Incoloy 925: age-hardenable nickel-iron-chromium alloy offering high strength to 140 ksi, exceptional resistance to sulfide stress cracking and chloride SCC in sour gas environments, plus comprehensive corrosion protection for down-hole oil/gas equipment, marine shafts, and chemical processing. UNS N09925. NACE MR0175/ISO 15156 compliant.
Incoloy 925 (Alloy 925) is a precipitation-hardenable nickel-iron-chromium alloy with excellent corrosion resistance and high strength. It combines the strength of age-hardening alloys with the corrosion resistance of nickel-based materials.
This alloy is widely used in oil and gas, marine, and chemical processing industries where both mechanical strength and corrosion resistance are critical
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Compare with Incoloy 825
Key Features
- High strength through precipitation hardening
- Excellent resistance to corrosion and cracking
- Strong performance in sour gas environments (H₂S, CO₂)
- Good resistance to stress corrosion cracking
- Reliable performance in high-pressure conditions
Applications
Incoloy 925 is widely used in demanding environments:
- Oil and gas drilling equipment
- Downhole and wellhead components
- Marine engineering systems
- Valves and fasteners
- High-strength structural components
Incoloy 925 vs Other Alloys
925 vs 825
- 925: Higher strength (precipitation hardened)
- 825: Better for general corrosion resistance
925 vs Inconel 718
- 925: Better corrosion resistance in sour environments
- 718: Higher strength at elevated temperatures
- Learn more about Inconel 925 VS Inconel 718
Why Choose Our Incoloy 925
- Direct manufacturer with global supply capability
- Strict quality control and international standards
- Competitive pricing and fast delivery
- Custom sizes and machining services available
- Professional technical support
FAQ
What is Incoloy 925 used for?
It is mainly used in oil and gas equipment, especially in sour gas environments requiring high strength and corrosion resistance.
Is Incoloy 925 corrosion resistant?
Yes, it offers excellent resistance to corrosion, including stress corrosion cracking and sulfide stress cracking.
What is the difference between Incoloy 925 and 825?
Incoloy 925 has higher strength due to precipitation hardening, while 825 is more focused on corrosion resistance.
Is Incoloy 925 suitable for high-pressure environments?
Yes, it performs well in high-pressure and harsh environments, making it ideal for downhole applications.
Chemical composition
% | Ni | Fe | Cr | C | Mn | Si | P | S | Mo | Cu | Ti | Al | Nb |
min | 42.0 | 22.0 | 19.5 | 2.5 | 1.5 | 1.9 | 0.10 | ||||||
max | 46.0 | 22.5 | 0.030 | 1.00 | 0.50 | 0.030 | 0.030 | 3.5 | 3.0 | 2.4 | 0.50 | 0.50 |
Note: Incoloy is a registered trademark of the Special Metals Corporation group of companies.
Alloy | ASTM | DIN | BS | AFNOR | GB | |
|---|---|---|---|---|---|---|
New grades | Old grades | |||||
| Incoloy 800 | UNS N08800 | 1.4876 / X10NiCrAlTi3220 | NA15 | Z8NC32.21 | NS1101 | NS111 |
| Incoloy 800H | UNS N08810 | 1.4958 / X5 NiCrAlTi 31-20 | NA 15 (H) | NS1102 | NS112 | |
| Incoloy 800HT | UNS N08811 | 1.4959 / X 8 NiCrAlTi 32-21 | ||||
| Incoloy 825 | UNS N08825 | 2.4858 / NiCr21Mo | NA16 | NC21FeDu | NS1402 | NS142 |
| Incoloy 925 | UNS N09925 | 1.4529 / X1NiCrMoCu | ||||
| Incoloy 926 | UNS N08926 | 1.4529 / X1NiCrMoCu | X1NiCrMoCu | X1NiCrMoCu | ||
| Incoloy 901 | UNS N09901 | 2.4662 | ||||
| Incoloy 330 | UNS N08830 | |||||
