PBT vs ABS: Which Keycap Material Is Right for You?

If you're building your first custom mechanical keyboard or upgrading an existing one, the first question you'll face is: PBT or ABS keycaps?

It's the mechanical keyboard equivalent of "paper or plastic?" — except the answer has real consequences for how your keyboard sounds, feels, and ages over time. Every keycap material enthusiast has a strong opinion, and for good reason. The material you choose affects typing feel, sound profile, durability, and even the long-term look of your board.

In this guide, we'll break down PBT vs ABS keycaps from every angle — material science, sound, feel, longevity, and price — so you can make the right call for your setup.

What Are ABS Keycaps?

ABS (Acrylonitrile Butadiene Styrene) is the most common plastic used in keycaps worldwide. It's the material that comes stock on most pre-built keyboards from brands like Corsair, Logitech, Razer, and Ducky. ABS has been the industry standard for decades because it's cost-effective, easy to mold into complex shapes, and takes on vibrant colors and legends exceptionally well.

Pros of ABS Keycaps

• Crisp, vibrant legends — ABS takes double-shot molding and dye-sublimation better than PBT, allowing for sharper, more colorful designs
• Smoother feel — Many typists prefer the smooth, slightly waxy texture of ABS under their fingertips
• More color options — ABS can achieve a wider range of colors and translucency effects, perfect for shine-through RGB keycaps
• Lighter weight — Slightly lighter than PBT, which can affect typing feel on certain switches
• Lower cost — Generally cheaper to manufacture, making ABS sets more affordable

Cons of ABS Keycaps

• Shine develops over time — The single biggest complaint. After 6–12 months of use, ABS keycaps develop a glossy, polished "shine" on frequently used keys (WASD, spacebar, Enter)
• Less durable in the long run — ABS wears faster than PBT, though this can take years to become noticeable
• Can yellow with UV exposure — White or light-colored ABS keycaps may yellow over time if exposed to direct sunlight
• Thinner walls on cheaper sets — Budget ABS keycaps often have thin walls that sound "clacky" and hollow

What Are PBT Keycaps?

PBT (Polybutylene Terephthalate) is the premium alternative that has gained massive popularity in the custom keyboard community over the last decade. PBT is a harder, more crystalline plastic that resists wear and shine far better than ABS.

Pros of PBT Keycaps

• Shine-resistant for years — PBT keycaps maintain their matte texture far longer than ABS, often showing no shine even after years of daily use
• Superior durability — PBT is harder and more resistant to physical wear and chemical damage
• Better sound profile — PBT keycaps tend to produce a deeper, more satisfying "thock" sound compared to ABS's higher-pitched "clack"
• Textured grip — Many PBT keycap sets have a pleasant grainy texture that gives your fingertips more purchase
• UV and heat resistant — PBT won't yellow easily and handles higher temperatures

Cons of PBT Keycaps

• More expensive — Quality PBT keycap sets typically cost $40–$100+, compared to $20–$50 for comparable ABS sets
• Fewer vibrant color options — PBT struggles with very bright or translucent colors; shine-through RGB PBT keycaps are less common
• Can warp during manufacturing — PBT shrinks more during cooling, which can cause slight warping on longer keys (spacebars) in cheaper sets
• Heavier weight — PBT keycaps are slightly heavier, which can change the actuation feel on lighter switches

PBT vs ABS: Side-by-Side Comparison

Sound Profile: PBT vs ABS

This is where personal preference matters most. If you're in the mechanical keyboard community, you've heard the terms "thock" and "clack" thrown around. Here's what they mean for your keycap material choice.

PBT Sound: The "Thock"

PBT keycaps produce a deeper, fuller, and slightly muted sound. The denser material absorbs more vibration, resulting in a lower-pitched tone that many enthusiasts describe as "creamy" or "thocky." This is especially noticeable on linear switches (like Cherry MX Reds or Gateron Yellows) paired with a polycarbonate or aluminum plate.

