• 1: Home
• 8: About Us
• 9: Application
  • 9.1: Well Heads and Production Equipment
  • 9.2: Valve and Actuators
  • 9.3: Downhole Tools
  • 9.4: Well Construction
  • 9.5: Heavy Industry
• 10: Products
  • 10.1: Low Alloy Steel
  • 10.2: Stainless Steel
  • 10.3: Nickel Alloy
  • 10.4: SUPERQUENCH STEELS
• 11: Processes
  • 11.1: Saw Cutting
  • 11.2: Machining
  • 11.3: HeatTreat
  • 11.4: Fabrication
  • 11.5: Assembly
  • 11.6: Testing
• 12: Quality
  • 12.1: Customer Questionaire Response
  • 12.2: Health, Safety, Environment
• 13: Stocked Materials
  • 13.1: Low Alloy Steels
    • 13.1.1: AISI 4130
    • 13.1.2: AISI 4140
    • 13.1.3: AISI 4145
    • 13.1.4: AISI 4340
    • 13.1.5: AISI 8630M
    • 13.1.6: ASTM A182 F22
    • 13.1.7: BS 4360 50D (St-52-3)
  • 13.2: Stainless Steels
    • 13.2.1: AISI410SS
    • 13.2.2: 17/4 PH
    • 13.2.3: 420M (13Cr) Stainless Steel
  • 13.3: Nickel Alloys
    • 13.3.1: 718 Nickel Alloy
    • 13.3.2: 625 Nickel Alloy
• 14: Delivery
  • 14.1: Furnace Schedule
• 15: Tools & References
  • 15.1: Hardness Table
  • 15.3: Steel Grade Cross Reference
  • 15.4: Acronyms and Issuing Country
  • 15.5: Pipe Wall Thickness Standards (Inches)
  • 15.6: Pipe Wall Thickness Standards (mm)
  • 15.7: Weight Calculator
  • 15.8: Unit of Measure Converter
• 16: Contact Us

AISI 4340

AISI 4340 material is stocked in the following conditions and sizes:

2" thru 10" diameter bar in 1/2" increments, heat treated to achieve 110k yield strength

10" thru 25" diameter bar in 2" increments, in the annealed/normalized condition

34" diameter bar in the annealed/normalized condition, ready for heat treatment to your specifications