4340 sprocket forgings

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We supply quality 4340 sprocket forgings. Our 4340 sprocket forgings have high strength, ductility, toughness, creep resistance, and fatigue resistance.  

4340 sprocket forgings mechanical properties

The mechanical properties of 4340 are highly dependent on the heat treatment. 

  • yield strengths 740-1860 MPa
  • tensile strengths: 860-1980 MPa
  • elongations: 11-23%,
  • plane strain fracture toughness: 53-110 MPa√m
4340 sprocket forgings 4340 steel forgings
4340 sprocket forgings

4340 sprocket forgings production process

  1. hot forging
  2. annealing
  3. rough machining
  4. NDT Test
  5. heat treatment
  6. mechanical properties test
4340 sprocket forgings after annealing
4340 sprocket forgings after annealing
4340 sprocket forgings ready for rough machining
4340 sprocket forgings ready for rough machining
4340 sprocket forgings rough machining
4340 sprocket forgings rough machining
Semi-rough machined 4340 sprocket forgings
Semi-rough machined 4340 sprocket forgings
Ultrasonic test to 4340 sprocket forgings
Ultrasonic test to 4340 sprocket forgings
4340 sprocket forgings after heat treatment
4340 sprocket forgings after heat treatment
4340 sprocket forgings packed by wood case
4340 sprocket forgings packed by wood case

4340 steel forgings chemical composition