ASTM B163 N04400 Alloy Steel Tube for Condenser and Heat Exchanger
Application
ASTM B163 N04400 alloy steel tube is a high-performance, multi-purpose
corrosion-resistant alloy pipe. The wall thickness is usually
between 1.24-59.54mm, and the outer diameter ranges from
21.3-1219.2mm. The main chemical components are nickel (≥ 63%),
copper (28.0%~34.0%), iron (≤ 2.5%), carbon (≤ 0.30%), manganese (≤
2.0%), silicon (≤ 0.50%), and sulfur (≤ 0.024%). These unique
chemical components endow it with excellent corrosion resistance.
ASTM B163 Alloy Steel Tube Chemical Composition
GRA. | ASTM B163 Alloy Steel Tube CHEMICAL COMPOSITION % MAXIMUM |
|---|
| NI | CU | IR | MN | C | SI | S |
|---|
| N02200 | 99.0 | 0.25 | 0.40 | 0.35 | 0.15 | 0.35 | 0.01 |
| N04400 | 63.0 | 28.0-34.0 | 2.5 | 2.0 | 0.3 | 0.5 | 0.024 |
In terms of mechanical properties, ASTM B163 N04400 alloy steel tubes have good plasticity and toughness, can maintain
low wear rates under various working conditions, and have good
formability, which can be processed by cutting, welding, heat
treatment and other processing techniques. N04400 alloy steel tubes
have excellent corrosion resistance in media such as hydrofluoric
acid, fluorine gas, hydrochloric acid, sulfuric acid, and their
derivatives, and are more corrosion-resistant than copper based
alloys in seawater. In addition, it is resistant to corrosion from
neutral solutions, water, atmosphere, organic compounds, etc., and
does not produce stress corrosion cracking. With its high
temperature strength and good oxidation resistance, N04400 alloy
steel tube can work stably in high temperature and harsh
environments. The maximum temperature for continuous operation in
the air is generally around 600 ℃.
During use, it should be noted that N04400 alloy steel tubes cannot
withstand corrosion from substances such as nitric oxide, nitrous
acid, sulfur dioxide, and hypochlorite. Therefore, they should not
be used in environments that are exposed to these elements.
ASTM B163 N04400 Alloy Steel Heat Treatment
Material and Condition | Tensile Strength, min, ksi (MPa) | Yield Strength (0.2 % Offset), min, ksi (MPa) | Elongation in 2 in. or 50 mm (or 4 D) min, %
|
|---|
| Annealed | 70 (483) | | 35 |
Stress-relieved | 85 (586) | | 15 |
ASTM B163 N04400 Alloy Steel Tube Application:
- Chemical equipment: manufacturing pumps, valves, containers, etc. These equipment need
to withstand the erosion of various corrosive media in the chemical
production process, and ASTM B163 N04400 alloy steel tubes can meet
these needs due to their excellent corrosion resistance.
- Marine Engineering: In the marine environment, ASTM B163 N04400 alloy steel tubes are
widely used as structural materials for ships and offshore
platforms due to their extremely high corrosion resistance. For
example, it can be used as a material for seawater heat exchangers
and evaporators, as well as equipment materials for seawater usage
environments.
- Oil and gas industry: This alloy steel seamless tube is also commonly used in drilling
equipment and pipelines because it can maintain stability and
corrosion resistance in high-temperature and high-pressure oil
extraction environments.
- Nuclear power generation: In the nuclear industry, ASTM B163 N04400 alloy steel tubes are
used to manufacture uranium extraction and isotope separation
equipment, as well as key components such as pressure vessels in
nuclear reactors.
- Other fields: This alloy steel seamless tube is also widely used in seamless
water tubes and steam tubes in power plants; Equipment in sulfuric
acid and hydrochloric acid environments; Crude oil stills,
processing vessels, and pipelines; Boiler feedwater heaters and
other heat exchangers, etc.
