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ASTM F3445: The New Standard for Slip Resistance — What Does It Mean?

Posted on February 02 2022



When deciding on footwear, slip resistance is one of the most important factors to consider for wearer safety. While other countries had long ago established slip resistance ratings for footwear, the US did not have an established SR specification. As of July 2021, the US finally introduced ASTM F3445.

This new Slip Resistant requirement establishes minimum coefficient of friction requirements to label footwear as slip resistant or "SR". It also levels the playing field  by which all manufacturers are evaluated and to which Safety Managers can refer when specifying or purchasing footwear.

What is ASTM?

All ASTM documents are “standards”. Manufacturers generally concern themselves with “Standard Test Methods” and “Standard Performance Specifications”.



The new ASTM F3445 “label” refers to standard performance specifications for slip Resistance and must appear on any footwear making slip resistance performance claims.


Measuring Slip Resistance

Slip resistance is measured by determining its Coefficient of Friction.




ASTM F2913 Test Method

ASTM F3445 is tested using the ASTM F2913 Test Method which establishes the Coefficient of Friction.


 

Slip Resistance is usually assessed with a tribometer (trīˈ bämitər).

 

A tribometer is an instrument that measures quantities such as coefficient of friction, friction force and wear volume between two surfaces in contact.

 

As a mechanical device, tribometers cannot tangibly account for individual pedestrian gait peculiarities or other intrinsic factors.

The SATRA TM144 is the tribometer for assessing slip resistance in footwear and is used in a number of standards including EN ISO 13287, CSA Z195-09, & ASTM F3445.

 

Footwear achieving COF of 0.40 when tested on dry and wet surfaces can claim the Slip Resistance label.


What does the ASTM F3445 mean for you?

The most important result of this new standard is that you, the wearer, can feel safe on slick or wet surfaces. With this new standard, consumers can choose the footwear that best fits their needs while being assured the footwear provides the traction required on the job.

A number of Tingley boots have undergone the ASTM test successfully, as shown by the Slip Resistance label on both our plain and safety toe styles.

Check out a complete list of Tingley Slip Resistant Boots.