Inconel 625 Forging Services
Inconel 625 (UNS N06625) is a solid-solution strengthened nickel-chromium-molybdenum alloy renowned for its exceptional resistance to a wide range of corrosive environments, combined with good mechanical strength from cryogenic temperatures up to 1,800°F (982°C). CastAlloy's Inconel 625 forging services produce components with the refined grain structure and enhanced mechanical properties needed for demanding marine, chemical processing, and oil and gas applications.
Why Inconel 625?
Inconel 625 offers outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking in chloride-bearing environments—making it the preferred material for seawater-exposed components, flue gas desulfurization systems, and sour gas processing. The alloy's high molybdenum content (8-10%) provides excellent resistance to chloride ion attack, while its chromium content (20-23%) ensures oxidation resistance at elevated temperatures. Unlike precipitation-hardened alloys, Inconel 625 maintains its corrosion resistance regardless of heat treatment condition.
Applications
Our forged Inconel 625 components serve applications in subsea oil and gas equipment (connectors, hubs, valve bodies), chemical processing (reactor vessels, heat exchangers, piping), marine engineering (propeller shafts, seawater systems), aerospace exhaust systems, and pollution control equipment. The combination of corrosion resistance and mechanical strength makes Inconel 625 forgings essential wherever components face aggressive chemical environments combined with mechanical loading.
Technical Specifications
| Specification | Details |
|---|---|
| UNS Designation | N06625 |
| Specifications | AMS 5666, ASTM B564 |
| Tensile Strength | 120-150 ksi |
| Max Service Temp | ~1,800°F (982°C) |
| Key Resistance | Pitting, crevice corrosion, SCC |
| Typical Applications | Subsea, chemical, marine, exhaust |
Frequently Asked Questions
Inconel 625 is solid-solution strengthened and offers superior corrosion resistance, especially in chloride environments. Inconel 718 is precipitation-hardened, providing higher mechanical strength (180+ ksi vs 120-150 ksi) but with somewhat less corrosion resistance. Choose 625 when corrosion is the primary concern; choose 718 when strength is critical.