Hey there, By Material

If you’ve spent any time in manufacturing, product design, or even just building something that needs to last—whether it’s a bike frame, a kitchen countertop, or a part for a medical device—you’ve probably heard the word “resilience” thrown around a lot. But let’s be real: most people use it like a buzzword, right? They say a material is “resilient” and call it a day. But when I’m sourcing materials for By Material (that’s the name of the platform I work with, for anyone new here), I don’t just care about the marketing fluff. I care about actual, measurable resilience—the kind that doesn’t fail when you need it most.
First, let’s get one thing straight: resilience in materials isn’t the same as “toughness.” Or “strength.” Or “durability.” Those are related, but they’re different. Strength is how much force a material can take before it bends or breaks. Toughness is how much energy it can absorb before it cracks. Durability is how long it lasts under normal use. Resilience? That’s the ability to bounce back—literally. It’s the energy the material gives back when you push on it, the way it doesn’t stay bent out of shape, the way it recovers its form even after a big impact. And for By Material, that’s non-negotiable. Because the people who use By Material aren’t just making random stuff—they’re making things that matter.
Let’s break this down by the main materials we supply, because that’s what y’all care about, right? No jargon, just real talk.
Starting with our top pick: thermoplastic polyurethanes (TPUs). I know, I know—TPUs are pretty common, but not all TPUs are created equal. The ones we stock for By Material have a resilience score (we use the standard Izod impact test and rebound resilience test, if you care) that’s way higher than generic TPUs. Let’s put that in perspective: a typical rubber band, when you stretch it and let go, loses some energy as heat, right? It doesn’t snap back perfectly. Our TPUs? They rebound 90% of that energy. That’s why you’ll see them in things like phone cases that don’t shatter after dropping, or sports shoe soles that don’t get flat after a month of wear. But here’s the thing about TPU resilience that most suppliers skip: it doesn’t drop when the temperature swings. Leave a generic TPU case in your car on a 100°F summer day, it gets soft and doesn’t bounce. Leave it in a -20°F winter night, it gets brittle and cracks. Our By Material TPUs? They stay resilient from -40°F to 175°F. That’s because we source specific grades that are formulated with cross-linking agents that lock in that bounce, no matter the conditions. I’ve tested this myself—left a sample in my freezer for 24 hours, dropped it from 6 feet onto concrete, and it bounced right back, no chips, no dents. Most generic TPUs would split in half.
Next up: carbon fiber reinforced polymers (CFRPs). People think carbon fiber is all about being stiff and strong, which it is, but resilience is where it really shines for By Material. Wait—stiff materials are usually not resilient, right? Like glass—super strong, but if you bend it even a little, it breaks. Carbon fiber is different. The way the fibers are aligned (we use unidirectional and woven fabrics tailored for resilience) means that when there’s an impact, the energy isn’t concentrated in one spot—it’s spread out along the fibers. Let me explain with an example: a generic carbon fiber bike frame might crack if you hit a pothole too hard. Our By Material carbon fiber frames? They absorb that impact, and the fibers shift just enough to relieve stress, then snap back. I worked with a bike brand last year that was using a cheaper carbon fiber, and their frames had a 12% return rate for impact cracks. Switched to our grade, and that dropped to less than 1%. The key here is the polymer resin we use—epoxy modified with elastomers, which adds that “give” without sacrificing the strength of the carbon fibers. So it’s not just the carbon, it’s the mix. That’s the resilience secret we don’t keep hidden, but we don’t shout about it either.
