4140 alloy structural steel belongs to medium hardenability steel with excellent fatigue resistance,good processability and small deformation when processing. After heat treatment,4140 steel have good intensity and nice synthetic mechanical property.4140 alloy structural steel used in the manufacture of high strength forgings.such as Locomotive traction with the big gear,supercharger transmission gears,rear axle,huge load of connecting rod and spring clips,also available at 2000 meters deep of oil drill pipe joints and fishing tools,can also be used for bending machine mould, etc.

4140 INVENTORY INFORMATION

Sizes:

  • 2mm to 1200mm
  • We can accept customized sizes

Delivery Time:

  • 7-10 working days for steel in stock.
  • 20-60 working days for direct production based on the quantity.

Sizes:

  • 8mm to 1200mm
  • We can accept customized sizes

Delivery Time:

  • 7-10 working days for steel in stock.
  • 20-60 working days for direct production based on the quantity.
4140 DETAILED INFORMATION
  • Chromium molybdenum alloy steel
  • Slightly higher carbon content then 4130
  • Greater strength and heat treatment
  • Applications in the oil and gas sector
  • Connection rods, collets, conveyor pins
  • Gears, stem assemblies
  • Pump shafts and tool holders
GradeCSiMnPSCrMoNi
42CrMo0.38~0.450.17~0.370.50~0.8≤0.035≤0.0350.9~1.20.15-0.25≤0.3
41400.40~0.450.15~0.350.75~1.0≤0.035≤0.0400.8~1.10.15-0.25-
SCM440.38~0.430.15~0.350.60~0.9≤0.030≤0.0300.9~1.20.15-0.30≤0.25
1.72250.38~0.45≤0.400.60~0.9≤0.025≤0.0350.9~1.20.15-0.30-

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ST 52-3 Steel Round Bar

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