The spec sheet, the fume story, the honest limits, and where ABS actually wins. Every number is cross-checked against the manufacturer's Technical Data Sheet (TDS V5.5).
Custom ABS 3D printing service · UK · quoted in 6 hours.
Holds its shape in a hot car where PLA and PETG soften · acetone-smoothable to a glass finish.
Four quick visuals. Start with which material to pick and where ABS works; the engineering detail is at the end if you want it.
Acrylonitrile (chemical resistance) + butadiene (impact toughness) + styrene (rigidity + processability) polymerise into a two-phase amorphous polymer · stiff SAN matrix with dispersed rubber particles that absorb impact energy.
"James handled the 3D printing for a functional heat resistant component we needed in batch production. He helped dial in the prototype first with their design service, then produced the final batch with really consistent results. Super fast 3D print turnaround and great quality across all the 3D printed parts. Will 100% be coming back."
"We needed a sit-in F1-car for an exhibition to showcase our new racing game. 3D Printing Express took our CAD, optimised it for strength and weight as we had no idea how it all worked! Turned out beautifully. They colour matched the finish and was looking like the real deal. On show day the cockpit ran non-stop, adults and kids jumped in. Multiple visitors asked who built it."
"We ordered a batch of 100 PA-12 parts from 3D Printing Express and could not be happier. Every part arrived consistent, dimensionally accurate, and ready for use straight from the box. The PA-12 gave us the strength and stability we needed for functional testing, with minimal post-processing required. Delivery was on time, communication was excellent, and their QC clearly made a difference."
Lower raw tensile than PLA (52.3) or PETG (50.8). ABS's wedge isn't raw strength · it's impact toughness, heat resistance, and ductility (17.9% elongation XY).
25°C higher than PETG, 40°C higher than PLA. Holds a hot car dashboard, sun-warmed enclosure, radiator-adjacent fixture. Engine bay above 110°C is still wrong material.
7× tougher than PETG (2.6) and PLA (3.3) on notched Charpy. The signature ABS property · dispersed polybutadiene rubber particles absorb crack-propagation energy.
It is a workshop hazard, so ventilation is required.
ABS earns its place when impact toughness, heat resistance, and bondability matter · the engineering-grade commodity for dropped-tool environments, acetone-smoothable cosmetic finishes, and solvent-welded assemblies.
ABS's strengths are impact toughness, heat resistance, and bondability · its weaknesses are styrene VOC emissions, chamber printer requirement, UV instability, and acetone / chlorinated-solvent exposure. Pick a different filament if any of these apply.
ABS is the production polymer for automotive interior parts · heat-stable up to dashboard service (~70°C in summer sun), impact-tough enough for repeated handling, paintable in any RAL. Printing prototypes in ABS keeps the chemistry consistent with the production injection-moulded part.
Heat-stable to 100°C handles internal component heat. Solvent-welded seams give clean watertight closure. Acetone-smoothable for production-look cosmetic finish. The default for electronics-enclosure prototypes.
Impact toughness (Charpy 18.0 kJ/m²) survives crashes that snap PLA clean and stress-craze PETG. Lighter than PETG and PLA (1.12 g/cm³ · ~10% lighter than PETG), though carbon-filled nylons are lighter still. The maker-community default for parts that take repeated hits.
Workshop tooling that takes knocks, drops, clamp pressure. ABS combines stiffness (Young's modulus 2247 MPa) with impact toughness and 100°C HDT · the right choice when the fixture lives in a real production environment, not a sterile lab.
A side-by-side of the three commodity thermoplastics most engineers compare when picking ABS. ABS's wedge is impact toughness, heat resistance, and bondability · the engineering-grade commodity. PETG wins for water and ease, PLA for cosmetic precision and cost.
