Fatigue-Proof
Chemical Composition
Carbon - 0.40/0.48
Manganese - 1.35/1.65
Phosphorus - 0.040
Sulphur - 0.24/0.33
Silicon - 0.35 Max
Properties
Tensile Strength *140,000 psi <br>
Yield Strength (.2% offset) 125,000 psi <br>
Machining Characteristics 80% of 1212 <br>
Elongation 5% Min. <br>
Reduction of Area 15% Min. <br>
Rockwell C Hardness *30 Min. <br>
Brinell Hardness * 280 Min.
Typical Uses
  • Excellent machining characteristics
  • High tensile strength
  • Exceptional resistance to fatigue and wear
  • Minimized distortion
  • Eliminates need for heat treat or secondary operations

Fatigue-Proof®

FATIGUE-PROOF® is made by various combinations of mechanical working and thermal treatment which can include Niagara-LaSalle's "e.t.d.®" (elevated temperature drawing) process. This is a high strength steel bar that eliminates heat treating and secondary operations such as cleaning, straightening, secondary machining and inspections. All this, in combination with free machining and high strength, result in lower end costs.

Fatigue is one of the most common causes of mechanical failures for metals in service. Fatigue-Proof® products offer an alternative that can minimize mechanical failures. Although they have the high-strength properties typically associated only with heat-treated steels, these bars don't require heat treating or other secondary operations such as cleaning, straightening or inspections.

FATIGUE-PROOF® is a trademark of the LaSalle Steel Corporation. www.niagaralasalle.com