3/4" X 3" 4140 FLAT ANNEALED COLD FINISHED ASTM A108

Specifications:

ASTM A108

Applications:

Drill collars, fasteners, mechanical tools, axles, gears, oil tools, bolts, shafts machine tool components and valves are just some of the applications of this very versatile alloy.

How To Measure:

A (Thickness) X B (Width)

Chemistry:
  • Carbon .38/.43
  • Manganese .75/1.00
  • Phosphorus .035 max
  • Sulfur .040 max
  • Silicon .15/.35
  • Chrome .80/1.10
  • Molybdenum .15/.25
Mechanical Properties:
  • Annealed Cold Finish BHN 241 max

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