All values from manufacturer Technical Data Sheets V5.4-5.5 EN · injection-moulded ISO test specimens (ISO 527 tensile, ISO 75 HDT, ISO 179 Charpy notched, ISO 1183 density). The charts show ABS's wedge clearly: 7× Charpy and 25-40°C HDT advantage over the commodity peers, with the lowest density of the three.
| Property | ABS (here) | PETG | PLA |
|---|---|---|---|
| Tensile strength XY | 33.4 MPa | 50.8 MPa | 52.3 MPa |
| Stiffness (Young's modulus XY) | 2247 MPa | 2117 MPa | 3427 MPa |
| Charpy notched impact | 18.0 kJ/m² | 2.6 kJ/m² | 3.3 kJ/m² |
| Elongation at break XY | 17.9% | 8.4% | 6.3% |
| Heat deflection (HDT 0.45) | 100°C | 78°C | 60°C |
| Glass transition (Tg) | 101°C | 81°C | 61°C |
| Density (lower = lighter) | 1.12 g/cm³ | 1.25 g/cm³ | 1.17 g/cm³ |
| Acetone smoothing | Yes · vapour or brush | No | No |
| Solvent welding (acetone) | Excellent · fuses ABS-to-ABS | Limited | Limited |
| Chamber printer required | Yes · 40-50°C ambient | No | No |
| VOC during print | Higher (styrene) · ventilation required | Lower | Lowest |
| Outdoor / UV (years) | 6-12 months uncoated | 6-12 months uncoated | Months only |
| Cost per kg (filament) | £30-45 | £25-40 | £20-35 |
| Best for | Impact-loaded, heat-stable, acetone-smoothable, solvent-welded assemblies | Water-contact, food-adjacent, signage | Visual prototypes, props, indoor cosmetic |
Slicer (the software that turns a 3D model into printer instructions) profile and orientation are tuned per part at quote stage.
File or sketch in. Tell us colour, finish, impact / heat / smoothing requirements.
Reviewed inside 24 hours · per-unit cost + colour confirmation.
Wall thickness, warp-prone geometry, chamber orientation, support strategy flagged before print.
Filament dried at 70°C for 6h · enclosed chamber printer with 40-50°C ambient · extraction ventilation for styrene VOCs.
Sand to spec · acetone vapour-smoothing on request (24h cycle) · 2K spray paint for RAL match.
Tracked UK courier, tracking number sent the moment it leaves.
Lead times start when CAD is signed off and colour is confirmed · CAD round-trips on rev requests can extend the clock. Custom RAL colour matching can add 1-2 days for filament procurement. Acetone smoothing adds 24h cure cycle.
It is the ABS-specific combination no other commodity FDM (fused deposition modelling) filament can match. The ABS-specific combination that no other commodity FDM filament can match.
ABS is acrylonitrile butadiene styrene · an amorphous styrenic terpolymer that has been in engineering service since the 1950s. Three monomers polymerise together: acrylonitrile (chemical and heat resistance, ~20-30%), butadiene (impact toughness via dispersed rubber particles, ~5-30%), and styrene (rigidity and processability, ~40-60%). The result is a two-phase polymer combining stiffness with real impact toughness · Charpy notched 18.0 kJ/m² (ISO 179, V5.5 TDS), 7× higher than PETG. Tensile strength 33.4 MPa XY (ISO 527), HDT 100°C at 0.45 MPa (ISO 75), Young's modulus 2247 MPa. Density 1.12 g/cm³ · lighter than PETG (1.25) and PLA (1.17), though carbon-filled nylons (PA12-CF ~1.06) are lighter still. Acetone-smoothable, solvent-weldable. Requires enclosed-chamber printing and ventilation.
"ABS is the engineering-commodity for parts that need to take hits and hold heat · drone frames, electronics housings, automotive interior trim, workshop fixtures. The classic LEGO-brick chemistry is here for a reason · 75 years of production proves out impact toughness and dimensional stability in a way PLA and PETG don't match. The honest tradeoff is the printer · ABS needs an enclosed chamber and ventilation. We have both, and we run ABS through them on every job. If your printer is open-air, choose PETG instead."
Three questions worth answering before specifying ABS · how the three monomers produce a two-phase polymer, what the chamber requirement actually means, and where the 100°C HDT ceiling really matters.
