3M Safety & Security Window Film System S2400

A New Generation of Security Film

3M Scotchshield Safety & Security Window Film System S2400 is the next generation of security window film from 3M Company. It is 24 mils (.024”) thick and unlike traditional PET-based window films, 3M S2400 is made of urethane (TPU), which is more flexible than PET and provides substantially greater Elongation at Break (560%). As urethane is more stretchable than PET, it will continue to absorb more energy as it stretches. Like traditional interior applied safety films, S2400 is optically clear and blocks out 99% of the sun’s UV rays.

3M S2400 Window Film and Impact Protection Adhesive can help prevent unwanted entry, harden school windows, minimize damage caused by spontaneous glass breakage, and turn standard glass into safety glazing.

S2400 is tested to the following standards:

16 CFR 1201
ANSI Z97.1
UL 972
ASTM F1233

3M Safety & Security Window Films, such as S2400, are not tested to ASTM F3561-22. Please read 3M’s technical bulletin explaining why.

School Safety Hardening

Delayed Entry

Incredible Tear Resistance

Urethane-Based Clear, Invisible Protection

Tested to ASTM F1233

Passes UL 972

Warrantied by 3M

S2400 Window Film in Action

See some of the features that enhance the performance of 3M Scotchshield Safety & Security Window Film System S2400.

Comparing Security Window Films: Urethane vs. PET

Comparing TPU to PET is like comparing apples and oranges. That means comparing a urethane to a PET-based film using typical industry characteristics is unrealistic due to the different natures of PET and urethane.

The Old Way

Below is a table of the physical characteristics used most often when comparing safety and security window films.

	S2400	22-mil PET	Advantage
Thickness	0.024"	0.022"	S2400
Maximum Elongation	560%	130%	S2400
Break Strength	77 lbs/in	469 lbs/in	22-mil PET
Tensile Strength	3,200 psi	22,000 psi	22-mil PET

As you can see from the table above, it is not feasible to compare a urethane to a PET-based film using typical performance characteristics. That’s because urethane and PET are different materials with different physical properties and characteristics. So, how can you compare urethane and PET films of similar thickness?

The New Way

3M testing shows that a film’s Graves Tear measure is a valid indication of the film’s ability to hold broken glass in place when the glass is exposed to some sort of trauma (forced entry, bomb blast, windstorm, etc). What is being measured by Graves Tear is the force necessary to tear a film at a stress concentration point.

The graph below shows what happens when you elongate (stretch) 3M S2400 and a 22-mil PET-based film. As you stretch the films, the resisting force is measured and recorded. More force is required to break the PET-based film but that film breaks much faster than S2400. The area under both curves is then calculated and compared to determine which film has greater Graves Tear. S2400 has 66% more area under its curve than does the 22-mil PET-based film, thereby allowing S2400 to better absorb energy from an impact.

	S2400	22-mil PET
Graves Tear	24.6 lbf*in	14.8 lbf*in

Summary: Which Film Offers Better Protection?

The primary advantage of urethane-based 3M Scotchshield Security Window Film S2400 is that it will absorb more energy as it stretches than PET-based films of similar thickness. 3M testing shows that this translates into greater protection from broken glass due to various traumas.

Product Information

Architectural Specifications	3M S2400 Specifications
Technical Data Sheet	3M S2400 Technical Data Sheet
Warranty	Commercial/Government Warranty Residential Warranty
Family Card	3M S2400 Family Card