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Alloy Steel Flat Bar - 4140

4140 Alloy Steel Flat is an cold drawn annealed steel of relatively high hardenability with its chromium content provides good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength. 4140 Alloy Steel Flat responds well to heat-treatment and is relatively easy to machine in the annealed condition. 4140 Alloy Steel Flat has good strength and wear resistance, excellent toughness, coupled with good ductility, and the ability to resist stress at elevated temperatures. 
  • Specifications: ASTM A331, AISI 4140
  • AKA: CDA Alloy Flat, 4140 Rectangle Bar
  • Applications: brake dies, fixtures, jigs, blades, tool holders, etc.  
  • Workability: Moderate to Weld, Cut and Machine. 
  • Mechanical Properties: Brinell = 223, Tensile = 102,000 +/-,  Yield = 90,000 +/- 
  • How is it Measured? Thickness (A) X Width (B) X  Length
  • Available Stock Sizes: 2ft, 4ft, 6ft, 8ft, 12ft or Cut to Size
Stock lengths may vary +/- 1/4" 
Please call if you need specific lengths.

 4140 Alloy Flat Bar
NEW Cut-to-Size Service available on these items! Call 1-859-745-2650 for details.
Stock
Number		 Product Type Item Size & Description
(Inches)		 Click! Arrow to
Select Size		 Qty Select / Price
F3141-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/4 x 1
F314112-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/4 X 1-1/2
F3142-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/4 x 2
F3143-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/4 x 3
F3381-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/8 x 1
F338112-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/8 x 1-1/2
F3382-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/8 x 2
F3383-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/8 x 3
F3121-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/2 x 1
F312112-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/2 x 1-1/2
F3122-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/2 x 2
F3123-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/2 x 3
F3124-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/2 x 4
F3125-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/2 x 5
F3126-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1/2 x 6
F3341-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/4 x 1
F334112-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/4 x 1-1/2
F3342-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/4 x 2
F3343-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/4 x 3
F3344-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/4 x 4
F3346-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 3/4 x 6
F31112-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1 x 1-1/2
F312-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1 x 2
F313-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1 x 3
F314-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1 x 4
F316-4140 Alloy 4140 Steel Flat - Cold Drawn Annealed 1 x 6