Cold or open-bed prints delaminate, and the z-axis (the vertical build direction) becomes the weak point. This is the molecular reason ABS has 18.0 kJ/m² Charpy notched impact (7× PETG and PLA) · realised only when printed hot in a closed chamber; cold/open-bed ABS delaminates and the Z-axis is the weak point.
...producing layer delamination (layers splitting apart) and bed lift. We print every ABS job in a chamber printer; open-bed ABS is the most common reason for failed DIY ABS prints.
ABS Tg 101°C is 20°C higher than PETG and 40°C higher than PLA. HDT 98°C at 1.8 MPa is the structural ceiling. The amorphous styrenic backbone holds the part rigid right up to that envelope · which is why ABS works in car dashboards and electronics enclosures where PETG and PLA soften.
ABS is acrylonitrile butadiene styrene · a styrenic terpolymer combining three different monomers in one polymer system. The monomers polymerise in an emulsion or mass-polymerisation process where two phases form: a continuous styrene-acrylonitrile (SAN) copolymer matrix, and discrete polybutadiene rubber particles dispersed through it. Acrylonitrile (≈20-30% · the polar nitrile group `-C≡N` adds chemical and heat resistance), butadiene (≈5-30% · the rubber particles), and styrene (≈40-60% · the aromatic-ring backbone that provides rigidity and processability).
That is why Charpy notched impact reaches 18.0 kJ/m² (per TDS V5.5) — seven times higher than PETG (2.6) and PLA (3.3). This is why Charpy notched impact is 18.0 kJ/m² (per TDS V5.5) · 7× higher than PETG's 2.6 and PLA's 3.3. The chemistry is mature · LEGO has been moulding ABS bricks since the 1960s, automotive interiors since the 1970s. 75 years of production proves out the toughness story.
ABS prints at 245-265°C and contracts significantly as it cools. With open-air cooling, the bottom of the part (which has cooled and stabilised) tries to maintain its dimensions while the top (still hot) wants to shrink as it cools. The result is internal stress that pulls the part off the bed (corner lift, warping) or splits layer junctions (delamination). PETG and PLA cool more uniformly and don't have this problem.
The fix is straightforward · an enclosed chamber holding 40-50°C ambient temperature for small parts and 70°C+ for large parts. The slow, equalised cooling prevents the thermal gradient that drives warping. We print every ABS job in a chamber printer. ABS specifically requires enclosed-chamber printing per the manufacturer's printing guide. A DIY maker with an open-bed printer should choose PETG instead · ABS without a chamber is the most common DIY-failure mode in 3D printing.
...the highest of the three commodity FDM (fused deposition modelling) filaments... Below Tg the polymer chains are locked in the amorphous SAN matrix and the dispersed rubber particles, holding the part rigid. Above Tg the chains gain mobility · stiffness collapses and any residual stress relaxes. Heat deflection temperature (HDT) at 0.45 MPa load is 100°C, dropping to 98°C at 1.8 MPa load. Vicat softening at 104°C.
For sustained service the practical ceiling is ~90-95°C. An ABS part in a hot car dashboard (~70°C in summer sun) holds its shape comfortably; an oven-adjacent fixture or engine-bay part above 110°C creeps. For 130°C+ engineering service specify PC or PC-ABS (HDT 130°C class) or PA12-CF (HDT 130°C+ class). For repeated steam autoclave at 121°C specify PEEK or PPSU.
Values measured to the ISO standards cited in the right-hand column, on the manufacturer's own injection-moulded test specimens · directly comparable to other engineering thermoplastics.
