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ASTM International (ASTM)

"Standard Specification for Headforms"


This standard specifies the materials, sizing, and manufacturing details of test headforms for use in the testing of protective headgear. Details of the exterior dimension of the headforms are included.

Standard Type(s)

An explicit set of requirements to be satisfied by a material, product, system, or service: Examples of specifications include, but are not limited to, requirements for; physical, mechanical, or chemical properties, and safety, quality, or performance criteria. A specification identifies the test methods for determining whether each of the requirements is satisfied.

Personal Protective Equipment
Head Protection

All equipment and/or accessories (whether or not detachable) designed and manufactured specifically to protect the head (typically from impact). This includes hard hats that protect from impact and penetration hazards as well as from electrical shock and burn hazards.

  • Headgear
  • Physical
Conformity Assessment Notes

This specification covers the materials, sizing, and manufacturing details of test headforms for use in the testing of protective headgear. This specification identifies the requirements for five test headform size codes: A, E, J, M, and O. All datum levels shall be quoted relative to the reference plane. The headforms shall be symmetrical about the midsagittal plane. Internal geometry may be defined to satisfy the requirements of the individual test specifications. The impact headforms shall be made of K1A-F magnesium, with the prescribed zirconium and magnesium composition, and shall conform to the specified requirements for: external dimensions, performance (resonant frequency), mass, and center of gravity. All impact headforms shall be marked with: headform size, basic plane, reference plane, and midsagittal (longitudinal) and coronal (transverse) planes through the vertical axis. Other headforms shall be made of material of sufficient strength and stiffness to maintain their geometry during testing and shall comply to the external dimension requirements.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.  Please see the full standard for complete details.


Additional References:

ASTM Standards

  • B92/B92M Specification for Unalloyed Magnesium Ingot and Stick For Remelting

Other Standards

  • EN 960 Headforms for Use in the Testing of Protective Helmets

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