Key Properties of ASTM B443 N06625 Nickel Alloy Plate

ASTM B443 N06625, commonly known as Inconel 625, is a nickel-based alloy plate celebrated for its exceptional properties, making it a preferred material in demanding industries. Composed primarily of nickel (≥58%), chromium (20–23%), molybdenum (8–10%), and niobium (3.15–4.15%), this alloy offers a unique combination of corrosion resistance, high-temperature strength, and fabricability.

Corrosion Resistance: Inconel 625 exhibits outstanding resistance to pitting, crevice corrosion, and chloride-ion stress corrosion cracking. It performs exceptionally well in harsh environments, including seawater, acidic media (e.g., sulfuric, hydrochloric, and phosphoric acids), and oxidizing conditions, making it ideal for marine and chemical processing applications.

High-Temperature Performance: The alloy maintains strength and oxidation resistance up to 1093°C (2000°F), suitable for short-term high-temperature applications. For long-term use, it is recommended below 593°C to prevent embrittlement, ensuring reliability in aerospace components like turbine shrouds and exhaust systems.

Mechanical Properties: With a minimum tensile strength of 930 MPa and yield strength of 430 MPa, Inconel 625 offers excellent toughness across a wide temperature range, from cryogenic to elevated conditions. The addition of niobium enhances strength through solid-solution strengthening.

Fabricability: Inconel 625 is easily weldable and formable, supporting various welding methods (e.g., GTAW, GMAW) without requiring precipitation hardening. This facilitates its use in complex structures like chemical reactors and pipelines.

Available in annealed (Grade 1) or solution-annealed (Grade 2) conditions, ASTM B443 N06625 plates meet stringent standards, ensuring durability and versatility in critical applications.