When shopping for keycaps, you'll quickly encounter two dominant materials: PBT and ABS. Both are plastics, but they behave very differently under your fingertips and over time. Here's a clear breakdown of the six most important differences to help you make the right choice.
1. Durability and Shine Resistance
PBT wins. PBT (polybutylene terephthalate) is a denser, harder plastic that resists the greasy shine that develops with heavy use. ABS (acrylonitrile butadiene styrene) is softer and tends to develop a shiny, worn look on high-traffic keys like WASD and the spacebar within months. If you type for hours every day, PBT will look newer for much longer.
2. Sound Profile
PBT sounds deeper; ABS sounds crisper. PBT keycaps are generally thicker, which produces a deeper, more satisfying "thock" sound. ABS keycaps tend to be thinner and produce a higher-pitched, sometimes hollow sound. That said, sound is heavily influenced by your switches, case, and foam — so PBT alone won't guarantee a perfect sound profile.
3. Texture and Feel
PBT feels slightly rougher; ABS feels smoother. Fresh out of the box, ABS keycaps have a smooth, almost silky feel. PBT has a subtle texture that many typists prefer for grip and control. Over time, ABS becomes slippery as it shines up, while PBT maintains its texture.
4. Legend Printing Options
ABS has more flexibility; PBT is catching up. ABS is easier to mold and dye, which historically made it the go-to for double-shot legends and vibrant colorways. PBT is harder to work with, but modern manufacturing has made high-quality PBT doubleshot and dye-sublimated sets widely available. Dye-sublimation — one of the best legend methods — works exclusively on PBT.
5. Price
ABS is generally cheaper; quality PBT costs more. Budget keycap sets are almost always ABS. Mid-range and premium sets increasingly use PBT, especially for enthusiast-grade doubleshot or dye-sub sets. The price gap has narrowed significantly in recent years, making PBT accessible at most budget levels.
6. Warping and Stability
PBT can warp; ABS is more stable. One known downside of PBT is that it can warp during manufacturing, especially on longer keys like the spacebar. Reputable manufacturers have largely solved this problem, but it's worth checking reviews before buying a budget PBT set. ABS is more dimensionally stable and less prone to warping.
So, Which Should You Choose?
For most typists and enthusiasts, PBT is the better long-term investment. It's more durable, maintains its look and feel over time, and supports premium printing methods like dye-sublimation. ABS remains a solid choice for budget builds or when you want a specific double-shot colorway that isn't available in PBT.
Browse our curated selection of PBT keycap sets at Taptempo Keyboard — built to last and designed to impress.