A specialty steel product designed to help minimize mechanical failures
It's no secret that fatigue is one of the most common causes of mechanical failures for metals in service. Our 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.
Our Fatigue-Proof® products are produced through various combinations of mechanical working and thermal treatment. They provide a variety of advantages, including:
Make an Inquiry
Have questions about your specific products? Click below to make an inquiry.
Excellent machining characteristics
High tensile strength
Exceptional resistance to fatigue and wear
Minimized distortion
Eliminates need for heat treat or secondary operations
Fatigue-Proof® Steel Bars are comparator or roto tested, and although it induction hardens satisfactorily, it should also be watched for quench cracks.
Fatigue-Proof® products expertly fend off fatigue and make an excellent, long-lasting machining material that won't let you down and works hard to lower your end costs.
You can rely on Niagara LaSalle for all of your steel bar needs. To learn more about Fatigue-Proof® or any of our specialty products, please contact us.
*AISI
1144M heats to be used for FATIGUE-PROOF® are usually nitrogen treated, and
contain nitrogen in quantities normally associated with steel produced by the
electdc furnace process.
Mechanical
Properties
Tensile Strength
*140,000
psi
Yield
Strength (.2% offset)
125,000 psi
Machining Characteristics
80% of 1212
Elongation
5% Min.
Reduction of Area
15% Min.
Rockwell C Hardness
*30 Min.
Brinell
Hardness
* 280 Min.
* In the
event of disagreement between hardness and tensile strength, the tensile
strength shall govern.
MICRO-STRUCTURE
Pearlite and ferrite
SIZE RANGE
Rounds 1/4" through
3-1/2" Hexagons 1/4" through 1-1/2"
TOLERANCES
Rounds
5/16" to less than 7/16"
0.004"
7/16" to 1-1/2" incl.
0.005"
Over 1-1/2" to 3-1/2" incl.
0.006"
Hexagons
1/4" to less 3/8"
0.004"
3/8" to less than 7/16"
0.005"
7/16" to 1-1/2" incl.
0.006"
LENGTH
11'/13'
FINISH
Standard "as drawn" finish is
smooth, accurate and dark in color.
Ground and Polished finish provides
close tolerances, high accuracies and bright surface. Rounds only.
EXAMPLE OF USE
Parts you are now heat
treating from Rc 30 to Rc 36.