| Property | XY · print plane | Z · build axis | Unit | Standard |
|---|---|---|---|---|
| Mechanical | ||||
| Tensile strength | 33.4 | 29.7 | MPa | ISO 527 |
| Young's modulus | 2247 | 2081 | MPa | ISO 527 |
| Elongation at break | 17.9 | 3.1 | % | ISO 527 |
| Flexural strength (XY) | 56.2 | MPa | ISO 178 | |
| Flexural modulus (XY) | 2127 | MPa | ISO 178 | |
| Charpy impact (notched, XY) | 18.0 | kJ/m² | ISO 179 | |
| Thermal | ||||
| Heat deflection (HDT @ 0.45 MPa) | 100 | °C | ISO 75 | |
| Heat deflection (HDT @ 1.8 MPa) | 98 | °C | ISO 75 | |
| Glass transition temperature (Tg) | 101 | °C | DSC, 10°C/min | |
| Vicat softening temperature | 104 | °C | ISO 306 | |
| Decomposition temperature | >380 | °C | TGA, 20°C/min | |
| Physical | ||||
| Density | 1.12 | g/cm³ @ 23°C | ISO 1183 · PolyLite ABS TDS V5.4 | |
| Melt index | 9-14 | g/10min | 220°C, 2.16kg | |
| Equilibrium water absorption | 0.35 | % | manufacturer test | |
| Tensile anisotropy ratio | 1.12× | XY/Z | derived from ISO 527 | |
| Chemical resistance · manufacturer-rated | ||||
| Weak acids | Good | · | manufacturer TDS | |
| Strong acids | Poor | · | manufacturer TDS | |
| Weak alkalis | Good | · | manufacturer TDS | |
| Strong alkalis | Fair | · | manufacturer TDS | |
| Oils and grease | Good | · | manufacturer TDS | |
| Process · supply | ||||
| Print temperature range | 245-265 | °C | manufacturer printing guide | |
| Bed temperature | 90-100 | °C | manufacturer printing guide | |
| Chamber required | Yes · 40-50°C ambient (small parts) | · | manufacturer printing guide | |
| Pre-print drying | 70°C for 6 hours | · | manufacturer printing guide | |
| Acetone smoothable | Yes · vapour or brush | · | styrenic chemistry | |
| Stock colour range | 15+ colours | · | workshop stock | |
| Custom RAL match | Yes (1-2 day procurement) | · | on request | |
ABS prints almost the same strength in every direction — anisotropy ratio 1.12× (33.4 MPa flat vs 29.7 MPa standing). PLA is 1.29× and PETG 1.19×, so ABS is the most consistent of the commodity filaments. Still favour XY-direction load paths for highest tensile, but Z-axis features are more forgiving than other commodity filaments.
ABS's high elongation (17.9%) and Charpy notched (18.0 kJ/m²) mean thin walls handle impact better than PLA or PETG, but layer-line geometry still dominates. The values shown follow the Hubs / Protolabs Network FDM minimums (0.8 mm supported, 2.0 mm minimum feature) · we DFM-check the wall thickness against your part's load case at quote stage.
45° is the slicer-default support threshold across every major FDM tool (Hubs / Protolabs Network) · ABS's chamber-print environment means cooling is slower than PLA or PETG, so steep overhangs sag more without aggressive support. We DFM-check overhangs at quote stage and recommend orientation.
ABS contracts ~0.5% from print temperature to room temperature · chamber printing makes that contraction uniform and predictable. Exact tolerance depends on part size, geometry, and calibration · we confirm achievable tolerance against your CAD at quote stage.
Removes 0.1-0.3 mm per surface · pre-paint prep or stand-alone hand-feel polish.
Acetone dissolves the styrene component at the surface, fusing layer lines into a continuous glass-smooth glossy finish. Works on no other commodity FDM filament. We use a vapour-chamber cycle (cleaner finish than brush). Workshop hazard · ventilation required. Adds ~24h post-process time.
ABS takes paint cleanly with adhesion-promoting primer. Adds 0.05-0.15 mm per surface · sand to 800 grit, primer + topcoat. Either route to RAL match: acetone-smooth-then-paint (cleanest surface for paint), or skip smoothing and rely on sanding.
A drop of acetone applied at the seam dissolves both ABS surfaces; the polymer chains intermingle as the solvent evaporates, fusing the halves into a single continuous mass. Stronger than 2-part epoxy, faster than mechanical fasteners. The standard joint for splitting parts that won't fit on a single bed.
Every value on this page traces to an ISO test method — the manufacturer's V5.5 EN Technical Data Sheet (TDS). We don't quote derived numbers without naming the standard.
