Specifications of ASTM B443 N06625 Nickel Alloy Plate

ASTM B443 N06625, known as Inconel 625, is a high-performance nickel-based alloy plate available in various specifications to meet diverse industrial needs. This alloy, composed of nickel (≥58%), chromium (20–23%), molybdenum (8–10%), and niobium (3.15–4.15%), is supplied as plates, sheets, and strips under the ASTM B443 standard, with specific dimensions, forms, and finishes tailored for applications in aerospace, marine, and chemical processing.

Forms and Thickness: The standard covers plates (>3 mm thick), sheets (0.5–3 mm), and strips or foils (<0.5 mm). Plates are typically available in thicknesses ranging from 0.3 mm to 75 mm, with common offerings from suppliers like Siddhagiri Metals and Roopam Steel including 0.5 mm to 50 mm for sheets and 3 mm to 75 mm for plates.

Dimensions: Standard sizes include 1000 x 2000 mm, 1220 x 2440 mm (4’ x 8’), and 1500 x 3000 mm, with custom dimensions available upon request. Widths typically range from 1000 mm to 2000 mm, and lengths can extend up to 6000 mm or more, depending on supplier capabilities.

Surface Finishes: Options include hot-rolled, cold-rolled, mirror, brushed, sandblasted, or pickled finishes, catering to aesthetic and functional requirements.

Heat Treatment Conditions: The alloy is supplied in Grade 1 (annealed) for service up to 593°C or Grade 2 (solution-annealed) for higher temperatures, ensuring versatility.

Standards Compliance: Plates meet ASTM B443, AMS 5599, and ISO 6208, with Material Test Certificates (EN 10204/3.1B) provided. Custom cutting (laser or waterjet) and fabrication services are also offered, making Inconel 625 suitable for critical applications.