Product Specification

Premium UNS N06625 Forged Parts: ASTM B564 Compliant for Aerospace & Chemical Processing

UNS N06625 nickel alloy forgings are high-temperature corrosion-resistant forged products with nickel as the base and alloying elements such as chromium, molybdenum, and niobium added. They comply with ASTM B564 standards and possess excellent high-temperature resistance, corrosion resistance, and fatigue resistance. They are widely used in extreme working conditions in fields such as oil and gas, chemical engineering, and aerospace.

UNS N06625: The Material of Choice for Extreme Conditions

UNS N06625 (commonly known as Inconel 625) represents the pinnacle of nickel-based superalloy engineering. This solid-solution strengthened alloy delivers exceptional performance where other materials fail. Through precise forging under ASTM B564 standards, this alloy transforms into components with unparalleled structural integrity for the world's most demanding industrial applications. From deep-sea oil wells to jet engine combustion chambers, UNS N06625 forgings withstand conditions that would destroy conventional materials in hours.

Chemical Composition: Engineered for Excellence

The exceptional properties of UNS N06625 stem from its carefully balanced chemical composition:

• Nickel (Ni): 58% min - Provides the fundamental matrix with inherent corrosion resistance and toughness

• Chromium (Cr): 20-23% - Imparts outstanding oxidation and high-temperature corrosion resistance

• Molybdenum (Mo): 8-10% - Enhances resistance to reducing acids and localized corrosion (pitting/crevice)

• Niobium (Nb): 3.15-4.15% - Combines with carbon to form stable carbides, strengthening the alloy matrix

• Iron (Fe): 5% max - Controlled impurity that affects magnetic properties and fabrication

• Carbon (C): 0.10% max, Manganese (Mn): 0.50% max - Carefully controlled to optimize mechanical properties

This precise elemental synergy creates a material with balanced properties unmatched by competing alloys.

Core Performance: Alloy Engineered for Extreme Conditions

UNS N06625 is a nickel-chromium-molybdenum-niobium superalloy strengthened primarily by the solid solution effect. Its ingeniously designed composition grants it unparalleled comprehensive properties.

• Exceptional High-Temperature Strength & Oxidation Resistance: This alloy maintains excellent oxidation resistance and structural integrity at temperatures up to 1800°F (approx. 982°C), ensuring long-term stable operation in high-temperature environments.

• Unmatched Corrosion Resistance: Thanks to its high nickel, chromium, and molybdenum content, N06625 exhibits superior resistance to a vast range of corrosive media, including seawater, acidic chlorides, reducing acids (e.g., hydrochloric, sulfuric), and nitrates. It is virtually immune to chloride-induced stress corrosion cracking, making it an ideal choice for marine applications.

• Outstanding Cryogenic Toughness: The alloy retains excellent toughness and mechanical properties at cryogenic temperatures (down to -325°F / -198°C), offering an exceptionally broad service range.

• Excellent Mechanical Properties: Its typical minimum properties include a tensile strength of ≥827 MPa, yield strength of ≥414 MPa, and an elongation of ≥45%, ensuring components possess sufficient strength and ductility under high loads.

Typical Applications

• Aerospace: Engine components, gas turbine parts, fasteners, propeller blades.

• Marine & Shipbuilding: Submarine propulsion systems, marine exhaust stacks, fasteners and cable sheathing exposed to seawater, seawater heat exchangers.

• Energy & Chemical Processing: Flue Gas Desulfurization (FGD) scrubbers, chemical processing equipment (resistant to both oxidizing and reducing acids), pollution control ducting, nuclear power systems, coal gasification and liquefaction units.

• Oil & Gas: Deep-sea production systems, valves, flanges, and piping components in high-pressure, highly corrosive oil and gas environments.

• Industrial Equipment: Critical components in harsh environments of the pulp and paper industry, steam line bellows, etc.

Why Choose Our N06625 Forgings?

1. Superior Performance: The material itself excels in extreme temperatures, pressures, and corrosive environments.

2. Guaranteed Quality: Strict adherence to ASTM, AMS, and other international standards in production and inspection ensures consistent performance across all batches.

3. Professional Processing: Utilization of advanced forging and heat treatment technologies maximizes material performance and structural reliability.

Rich Application Experience: Deep understanding of various industry needs enables us to provide precise technical selection advice.

Performance Comparison Table: UNS N06625 Forgings vs. Competitor Alloys (Inconel 718 / Hastelloy C276)