| Dimensions | ANSI B18.2.2, DIN 934,ISO 4032, BS1768, BS 1769 |
| Length | 3 mm to 200 mm |
| Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Type | Bolts, Nuts, Sockets, Screws, Screw, Studs, Socket Screw, Hex Set Screw, Cap Screw, Machine Screw, Pan Head Screw, Allen Cap screw, Socket Head Cap Screw, Wing Screw, Spring Washers, Washers, Studs, Marine Anchors, Anchors, Hexagon Nut, Nut, Hex Coupling Nut, Hex Nut, Square Nut, Hex Domed Cap Nuts, Hex Head Bolts, Stud Bolts, Socket Hexagon Head Screw,U- Bolts, Anchor Bolt, Mushroom Head Square Neck Bolts, J Bolts, Wing Screw, T-Head Bolts, Foundation Bolts, Eye Bolt,Structural Bolts. |
Inconel 625 Fasteners Chemical Composition
| Ni | Fe | C | Mn | Si | Cr2 | Mo | Co | Al | Ti | Nb + Ta | P | S |
| 58.0 min | 5.0 max | 0.10 max | 0.50 max | 0.50 max | 20.0-23.0 | 8.0-10.0 | 1.0 max | 0.40 max | 0.40 max | 3.15–4.15 | 0.015 max | 0.015 max |
Inconel 718 Fasteners Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Inconel 718 | 0.08 max | 0.35 max | 0.35 max | 0.015 max | 0.30 max | - | 50.00 - 55.00 | 17.00 - 21.00 |

Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.





