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XtraLowStress Feedwater Heater Tubing


With XtraLowStress® feedwater heater tubing, we've engineered low residual stress tubing for more than 70% of US feedwater heater applications to keep your feedwater heaters running successfully -  that's over 325 million feet! Our West Monroe Mill specializes in these U-Bend tubes so you're guaranteed to receive the best.

XtraLowStress® can provide value in your:

  • Fossil Fueled Power Plants
  • Nuclear-Fueled Power Plants
  • Thermal Power Plants
  • Solar Power
  • Geothermal 
  • Industrial Applications


OD Range: .5-1.625" (12.70-41.275mm)

Wall Range:  .028-.134" (.711-3.40mm)

Max Length: 130' (39 m)

Grades:  304, 304L, 304LN, 316, 316L, 316LN, 317, 317L,

 321, 347, 439

Specifications: ASTM A-688, ASME SA-688

    • XtraLowStress® has less than 3 ksi (34.5 MPa) residual stress in the straight portion of the tube with stretch straightening
    • Less than 8 ksi (55.2 MPa) in the U-bend portion of the tube, making it less susceptible to stress corrosion cracking
    • XtraLowStress® tubes are welded and cold worked or cold drawn, depending upon customer specifications
    • Over 325 million feet of XtraLowStress® are used in U.S. feedwater heater applications

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