No offshore subcontracting. Files, prints, and couriers all stay in the UK · and we run every ABS job in an enclosed-chamber printer with extraction ventilation to handle styrene VOCs.
Send three things: where the part lives (heat, impact, hits expected), what it does (functional / load-bearing / cosmetic), and finish (acetone-smoothed, painted, as-printed). our team come back inside 24 hours · if PETG, PLA, ASA, or another material fits better, we say so.
our team review every brief before quote. No ticket queue, no account managers.
According to the PolyLite ABS TDS, ABS delivers tensile XY 33.4 ± 0.6 MPa per ISO 527 with notched Charpy 18.0 ± 0.9 kJ/m² and Tg 101 °C · fully amorphous, no crystalline melt.
ABS is acrylonitrile butadiene styrene · an amorphous styrenic terpolymer. Three monomers polymerise together: acrylonitrile (≈20-30% · adds chemical and heat resistance), butadiene (≈5-30% · adds impact toughness via dispersed rubber particles), and styrene (≈40-60% · adds rigidity and processability). The result is a two-phase polymer (SAN matrix with polybutadiene rubber particles) that combines stiffness with real impact toughness · Charpy notched 18.0 kJ/m² per TDS V5.5, 7× higher than PETG.
ABS is meaningfully tougher than both. Charpy notched impact: ABS 18.0 kJ/m² vs PETG 2.6 vs PLA 3.3 (per TDS V5.5 for all three). Elongation at break XY: ABS 17.9% vs PETG 8.4% vs PLA 6.3%. The reason is butadiene · dispersed polybutadiene rubber particles in the styrene-acrylonitrile matrix absorb impact energy by deflecting cracks. ABS dents and yields under impact where PETG yields-then-breaks and PLA snaps clean.
ABS emits styrene and other VOCs at print temperature (245-265°C). Higher VOC than PLA or PETG. We print ABS in an enclosed chamber with extraction ventilation · this is the workshop reason chamber printers exist. The low-VOC formulation we stock has noticeably less ultrafine-particle release than traditional ABS resin (the manufacturer's specialty bulk-polymerised grade), but ventilation is still required for production printing. For a hobbyist printer in a flat without ventilation, PETG or PLA is the safer choice.
Tg sits at 101°C · the highest of the commodity FDM trio (PLA 61°C, PETG 81°C). HDT is 100°C at 0.45 MPa and 98°C at 1.8 MPa per TDS V5.5. Vicat softening 104°C. An ABS part in a hot car dashboard (~70°C in summer) holds its shape comfortably. Engine-bay parts above 110°C creep · for that switch to PC, PC-ABS, or PA12-CF (HDT 130°C+ class).
Yes · this is ABS's signature post-process. The styrene component dissolves in acetone, fusing the layer lines into a glass-smooth surface. Two routes: vapour smoothing (closed chamber with acetone-saturated atmosphere · cleanest finish) or brush application (faster, less uniform). Both require ventilation · acetone is a workshop hazard. We offer vapour smoothing on request. Note: acetone smoothing softens the entire surface slightly · holds rounded geometries better than sharp edges, and slightly increases dimensions (+0.05 mm typical).
Limited. ABS yellows and chalks under sustained UV exposure · the butadiene component oxidises. 6 to 12 months UK outdoor service uncoated, surface degradation accelerates after that. For sustained outdoor service specify ASA (acrylonitrile styrene acrylate · the UV-resistant cousin of ABS, prints nearly identically, replaces butadiene with acrylate ester for UV stability).
ABS prints at 245-265°C and cools as each layer extrudes. With open-air cooling the bottom of the part contracts while the top is still hot · warping, lifting from the bed, layer delamination. An enclosed chamber holds ambient temperature at 40-50°C for small parts and 70+ for large parts, slowing cooling and equalising the thermal gradient. ABS specifically requires enclosed-chamber printing per the manufacturer's printing guide. This is the main "higher difficulty" tradeoff vs PETG and PLA.
