Knowledge What does the 'M' in ASTM F2413-18 M/I/C EH PR MT stand for? Decoding Safety Footwear Labels
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Updated 3 days ago

What does the 'M' in ASTM F2413-18 M/I/C EH PR MT stand for? Decoding Safety Footwear Labels


In short, the 'M' in an ASTM F2413-18 rating indicates the footwear is designed and certified to meet the standard for Men's sizing and fit. This is the first piece of information in a multi-part code that specifies the exact safety features of the boot or shoe.

The letters and numbers on your safety footwear are not just a model number; they are a concise, standardized language. Understanding this code allows you to verify, at a glance, the exact hazards a boot is designed to protect you from.

Decoding the ASTM F2413 Safety Label

The full line, ASTM F2413-18 M/I/C EH PR MT, is a formal declaration of the specific protections offered. Each part of this code represents a different safety feature that has been tested and certified. Let's break down the example line by line.

Gender Designation (M)

The 'M' simply stands for Men's. If the footwear were designed for women, this letter would be an 'F'. This part of the code addresses the fit and sizing standards used in the manufacturing and testing process.

Safety Toe Protection (I/C)

This is the most fundamental feature of safety footwear. The label must carry a rating for both impact and compression resistance for the toe area.

  • 'I' stands for Impact. This rating confirms the protective toe cap can withstand a significant impact from a dropped object.
  • 'C' stands for Compression. This rating confirms the toe cap can withstand a significant rolling or compressive force.

Electrical Hazard Protection (EH)

The 'EH' designation certifies that the footwear is constructed to protect the wearer from open electrical circuits. These boots have non-conductive soles and heels that can reduce the potential for electric shock when the sole is the primary point of contact.

Puncture Resistance (PR)

A 'PR' rating means the footwear has a puncture-resistant plate built into the sole. This plate is designed to protect the foot from sharp objects like nails, scrap metal, or glass that could otherwise penetrate the bottom of the boot.

Metatarsal Protection (MT)

The 'MT' designation indicates the presence of a metatarsal guard. This component is designed to protect the top of the foot—the delicate metatarsal bones—from impact and compression injuries from falling or dropped objects.

Understanding the Limitations

Knowing what the codes mean also involves understanding what they don't mean. Misinterpreting the label can lead to selecting the wrong level of protection.

A Feature Isn't Present If Not Listed

The presence of a code confirms a feature exists. Its absence confirms it doesn't. For example, a boot labeled only M/I/C has a safety toe but offers no certified protection against electrical hazards, punctures, or metatarsal impacts.

The Standard Year (-18) Matters

The number following the standard, in this case, -18, indicates the year the standard was published (2018). Safety standards are periodically updated, so this number confirms which version of the testing protocol the footwear met.

EH is Not for Every Electrical Environment

Electrical Hazard (EH) boots are secondary protection for accidental contact with live circuits. They should not be confused with Static Dissipating (SD) or Conductive (CD) footwear, which are designed for entirely different hazards related to controlling static electricity discharge.

Matching the Label to Your Hazard

Use this quick guide to ensure your footwear's rating aligns with your workplace risks.

  • If you work around heavy falling or rolling objects: Your absolute minimum is 'I' and 'C' ratings, with 'MT' being critical if objects could strike the top of your foot.
  • If you are an electrician or work near live circuits: The 'EH' rating is a non-negotiable requirement for secondary shock protection.
  • If you work in construction or on sites with sharp debris: Look for the 'PR' code to protect against sole punctures from nails and other hazards.
  • If the gender designation is your only concern: 'M' simply confirms the boot follows men's sizing standards; all protective qualities are tested to the same rigorous ASTM benchmarks regardless of gender.

Understanding this safety language ensures you select footwear that provides the precise protection required for your work environment.

Summary Table:

Code Meaning Protection Provided
M Men's Sizing and fit for men
I/C Impact/Compression Protects toes from heavy falling/rolling objects
EH Electrical Hazard Reduces risk of electric shock
PR Puncture Resistant Shields sole from sharp objects like nails
MT Metatarsal Guards the top of the foot from impact

Need Certified Safety Footwear for Your Team?

As a large-scale manufacturer, 3515 produces a comprehensive range of ASTM-certified safety footwear for distributors, brand owners, and bulk clients. Our production capabilities encompass all types of safety shoes and boots, ensuring your workforce has the precise protection they need.

Let us help you equip your team with the right safety gear.

Contact us today to discuss your requirements and get a quote!

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