Then there’s silicone. Yeah, silicone is easy to find, but again—By Material’s silicone grades are for resilience, not just being squishy. Generic silicone gets sticky over time, or breaks down when exposed to UV light. Our silicone? It’s formulated with UV stabilizers and cross-linking that keeps it elastic for years, not months. Resilience for silicone here means it doesn’t deform permanently. Think about a silicone gasket for a plumbing system—if it gets compressed, you want it to go back to its original shape to keep the seal. I’ve had a sample of our silicone compressed at 50% strain for 10,000 cycles, and when I released it, it was back to within 1% of its original thickness. Generic silicone? It was 15% thinner. For industries like food and beverage, or aerospace, that’s a big deal—gaskets that fail cause leaks, which cost time and money, even safety issues. Our By Material silicone doesn’t just last, it works the way it’s supposed to because of that consistent resilience.
Wait, let’s talk about a less obvious one: recycled materials. A lot of people think recycled materials are less resilient, right? Like, if you use plastic made from old water bottles, it’s flimsy. But for By Material, we source recycled versions of all the above (TPU, CFRP, silicone) that have the same resilience as virgin. How? We don’t just melt down plastic and remold it—we use chemical recycling that breaks the material down to its base molecules, then reformulate it with the same additives for resilience. I tested a recycled TPU key fob case from another supplier that cracked after 100 drops. Our recycled TPU case? 500 drops, no crack, still bounces. That’s important because so many of our customers care about sustainability, but they don’t want to sacrifice performance. Resilience doesn’t have to come at the cost of being green, and that’s a big part of what we do for By Material.
Now, let’s get real about why this matters beyond the lab tests. As a supplier, I’ve seen what happens when a material’s resilience is just marketing. A customer will order a bunch of “resilient” parts, and within a month, they’re back, broken, because the material couldn’t bounce back from everyday use. With By Material, that doesn’t happen. Because we test every batch. Not just a sample here and there—we do random audits on incoming materials, checking rebound resilience, impact resistance, that temperature performance I talked about. Last quarter, a batch of TPU came in that was slightly off-spec (we caught it, don’t worry), and instead of shipping it, we sent it back to the manufacturer. That’s the kind of attention to detail that makes resilience real, not just a word on a spec sheet.
I also want to address a common myth: resilience means it can take any impact, forever. No. No material is indestructible. Resilience is about being able to handle the loads it’s designed for, over and over, without failing. A glass window is strong, but if you hit it with a hammer, it breaks. Our TPU window film (yeah, we do that too) is designed to handle hail, minor impacts, repeated opening and closing. Hit it with a baseball, it might scratch, but it won’t shatter, and it will go back to being smooth. That’s resilience. It’s about matching the material’s resilience to the job it’s supposed to do, not overpromising.
So why does By Material rely on these specific materials with measurable resilience? Because the customers on By Material—they’re builders, designers, innovators. They don’t want to replace parts every few months. They want to make products that stand the test of time. I’ve had a small business owner tell me that she uses our TPU for her custom dog collars, and her customers say the collars don’t crack even after their dogs drag them through mud, jump in water, get tossed around. That’s not magic—that’s material resilience. That’s what we deliver.
If you’re here because you’re working on a project, whether it’s a consumer product, industrial part, medical device, or something else, and you need a material that actually has real resilience (not the kind you see in a brochure), I’m your guy. We can talk about what load the part will take, the temperature ranges it’ll face, how often it’ll be used, and we’ll match you with the right By Material grade. No pressure, no sales pitch—just straight talk about what works.

Don’t waste time with materials that call themselves resilient but fall apart when you use them. Let’s get you the stuff that actually bounces back. Reach out to chat about your project and how our materials’ resilience can help make your product better.
Commercial Distribution Box References
ASTM D2632 – Standard Test Method for Rubber Property—Rebound Resilience by Vertical Rebound
ASTM D256 – Standard Test Methods for Determining the Izod Pendulum Impact Resistance of Plastics
ASM International. (2020). Materials Resilience: Understanding Mechanical and Physical Property Recovery. ASM Handbook, Volume 19: Fatigue and Fracture.
International Organization for Standardization (ISO) 833 – Rubber, vulcanized or thermoplastic—Determination of hardness (hardness between 10 IRHD and 100 IRHD)
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E-mail: kevin@apekselectric.com
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