10 May
TPO vs. ABS Plastic Sheet: Choosing the Right Material for RV, Agricultural & Industrial Thermoforming
If you’ve ever had a conversation with a product engineer about plastic sheet selection, you’ve probably noticed how quickly it gets specific. The right material isn’t the one that sounds most familiar or costs the least per pound — it’s the one that performs reliably in your actual end-use environment, survives your thermoforming process, and still looks the part ten years after it leaves the factory.
Two materials dominate custom plastic sheet specifications across recreational vehicles, agricultural equipment, and industrial applications: TPO (thermoplastic polyolefin) and ABS (acrylonitrile butadiene styrene). Both are well-established, both are thermoformable, and both come in a wide range of grades, colors, and finishes. But they’re not interchangeable — and making the wrong call early in the design process is an expensive correction to make later.
At SIMONA PMC, we produce both materials in custom grades, finishes, and constructions out of our facility in Findlay, Ohio. We’ve had this comparison conversation with engineers and procurement teams across the RV industry, agricultural equipment manufacturing, and industrial fabrication — and the answers aren’t always intuitive. Here’s how we think about it.
What Is TPO and Where Does It Perform Best?
Thermoplastic polyolefin is a polymer blend — typically polypropylene with EPDM rubber — formulated to combine the stiffness and chemical resistance of polypropylene with the impact toughness and flexibility of rubber. The result is a material that resists cracking under impact, handles cold weather without going brittle, and weathers outdoor exposure remarkably well.
TPO has become the dominant material in several demanding exterior applications for exactly these reasons. In the RV industry specifically, TPO sheet is widely used for exterior panels, sidewalls, and trim components that need to handle road vibration, temperature cycling, UV exposure, and occasional physical impact without cracking, fading, or delaminating.
Key Advantages of TPO
▸ Cold weather impact resistance — TPO maintains its toughness at temperatures where ABS becomes increasingly brittle, making it the preferred choice for applications exposed to cold climates or seasonal temperature swings.
▸ Lower coefficient of linear thermal expansion (CLTE) — SIMONA PMC’s TPO grades have less than half the CLTE of ABS, and approximately 75% lower CLTE than polyethylene. This means TPO components experience significantly less dimensional change with temperature — a critical factor for panels that need to fit precisely at both 10°F and 100°F.
▸ Recyclability — TPO is an olefinic material and is fully recyclable at end of life, an increasingly important factor in sustainability-driven procurement decisions across the RV and automotive supply chains.
▸ Sound deadening characteristics — Certain TPO grades offer acoustic damping properties that are relevant for cabin panels and interior components where noise reduction is a design requirement.
▸ Weatherability — With appropriate UV stabilization packages, TPO sheet resists color fade, chalking, and surface degradation from outdoor exposure better than many alternatives.
SIMONA PMC Highlight: Our Exultra™ 2700 soft-touch TPO delivers a premium tactile surface for interior and exterior automotive and RV applications — combining the performance of TPO with a refined finish that end users notice.
What Is ABS and Where Does It Perform Best?
ABS is a terpolymer — acrylonitrile for chemical resistance and rigidity, butadiene for impact toughness, and styrene for processability and surface finish. It’s been a workhorse of the plastics industry for decades, and for good reason. ABS offers an excellent balance of stiffness, impact resistance, and thermoformability that makes it reliable across a huge range of applications.
In thermoforming applications specifically, ABS has some real advantages. It processes over a broad temperature window, produces clean detail and sharp definition when formed over complex tooling, and delivers a naturally glossy surface that accepts paint, printing, and secondary decoration well.
Key Advantages of ABS
▸ Thermoforming processability — ABS is forgiving in the thermoforming process, with a wide forming window that accommodates variation in sheet temperature without significant defects. For complex geometries with deep draws, this processability advantage matters.
▸ Surface appearance — ABS naturally produces a smoother, higher-gloss surface than TPO in many grades, making it well-suited to visible interior components where aesthetics drive specification.
▸ Rigidity and stiffness — For applications requiring dimensional rigidity and resistance to creep under sustained load, ABS typically offers better performance than TPO at equivalent gauge.
▸ Paintability and secondary processing — ABS bonds well with adhesives, accepts painting without extensive surface preparation, and is compatible with a wide range of decorating processes.
▸ Wide availability in custom colors and finishes — ABS is produced in an extensive range of colors and surface textures, supporting design flexibility across interior and exterior applications.
