ASTM ASME SB160 Alloy 200 UNS N02200 Bar

ASTM ASME SB160 Alloy 200, also known as UNS N02200, is a commercially pure (99.6%) nickel alloy known for its excellent corrosion resistance and high thermal and electrical conductivity. When supplied in the form of bars, Alloy 200 can be utilized in various applications where resistance to corrosion and conductivity are essential. Here are some details about Alloy 200 bars:

Grade Name:

DIN: 2.4066

JIS: NW 2200

EN: Ni99.2

ASME: SB 160, UNS N02200

Elemental Composition:

Nickel (Ni): 99.0% min

Iron (Fe): 0.40% max

Manganese (Mn): 0.35% max

Carbon (C): 0.15% max

Silicon (Si): 0.35% max

Copper (Cu): 0.25% max

Sulfur (S): 0.010% max

Mechanical Properties (Typical values for annealed condition):

Tensile Strength: 55 ksi (380 MPa) min

Yield Strength (0.2% offset): 15 ksi (105 MPa) min

Elongation: 40% min

Hardness: 75 HRB max (Rockwell B scale)

Application Range:

Chemical processing: Equipment for handling corrosive acids and alkaline solutions.

Electrical industry: Components for electrical resistance heating, including heating coils and electrical conductors.

Marine industry: Components for seawater applications, such as heat exchangers and condensers.

Aerospace industry: Components for aircraft engines and airframes where resistance to corrosion and conductivity are required.

Food processing: Equipment for handling food products, such as cookware and food processing machinery.

Manufacturing Process:

Alloy 200 bars are typically manufactured through processes such as hot rolling, cold drawing, or hot forging. Annealing may be applied to relieve internal stresses and improve machinability.

Quality Control:

Material testing for chemical composition and mechanical properties.

Non-destructive testing (e.g., ultrasonic testing, radiographic testing).

Dimensional inspection.

Surface inspection.

Pressure testing (if applicable).

Other Common Types:

In addition to bars, Alloy 200 is available in various other forms such as sheets, plates, pipes, tubes, fittings, and welding wire.

Common Q&A:

Q: Can Alloy 200 withstand high temperatures?

A: Alloy 200 has limited high-temperature strength compared to other nickel alloys. It is typically used in applications where temperatures do not exceed 600°C (1112°F).

Q: Is Alloy 200 weldable?

A: Yes, Alloy 200 is weldable using conventional welding techniques. It's recommended to use matching composition filler metals to ensure the integrity of the weld joint.

Q: What are the corrosion resistance properties of Alloy 200?

A: Alloy 200 offers excellent resistance to various corrosive environments, including acids, alkaline solutions, and seawater. However, it is susceptible to attack by oxidizing acids and halogens.

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