400 Series Stainless Steel Bar

Get 400 Series rounds, square, hex, flats, and more from King Steel. We carry grades 410, 416, and 440C. All grades in this series are magnetic, offer moderate corrosion resistance, and can achieve high hardness when heat treated. 400 Series stainless steel is commonly used for valve stems and shafts, machine components, gauge blocks, and more.

Chemical Composition

Varies based on the specific grade. See individual grade pages for more information.

Shapes & Sizes Available

  • Rounds
    Rounds .250in - 15in
  • Square
    Square .5in - 7in
  • Round Corner Square
    Round Corner Square 1in - 2.062in
  • Hex
    Hex .562in - 2.093in
  • Flats
    Flats .25in x 1 - 1in x 6in

Requirement Specifications we can meet:

  • ASTM A276
  • ASTM A479


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Process Services

King Steel offers a variety of value-added services to improve your workflow and quality control. Our processing capabilities include:

  • Turn and Polish
  • Cold Drawing
  • Annealing
  • Chamfering
  • Grinding
  • Quench and Temper
  • Heat Treated
  • Machine Straightening
  • Precision Saw Cutting
  • Custom Shapes
  • Shot Blast
  • Eddy Current Testing
  • Turn, Ground & Polished
  • Cold Drawn, & Polished
  • Straighten & Cut
  • Ultrasonic Testing
  • Pickle & Oil
  • Stress Relieve
  • Normalize
  • Case Hardening

Learn more about our processing capabilities.

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