Inconel 725 Fasteners (UNS N07725)
Ananka Fasteners is a premier manufacturer and supplier of ultra-high-strength Inconel 725 Fasteners. Manufactured according to official Special Metals Alloy Standards, Alloy 725 combines the exceptional corrosion resistance of Alloy 625 with a precipitation-hardening heat treatment to deliver nearly twice the yield strength, making it the ultimate solution for highly corrosive sour gas (H2S) wells, marine engineering, and severe chemical processing environments.
■ Inconel Alloy Selection Grid
To assist procurement managers and engineers, use our technical grid below to compare the performance limits of our primary Inconel grades. Click the specific grade for its dedicated specification page.
| Grade / Anchor Link | Yield Strength (Min) | Pitting Resistance (PREN) | Max Temperature Limits |
|---|---|---|---|
| Inconel 600 Fasteners | 35 ksi (240 MPa) | N/A (Oxidation focused) | 2000°F (1093°C) |
| Inconel 601 Fasteners | 30 ksi (205 MPa) | N/A (Oxidation focused) | 2200°F (1204°C) |
| Inconel 625 Fasteners | 60 ksi (414 MPa) | ~45 (Excellent) | 1800°F (982°C) |
| Inconel 718 Fasteners | 150 ksi (1034 MPa) | ~30 (Very Good) | 1300°F (704°C) |
| Inconel 725 Fasteners | 120 ksi (827 MPa) | ~45 (Excellent) | 1000°F (538°C) |
■ Complete Range of Inconel 725 Fasteners
We manufacture a comprehensive range of Alloy 725 fasteners engineered for extreme stress and harsh marine or sour gas exposure.
| Bolts & Screws | Nuts & Washers | Studs & Rods |
|---|---|---|
| Hex Bolts / Heavy Hex Bolts | Hex Nuts / Heavy Hex Nuts | Fully Threaded Studs |
| Socket Head Cap Screws | Flange Nuts / Lock Nuts | Double Ended Studs |
| Flange Bolts / 12-Point Bolts | Flat Washers / Spring Washers | Custom CNC Machined Studs |
■ Mechanical Properties & Yield Strength
Unlike Alloy 625, Inconel 725 Fasteners are age-hardened (precipitation hardened) to significantly boost their strength while maintaining high ductility and toughness. Below are the mechanical requirements:
| Tensile Strength (Min) | Yield Strength 0.2% Offset (Min) | Elongation (%) | Hardness (HRC) |
|---|---|---|---|
| 160 ksi (1103 MPa) | 120 ksi (827 MPa) | 20% Min | 35 - 43 HRC |
■ Sour Gas, Marine & EPC Applications
The outstanding pitting, crevice, and stress-corrosion cracking resistance of Inconel 725 components makes them the alloy of choice for highly corrosive, high-pressure environments.
- Oil & Gas (Sour Gas): Fasteners for down-hole equipment, hangers, landing nipples, and side pocket mandrels exposed to hydrogen sulfide (H2S).
- Marine & Naval: High-strength fasteners for submarines, naval vessels, and offshore rig components resisting seawater corrosion.
- Chemical Processing: Pressure vessels and piping systems handling reducing and oxidizing acids.
- Aerospace: Structural components requiring a combination of extreme strength and environmental resistance.
■ Quality Assurance & MTC Downloads
As a primary manufacturer based in Mumbai, our quality control goes beyond standard chemical analysis. We conduct rigorous first-hand testing on all age-hardened Inconel 725 Fasteners to ensure they meet the stringent safety requirements of EPC contractors and marine engineers.
- Ultrasonic Testing (UT): Internal flaw detection performed on raw billets prior to machining.
- Destructive Testing: In-house tensile, yield, and hardness testing to verify the efficacy of the precipitation-hardening process.
- PMI (Positive Material Identification): 100% optical emission spectroscopy scanning prior to dispatch.
📄 Download Sample EN 10204:3.1 MTC (PDF)