ASTM B407 UNS N08810 Nickel Alloy Steel Heat Exchanger Tube In Air Cooler

ASTM B407 UNS N08810 Nickel Alloy Steel Heat Exchanger Tube , Air Cooler

ASTM B407 UNS N08810 refers to a high-performance, nickel-based alloy that is specifically designed for use in heat exchanger tubes and other industrial applications where resistance to high-temperature corrosion, oxidation, and stress is required. The alloy is part of the broader family of nickel alloys, which are known for their excellent resistance to a wide variety of aggressive environments.

ASTM B407: This specification covers the requirements for nickel-alloy seamless and welded tubes, particularly for heat exchangers, condensers, and other heat transfer applications.

UNS N08810: The Unified Numbering System (UNS) designates this particular alloy as a high-chromium nickel alloy, well-suited to heat exchanger and similar applications.

Composition:

• Nickel (Ni): Approximately 35-46%, which is the primary element in the alloy.

• Chromium (Cr): Typically around 19-23%, contributing to high-temperature oxidation resistance.

• Iron (Fe): Around 20% (depending on specific grades), often found in nickel alloys to balance mechanical properties.

• Molybdenum (Mo): 2.5-3%, which enhances resistance to pitting, crevice corrosion, and improves mechanical properties.

• Other elements: Small quantities of silicon, manganese, and other trace elements are included for improved workability and resistance to various corrosive environments.

Mechanical Properties:

• High Strength: The alloy has excellent mechanical strength even at high temperatures, making it suitable for applications such as heat exchangers where the material is subjected to both thermal and mechanical stresses.

• Ductility and Toughness: It maintains good ductility and toughness, making it resistant to cracking or fracture under stress.

• Stress Corrosion Cracking Resistance: It is highly resistant to stress corrosion cracking, especially in environments like sulfuric acid and chloride.

Temperature Range:

• UNS N08810 can perform at elevated temperatures, typically up to 1100°F (593°C), with some variations depending on the specific environmental conditions.

• It is also capable of maintaining its mechanical properties in both high-temperature oxidizing environments and under moderate temperatures in corrosive atmospheres.

ASTM B407 Heat Exchanger Tube

UNS N08810 Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

ASTM B407 UNS N08810 Nickel Alloy Steel Heat Exchanger Tube In Air Cooler Images