Pro tip: For the deepest thock, pair thick PBT keycaps with a polycarbonate plate and lubed linear switches. The combination is legendary in the custom community.

ABS Sound: The "Clack"

ABS keycaps produce a brighter, crisper, and higher-pitched sound. The lighter material resonates more, creating that classic mechanical keyboard "clack" sound. This works particularly well with clicky switches (Cherry MX Blues, Box Jades) where you want every keystroke to be heard.

Which One Should You Choose?

Choose PBT Keycaps If:

• You use your keyboard 6+ hours daily (developer, writer, gamer)
• You want your keycaps to look the same in year 3 as they did in week 1
• You prefer a deeper, "thocky" sound profile
• You don't need RGB shine-through legends
• You're building a premium custom keyboard

Choose ABS Keycaps If:

• RGB lighting is important to you — shine-through ABS is the gold standard
• You're on a tighter budget and want a good-looking set for less
• You swap keycaps frequently and want the widest color variety
• You prefer a smooth, glossy feel under your fingers
• You're buying for a secondary board or a beginner build

What About Double Shot PBT Keycaps?

Double shot PBT keycaps are the best of both worlds. The "double shot" manufacturing process molds two layers of plastic together — the keycap body and the legend — so the legend never fades, wears off, or needs to be printed. Combined with PBT's natural durability, double shot PBT keycaps offer the longest-lasting legends and the most durable keycap body available.

At KeycapsHub, our double shot PBT keycaps are made with thick wall construction for optimal sound and feel. They're the top recommendation for anyone building a daily-driver keyboard that needs to look and perform great for years.

FAQ

Do PBT keycaps sound better than ABS?

Generally yes — PBT keycaps produce a deeper, fuller "thock" sound compared to ABS's brighter "clack." However, sound preference is subjective. Some typists prefer the crispness of ABS, especially on clicky switches. The plate material, switch type, and case also significantly affect overall sound.

Do PBT keycaps get shiny?

PBT keycaps are highly resistant to shine. While no material is completely immune to wear with decades of use, PBT keycaps will maintain their matte texture for years — a major advantage over ABS keycaps which typically develop shine within 6–12 months.

Are PBT keycaps worth the extra money?

For most daily drivers, yes. The additional $20–$50 over ABS pays for years of extra durability, better sound, and no shine. If you're building a keyboard you'll use every day, PBT is the better long-term investment.

Can I mix PBT and ABS keycaps on the same keyboard?

Technically yes, but it's not recommended. The different heights, weights, and sound profiles can create an inconsistent typing experience. If you're mixing for aesthetic reasons (like adding an artisan keycap to a PBT set), the single different keycap won't create noticeable issues.

What about keycap profiles — Cherry vs OEM vs SA?

Keycap profile (the shape and height of the keycap) is separate from material. You can find both PBT and ABS keycaps in Cherry, OEM, SA, XDA, and other profiles. The material affects feel and sound, while the profile affects typing ergonomics. Check out our complete guide to keycap profiles for the full breakdown.

Where can I buy quality PBT keycaps?

KeycapsHub stocks a curated selection of premium PBT keycap sets, including double shot PBT, thick-walled constructions, and artisan-compatible designs. Each set is vetted for warping, legend quality, and thickness.

Final Verdict

For 80% of mechanical keyboard enthusiasts, PBT keycaps are the better choice — they last longer, sound better, and maintain their appearance through years of daily use. ABS keycaps still have their place in RGB-focused builds, budget setups, and collections where color variety matters most.

If you're still unsure, consider this: the custom mechanical keyboard community overwhelmingly prefers PBT for daily drivers. That preference exists for a reason.

Ready to upgrade your keycaps? Browse our collection of PBT keycap sets at KeycapsHub, or dive deeper into keycap profiles to understand how shape and height affect your typing experience.

— The KeycapsHub Team