From the manufacturer's Technical Data Sheet (TDS): ABS rates GOOD against weak acids, weak alkalis, and oils/grease. ABS dissolves in acetone, MEK, and chlorinated solvents (which is what enables vapour smoothing). For sustained chemical-service parts use PA12 or PP.
| Chemical / family | Resistance | Notes |
|---|---|---|
| Weak acids (acetic, citric, dilute organic) | Good | Manufacturer TDS rating |
| Strong acids (sulphuric, HCl, nitric) | Poor | Manufacturer TDS rating · polymer chain breakdown |
| Weak alkalis (dilute soap, mild bleach) | Good | Manufacturer TDS rating · short-cycle wash-down |
| Strong alkalis (caustic soda, ammonia) | Fair | Manufacturer TDS rating · short-term only |
| Oils and grease | Good | Manufacturer TDS rating · sustained contact OK |
| Cold water | Excellent | Low water absorption (0.35% equilibrium) |
| Hot water (sustained > 80°C) | Limited | Approaches HDT · creep over months |
| Steam autoclave (121°C) | Fails | Above HDT · parts deform · choose PEEK / PPSU |
| Detergents, soap (mild) | Good | Dishwasher OK below 80°C |
| Alcohols (IPA, ethanol) | Good | Surface cleaning, brief contact safe |
| Acetone, MEK (ketones) | Dissolves | This is what enables acetone smoothing · solvent welding |
| Toluene, xylene (aromatic hydrocarbons) | Dissolves | Strong attack |
| Petrol, diesel (brief) | Limited | Brief contact OK · sustained attacks the polymer |
| Chlorinated solvents (DCM, chloroform) | Dissolves | Industrial solvents |
| UV exposure (UK outdoor) | Limited | 6-12 months uncoated · butadiene oxidises · choose ASA for multi-year |
| Outdoor sheltered | Good | Indoor / weather-protected service OK |
| Food contact | No | Styrene migration concern · use PETG with food-safe overcoat for food-adjacent |
First five rows are direct manufacturer TDS ratings. Remaining rows reflect industry-typical ABS behaviour and 3DPE workshop experience. For sustained chemical service beyond water and oils, switch material to PA12 or PP depending on the exposure.
Different tools. ABS wins on: heat (HDT 100°C vs PETG 75°C), impact (Charpy 18.0 vs 2.6 kJ/m² · 7× tougher), acetone-smoothability, lower density (1.12 vs 1.25 g/cm³ · ~10% lighter parts). PETG wins on: ease of print (no chamber needed, low VOC), water and food-adjacent service, moderate UV. If the part sees impact loads or sustained heat above 60°C, choose ABS. If it sees water, mild outdoor, or food-adjacent service, choose PETG.
Same mechanical performance, different outdoor story. ASA (acrylonitrile styrene acrylate) replaces ABS's butadiene with acrylate ester · the UV-stable variant of the same family. Mechanical and thermal properties are nearly identical (ASA tensile ~38-40 MPa, HDT ~95-100°C, Charpy ~10-15 kJ/m²). For indoor or short-outdoor (months) service ABS is fine. For sustained multi-year outdoor service (years), ASA is the correct specification. ASA is slightly more expensive.
Yes · ABS is the most-bondable commodity FDM filament. Solvent welding works exceptionally well (acetone fuses ABS-to-ABS into a single mass). 2-part epoxy, cyanoacrylate, polyurethane adhesives all work cleanly. Mechanical fasteners with heat-set inserts (265°C iron temp per CNC Kitchen) for assemblies. Ultrasonic welding works well. For multi-part assemblies in ABS, solvent welding gives the strongest joint.
Filament cost is roughly £30-45/kg for stock-colour ABS · slightly above PETG (£25-40/kg) and PLA (£20-35/kg), well below PA12-CF (£90-130/kg). The total quote depends on print time + post-processing more than filament cost · chamber-printer time runs slower than open-bed PETG / PLA so unit cost is typically 15-25% higher than equivalent PETG. Acetone smoothing adds 2-4h of post-process per batch.
You'll hear back from our team within 24 hours — with a material-fit check, colour confirmation, an acetone-smoothing recommendation if relevant and a lead time on every quote.