ASTM B165 UNS N04400 Nickel Alloy Steel Seamless Tube For Heat Exchanger
ASTM B165 UNS N04400 Nickel Alloy Steel Tube
Overview
ASTM B165 is a standard specification for nickel-copper alloy (UNS N04400) seamless pipes and tubes. UNS N04400, also known as Monel 400, is a solid-solution alloy that is primarily composed of nickel and copper. It offers excellent corrosion resistance in various environments, including seawater and acidic solutions.
The ASTM B165 standard outlines the requirements for the chemical composition, mechanical properties, dimensions, and tolerances of seamless pipes and tubes made from UNS N04400. It ensures that the material meets the necessary quality and performance standards for its intended applications.
Chemical Composition of ASTM B165 UNS N04400
| Grade | Ni | Cu | Fe | Mn | C | Si | S | |
| N04400 | Min | 28.0 | ||||||
| Max | 63.0 | 34.0 | 2.5 | 2.0 | 0.3 | 0.5 | 0.024 |
Mechanical Properies of ASTM B165 UNS N04400
| Grade | Tensile Str Ksi(Mpa) | Yield Str Ksi(Mpa) | Elongation(%) |
| 5 in. outside diameter and under | ≥70000(480) | ≥28000(195) | ≥35 |
| Over 5 in. outside diameter | ≥70000(480) | ≥25000(170) | ≥35 |
| All sizes | ≥85000(585) | ≥55000(380) | ≥15 |
Length Tolerance of ASTM B165
| Length,ft(cm) | Tube Size,in(mm) | Permissible Variations, in(mm) | |
| Over | Under | ||
| Under 1(30) | up to 1.250(31.8),incl | 1/32(0.8) | 0(0) |
| 1 to 4(30 to 122),incl | up to 1.250(31.8),incl | 1/16(1.6) | 0(0) |
| Over 4 to 10(122 to 300),incl | up to 1.250(31.8),incl | 3/32(2.4) | 0(0) |
| Over 10(300) | up to 1.250(31.8),incl | 3/16(4.8) | 0(0) |
Uses&Application
1>.Chemical Processing: Monel 400 is frequently used in chemical processing industries for equipment such as pumps, valves, heat exchangers, and piping systems. Its resistance to corrosive chemicals and acids, including sulfuric acid, hydrofluoric acid, and seawater, makes it suitable for these applications.
2>.Marine Engineering: As Monel 400 exhibits superior resistance to saltwater and steam at high temperatures, it is often employed in marine applications. This includes shipbuilding, offshore platforms, seawater valves, pump shafts, and fittings.
3>.Oil and Gas Industry: Monel 400 is utilized in oil and gas exploration and production due to its resistance to sour gas environments, brine solutions, and non-oxidizing chloride solutions. It finds applications in downhole equipment, valves, pumps, and tubing.
4>.Aerospace Industry: ASTM B165 N04400 is used in aircraft and aerospace applications where its corrosion resistance and high strength-to-weight ratio are advantageous. It can be found in components like fuel tanks, exhaust systems, and aircraft frames.
5>.Power Generation: Monel 400 is suitable for power generation applications, including steam generators, condensers, and heat exchangers, due to its resistance to corrosion and high-temperature environments.
6>.Food Processing: The corrosion resistance of Monel 400 makes it suitable for food processing equipment, particularly in environments containing acids, alkaline solutions, and brines.
7>.Heat Exchangers: Monel 400 is employed in heat exchangers in various industries, including chemical processing, petroleum refining, and power generation, due to its resistance to corrosion and scaling.
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