A Detailed Guide to ASTM F489: The Benchmark for Testing Static Coefficient of Friction of Shoe Soles and Heels

1. Standard Overview: What is ASTM F489?
ASTM F489 is a laboratory testing standard developed by ASTM International (American Society for Testing and Materials). Its full title is “Test Method for Measuring the Static Coefficient of Friction of Shoe Soles and Heels Using a James Testing Machine”. First released in 1977, the standard has undergone a revision in 1988 and an update in 1996 to reach its current version, ASTM F489-96e1. Although it is currently labeled as “Inactive”, its core testing method remains an important basis for footwear manufacturers and testing institutions worldwide to evaluate the anti-slip performance of shoe soles.
As a technical specification focusing on the footwear field (ICS code: 61.060), the core objective of ASTM F489 is to accurately measure the static coefficient of friction (COF) of shoe sole/heel materials under dry and controlled conditions through a standardized process, providing quantitative data support for the design of product anti-slip performance and quality control.

2. Core Technical Content: Test Scope and Key Requirements
2.1 Definition of Application Scope
ASTM F489 clearly defines the test object as shoe sole and heel materials, and the test scenario as “controlled walking surface + controlled environmental conditions”. It only measures the static coefficient of friction under dry conditions — it is important to note that the standard explicitly states that “contaminants (such as oil stains, water stains) and special environments may change the test results”. Proto, for friction performance testing in wet or contaminated scenarios, reference should be made to other supplementary standards.
Navíc, the standard specifically cites two related specifications:
•ASTM D2047: Test Method for Measuring Static Coefficient of Friction of Floor Surfaces Using a James Testing Machine (used for calibrating the friction performance of the walking surface used in the test);
•ASTM F1646: Terminology Relating to Pedestrian Safety and Footwear (unifying the definition of terms in the testing process).
2.2 Testing Equipment and Parameter Standards
ASTM F489 specifies that testing must be conducted using a James Testing Machine. The typical equipment parameters (taking the XK-3038 model that meets the standard as an example) must meet the following requirements:
•Test speed: 25.4mm/s (fixed speed to ensure test repeatability);
•Test load: 3 main loads of 25lb each (total 75lb) + 5lb bracket load, simulating the plantar pressure during human walking;
•Test bench specification: 12″×12″ (approximately 30.5cm×30.5cm), with the friction contact area consistent with the size of the test bench;
•Unit system: The inch-pound (inch-pound) is the standard unit, and the values in parentheses are for reference only.
2.3 Testing Principle and Process
The core principle is based on the force balance law: The shoe sole/heel sample is brought into contact with the controlled walking surface by applying a load. The equipment records the static friction force in the horizontal direction and the normal pressure in the vertical direction. The static coefficient of friction = static friction force ÷ normal pressure.
Key steps of the standard process:
1.Sample preparation: Cut the shoe sole/heel material according to the standard size to ensure the surface is undamaged and free of contamination;
2.Equipment calibration: Calibrate the friction performance of the test bench surface in accordance with ASTM D2047, and confirm the accuracy of the equipment load and speed;
3.Environmental control: Maintain stable laboratory temperature and humidity (the standard does not specify a specific range, but it must be consistent throughout the process);
4.Test execution: Fix the sample on the equipment bracket, apply the specified load, move the test bench at a speed of 25.4mm/s, and record the peak value of static friction force;
5.Data processing: Repeat the test at least 3 times and take the average value as the final static coefficient of friction result.

3. Standard Application and Industry Value
3.1 Core Application Scenarios
•Footwear manufacturers: Optimize the formula of shoe sole materials (such as rubber hardness, pattern design) in the product R&D stage, and conduct batch quality sampling inspections during the production process to ensure that the anti-slip performance meets the standards;
•Testing institutions: Provide authoritative testing basis for the compliance certification and quality arbitration of footwear products;
•Purchasers (such as labor protection product companies, medical institutions): Evaluate the safety performance of footwear products and reduce the risk of users slipping (especially applicable to industrial, medical and other scenarios with strict requirements on anti-slip performance).
3.2 Limitations and Precautions of the Standard
•Status attribute: ASTM F489-96e1 is a version released in 1996 and is currently in an “Inactive” stát. Although it has not been repealed, attention should be paid to whether ASTM has released an updated replacement standard when using it;
•Scenario limitation: It is only applicable to dry environments. For wet and oily ground scenarios in actual walking, a comprehensive evaluation should be conducted in combination with standards such as ASTM F1677 (wet friction test);
•Safety responsibility: The standard clearly states that it “does not cover all safety issues”, and users need to establish their own safety protection measures during the testing process (such as equipment operation specifications, sample processing protection).

4. The Connection Between the Standard and Industry Development
The formulation and revision of ASTM F489 reflect the core demand of footwear safety testing: quantifying anti-slip performance and reducing use risks. Although the current version was released a long time ago, the model of “equipment standardization + process normalization + result quantification” established by it has laid a foundation for subsequent footwear friction testing standards.
With the development of footwear technology (such as the emergence of new environmentally friendly materials and intelligent shoe soles), the ASTM standard system is also continuously optimized. Recent revision trends include strengthening the accuracy of environmental control, refining the sample preparation process, and increasing data traceability requirements. Although these changes have not directly updated ASTM F489, they provide more rigorous supporting guarantees for the practical application of this standard.

Our product GA-1204 Shoes Sole Anti-skid Test Machine meets this standard.

Shoes Sole Anti-skid Test Machine

Standard: ASTM-F489

Použití
Sensing sole, friction coefficient has the functions to determine the slide of shoes: sole rubber mixing, or stop slippery agent adding quantity, different kinds, and produce different friction coefficient, can also measure the comparison, as the basis of developing ingredients.

Parametr
1.Test rychlosti: 25.4mm/SEC
2.Test area: 3 “* 3” (76.2*76.2mm)
3.Load: 25 LB*3
4.Weight of brackets: 5LB
5.Friction table: 12*12palec
6.Hlasitost: 55*80*170 cm
7.Hmotnost: 70kg

Product link:

https://www.gonoava.com/product/ga-1204-shoes-sole-anti-skid-test-machine/

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E-mailem: arlenliu@gonoava.com
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