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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.
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].
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 |
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