Head-to-Head: Where the Decision Points Lie
For most engineers choosing between TPO and ABS, the decision comes down to a handful of specific application requirements. Here’s how the comparison typically plays out across the markets SIMONA PMC serves:
RV Exterior Applications
TPO wins here in most cases. The combination of cold weather toughness, low CLTE, and weatherability makes it better suited to the outdoor exposure and temperature cycling that RV exterior components face. Sidewall panels, roof components, and exterior trim specified in TPO hold up better over the vehicle’s service life than ABS equivalents in the same environment.
RV & Vehicle Interior Components
ABS is often the preferred choice for interior applications — instrument panels, cabinetry facings, and trim pieces — where surface appearance and rigidity take priority over cold weather impact performance. Vinyl/ABS laminates are a particularly common construction for interior surfaces, combining the decorative flexibility of vinyl with the structural backing of ABS sheet.
Agricultural Equipment
Agricultural applications span a wide range of requirements — from hood and fender panels on large equipment to cab interior components on tractors and utility vehicles. TPO is frequently specified for exterior bodywork where mud, moisture, and temperature variation are part of daily operating conditions. ABS finds its place in cab interiors and instrument housings where appearance and rigidity are more relevant than weatherability.
Industrial & UTV / Off-Road Applications
For UTV door panels, snowmobile hoods, and ATV roofing — all applications SIMONA PMC actively supplies — TPO’s toughness and low CLTE make it the dominant specification. These components operate in harsh outdoor conditions and need to fit precisely across wide ambient temperature ranges. TPO’s performance envelope is simply better suited to that combination of requirements.
The Role of Custom Extrusion in Material Selection
One aspect of the TPO vs. ABS decision that often gets overlooked in material comparisons is the role of the extrusion process itself. Both materials can be produced as mono-extruded sheet, co-extruded sheet systems, or laminated constructions — and the choice of construction significantly affects performance.
At SIMONA PMC, custom means something specific. It’s not a catalog item with a color substitution — it’s a material formulated and produced to meet the requirements of a particular application. Our in-house expertise in TPO, ABS, vinyl/ABS laminates, and modified acrylics means we can recommend and produce constructions that standard catalog suppliers can’t offer.
For example, acrylic-capped TPO — our StrataGem™ SMR product line — delivers the outdoor weatherability of acrylic over the impact resistance and formability of a TPO substrate. This construction is specified for applications where surface durability and gloss retention are as important as the structural properties of the base material.
PMC Capability Note: SIMONA PMC handles laminates, mono-layer, and co-extruded sheet construction in-house. Our single-station thermoformer allows us to conduct quality performance testing and rapid prototyping on new sheet products — reducing development time for custom material specifications.
Why Material Partner Selection Matters as Much as Material Selection
The most technically correct material specification still fails if the supplier can’t deliver it consistently, at scale, and with the process knowledge to troubleshoot when things get complicated in production.
SIMONA PMC’s position within the SIMONA AMERICA Group means customers have access to not just our Findlay, OH manufacturing capability, but the broader material science resources of a global thermoplastics group. When a particularly demanding application requires a material combination or formulation that pushes the boundaries of standard catalog options, that depth of technical resource matters.
Our ISO-certified quality system, flexible production capabilities, and vertically integrated manufacturing — which includes decorative film production and lamination — mean we can function as a genuine one-stop resource for custom extruded sheet and roll stock requirements across TPO, ABS, vinyl, and acrylic material families.
Making the Right Call for Your Application
If your application involves outdoor exposure, cold climates, or dimensional precision across wide temperature ranges — TPO is almost certainly the right starting point. If surface appearance, stiffness, and thermoforming detail are the primary drivers — ABS deserves serious consideration.
But the honest answer is that the best material for your application is the one that’s been evaluated against your specific combination of requirements — not the one that’s easiest to source or the one that worked for the last project. Custom thermoforming applications deserve custom material thinking.
That’s what SIMONA PMC is built to provide.
Talk to a SIMONA PMC Materials Expert
Whether you’re in the early stages of material selection or troubleshooting performance issues with a current specification, SIMONA PMC’s technical team can help. We offer custom extrusion, rapid prototyping, and hands-on application support across TPO, ABS, and specialty thermoplastic sheet products.
📍 SIMONA PMC — Findlay, Ohio