We are Modern Industries, Inc. based in Erie , USA. We are member of Tradekey.com since May, 2006. Our business is related to Automobiles industry and we specifically deal in Steel, Brass, Aluminum. Please find our product details below:AISI 1144 Fatigue-Proof SteelAISI 1144 FATIGUE-PROOF Steel, 1-1/2" Diameter Bar Stock, 10,000 Total Pounds.FATIGUE-PROOF® is made by various combinations of mechanical working and thermal treatment which can include Niagara LaSalle's ® (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, operates to lower end costs. FATIGUE-PROOF® induction hardens satisfactorily, but should be watched for quench cracks. FATIGUE-PROOF® is also electro-magnetically tested using eddy currents.ChemistryCarbon 0.40/0.48Maganese 1.35/1.65Phosphorus 0.040Sulphur 0.24/0.33Silicon 0.15/0.30*Open hearth or basic oxygen produced AISI 1144 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 PropertiesTensile Strength *140,000 psiYield Strength (.2% offset) 125,000 psiMachining Characteristics 80% of 1212Elongation 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 ferriteSIZE RANGE Rounds 1/4" through 3-1/2"Hexagons 1/4" through 1-1/2"TOLERANCES Rounds5/16" 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"Hexagons1/4" 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.Thank you for taking the time to go through our business profile. If there are any question, inquiry or comments, please feel free to contact us.
