High-Performance ASTM B564 UNS N06625 Nickel Alloy Forgings for Extreme

Product Specification

High-Performance ASTM B564 UNS N06625 Nickel Alloy Forgings for Extreme Environments

ASTM B564 UNS N06625 forgings represent the intersection of advanced metallurgy, precision manufacturing, and rigorous quality control. Their unique combination of strength, corrosion resistance, and fabricability makes them the material of choice for applications where failure is not an option. Whether facing the corrosive depths of the ocean, the intense heat of combustion, or the aggressive chemistry of industrial processes, these forgings deliver reliable performance that extends equipment life and reduces maintenance costs.

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.

Advantages Over Alternative Materials

Compared to stainless steels (316, 317, duplex), UNS N06625 offers:

• 3-5 times higher strength at elevated temperatures

• Superior corrosion resistance in reducing acid environments

• Better resistance to stress corrosion cracking

Compared to other nickel alloys (600, 800, 825), N06625 provides:

• Higher strength without precipitation hardening heat treatment

• Better weldability with reduced susceptibility to post-weld cracking

• Superior fatigue resistance in cyclic loading applications

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.

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