ASTM B163 Monel 400 Seamless Tube
Monel 400 (UNS N04400) seamless tubes manufactured to ASTM B163 are mainly used for condenser or heat-exchanger service. These tubes are generally furnished in small size with light wall: from 3″ (76.2 mm) and under in outside diameter with minimum wall thickness of 0.148″ (3.76 mm) and under, and with an average wall thickness of 0.165″(4.19 mm) and under.
![ASTM B163 Monel 400 tubes 1"x0.065"x12ft.](http://www.metalspiping.com/wp-content/uploads/2017/03/1in-12ft-astm-b163-monel-400-smls-tube.jpg)
ASTM B163 Monel 400 tubes 1″x0.065″x12ft.
Manufacture, Condition, Finish, Hydro Test Pressure
The Monel 400 tubes of ASTM B163 can be manufactured by either hot-rolling or cold-rolling process. It shall be furnished in either annealed or stress-relieved condition with relative surface finishes. The hydrostatic test pressure for Monel 400 tubes shall be 17.5 ksi [120.6 MPa].
Chemical Composition & Mechanical Properties
It has the same chemical composition as that of ASTM B165 UNS N04400. Mechanical properties are listed below,
Condition | Tensile Strength, min. ksi [MPa] | Yield Strength, min. ksi [MPa] | Elongation, min. % | Hardness, HRB |
---|---|---|---|---|
Annealed | 70 [483] | 28 [193] | 35 | - |
Stress-Relieved | 85 [586] | 55 [379] | 15 | ≤75 |
Bending of Tube
The tubes are usually bent to suit for condenser or heat-exchanger service. The minimum bending radius shall be determined by tube O.D, average tube wall, and condition of the tube.
![U-Bent tubes of ASTM B163 UNS N04400.](http://www.metalspiping.com/wp-content/uploads/2017/03/u-bend-tube-of-astm-b163-monel-400.jpg)
U-Bent tubes of ASTM B163 UNS N04400.
![Helical bent-coils made of ASTM B163 seamless tubes.](http://www.metalspiping.com/wp-content/uploads/2017/03/helical-coils-made-of-astm-b163-monel-400-tubes.jpg)
Helical bent-coils made of ASTM B163 seamless tubes.