33 Max

33 Max is carbon plate that has up to .33 carbon and is commonly used in counterweighting and load testing.


General Info About 33 Max

33 Max is commercial quality, hot rolled carbon plate that is frequently used for counterweighting and load testing. It is readily formed and welded with all conventional methods, but it is not always advised because of its potentially unknown composition.

  • Advantages/Disadvantages

    It is a carbon steel that is useful wherever projects require a good ratio of weight to size. It is not appropriate for projects requiring specific mechanical properties.

  • Industries

    Sometimes called M33 Steel, is used in a number of industries, especially elevator manufacturing, agricultural equipment, and heavy machinery.

  • Applications

    It is most commonly used for:

    • Elevator counterweights
    • Agricultural equipment counterweights
    • Crane load testing
  • Machining

    While it can be machined, we do not advise it unless the composition is known.

  • Welding

    While it can be formed and welded, we do not advise it unless the composition is known.

Typical Standards

Sizes routinely stocked (Imperial units)
Format Thickness WidthLength
Discrete (Mill Rolled) 1/2" - 3"10" - 96"48" - 120"

Chemical Properties

0.33Not Req.Not Req.Not Req.Not Req.

Mechanical Properties

Mechanical Properties
Tensile Strength, UltimateNot Req.Not Req.
Tensile Strength, YieldNot Req.Not Req.
Elongation at Break (in 200 mm)Not Req.Not Req.
Elongation at Break (in 50 mm)Not Req.Not Req.

Frequently Asked Questions

  • Why aren't mechanical properties specified for Max 33?


    It is not appropriate for projects requiring specific mechanical properties. It is typically used in applications requiring heavy weight at high value, where its tensile strength is irrelevant.

  • Why isn't the chemical composition required for Max 33?


    It is commercial grade carbon steel with a maximum specification of .33 carbon. Otherwise, its chemical composition is irrelevant to its typical end use of counterweighting and load testing.

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