Alloy > 4140

This medium carbon alloy steel grade is widely used for many applications requiring high tensile strength and ductility combined with hardness in the R/C 40 range. The cold finished 4140 alloy steel bars are calcium treated; this addition greatly increases cutting speeds and tool life without sacrificing mechanical properties.

Grade / Shape

Min (in)

Max (in)

Width Max (in)

Lengths (ft)

4140 ANN CD RD 0.3125 4.5   10 to 12 
4140 ANN DCF Flats & SQ 0.25 6 12 10 to 12 
4140 ANN DCF Plate 3 8 36 10 to 12 
4140 ANN FG & RT RD 12.125 18.25   18 to 24 
4140 ANN Plate 0.5 4 96 10 to 12 
4140 HR Plate 0.5 5.75 96 10 to 12 
4140 HR QT RD 1 12   18 to 24 
4140 HRA RD 1 12   18 to 24 
4140 NT Plate 6 12.25   10 to 12 
4140 QT CD RD 0.5 0.75   10 to 12 
4140 QT FG & RT RD 12 18   18 to 24 

 

Alloy Steel Bar Processing Services

  • Production Cutting
  • Special Cutting
  • Flat Grinding
  • Centerless Grinding
  • Machining
  • Heat Treating, Stress Relieving, Annealing
  • Straightening
  • Special Testing
  • Deburring
  • Peerless Steel checks all alloy steel bars for size, quality, and condition. We maintain accurate identification of grades and heats on all steel products.