A material choice can determine whether a prototype clips together correctly, survives a warm enclosure, or arrives with an unsuitable surface finish. This 3D printing materials chart is designed to help you compare the practical trade-offs before a part enters production. It is not a substitute for matching the material to the printing technology, geometry, tolerance, and post-processing requirements of the job.
For most custom orders, the right question is not which material is best. It is which material best supports the part's intended use, expected load, appearance, lead-time requirements, and budget. A cosmetic concept model and a functional bracket may share the same geometry while needing completely different material specifications.
3D Printing Materials Chart: Core Comparisons
The chart below groups commonly requested material families by their most useful production characteristics. Ratings are relative. Actual performance depends on grade, printer technology, build orientation, wall thickness, infill or internal structure, and finishing method.
| Material family | Strength and stiffness | Heat resistance | Surface finish | Typical use | Key consideration | |---|---|---|---|---|---| | PLA | Moderate strength, fairly stiff | Low | Good detail, visible layer lines possible | Concept models, display parts, educational projects | Can soften in heat and may be brittle under impact | | PETG | Good strength, moderate flexibility | Moderate | Functional finish, may show stringing | Enclosures, fixtures, general-purpose parts | Less rigid than PLA; geometry and finishing affect appearance | | ABS | Good toughness | Moderate to good | Can be smoothed with suitable post-processing | Housings, functional prototypes | Requires controlled printing conditions to reduce warping | | ASA | Good toughness | Good | Similar to ABS | Outdoor-facing components, covers, brackets | Better UV stability than ABS, but still needs process control | | Nylon | High toughness, flexible | Good | Functional, often matte | Clips, gears, wear-resistant parts | Moisture absorption can affect dimensions and performance | | TPU | Flexible and impact resistant | Moderate | Soft, textured finish | Gaskets, grips, protective components | Shore hardness and geometry strongly affect flexibility | | Resin | Varies by formulation | Varies by formulation | Fine detail and smooth surfaces | Detailed models, dental, casting patterns, prototypes | Standard resin can be brittle; choose engineering grades for function | | SLS nylon | High strength and toughness | Good | Fine matte, lightly textured | Functional parts, assemblies, low-volume production | Powder-based finish may need smoothing or dyeing for cosmetics | | Metal | High strength and heat resistance | High | Usually requires machining or finishing | Tooling, end-use components, heat-critical parts | Cost, tolerances, and finishing requirements need early review |
This chart provides a starting point for specification, not a universal ranking. For example, nylon is often more durable than PLA in impact-prone use, but its flexibility may be a disadvantage for a rigid alignment fixture. Resin can provide sharper detail than filament-based materials, but a standard resin part may not be appropriate for a repeatedly loaded hinge.
Start With the Part's Job
Material selection becomes easier when the part is defined by function rather than material name. Identify whether the component is a visual model, fit-check prototype, assembly aid, production fixture, replacement part, or end-use component. Then record the conditions it will face: load direction, repeated movement, impacts, heat, moisture, sunlight, chemicals, and contact with other components.
A desk-mounted prototype enclosure may only need dimensional stability and a clean appearance. PLA, PETG, or a suitable resin may be appropriate depending on detail and finishing expectations. A vehicle-mounted cover, however, may need UV resistance and greater heat tolerance. ASA is often a stronger candidate in that situation than PLA, even if the two materials look similar in a digital render.
For functional components, load is rarely a simple pass-fail category. A part can be strong in one direction and weaker across printed layers. Build orientation, wall count, internal structure, and corner radii can change real-world performance significantly. If a tab, boss, or threaded feature will be loaded repeatedly, include that information with the order specification instead of relying on material selection alone.
Compare Properties That Affect Production
Strength, stiffness, and impact resistance
Strength describes how much load a material can carry before failure. Stiffness describes how much it bends under that load. Impact resistance describes how well it handles a sudden strike. These properties should not be treated as interchangeable.
A rigid part is not automatically a durable part. PLA can be stiff and dimensionally useful for prototypes, while nylon may bend before it breaks. TPU is deliberately flexible and is better suited to protective or sealing applications than to structural brackets. When a part must snap, flex, or absorb shock, toughness and elongation may matter more than stiffness.
Heat, weather, and chemical exposure
Heat resistance should be assessed against the actual environment, not room temperature. A part that performs well on a workbench may deform in a parked vehicle, near a motor, or inside an electronics enclosure. ABS, ASA, nylon, engineering resins, and metals can provide better heat performance than PLA, but the required temperature range should be documented.
Outdoor use introduces another variable: ultraviolet exposure. ASA is commonly selected where long-term weather resistance is required. For chemical contact, the specific fluid, concentration, temperature, and duration matter. General-purpose material labels cannot replace application-specific review.
Accuracy, finish, and visible surfaces
A material can be mechanically suitable and still be the wrong choice for a client-facing part. Layer lines, powder texture, support marks, and colour consistency vary by technology and post-processing method. Resin printing can produce fine features and smooth detail. SLS nylon supports complex functional geometry without conventional support structures, but its natural surface is typically matte and lightly textured.
If a surface is visible, specify the required finish early. State whether the part is acceptable as printed, needs sanding or coating, requires a colour match, or has a cosmetic face that must be oriented away from supports. This prevents a functional manufacturing process from being judged against an unstated presentation requirement.
Match the Material to the Printing Technology
The same material family can behave differently across technologies. Nylon made by selective laser sintering has different surface characteristics, design freedoms, and production economics than nylon extruded through an FDM process. Resin options also range from standard photopolymers intended for visual models to formulations designed for higher temperature, toughness, or flexibility.
Technology affects minimum wall thickness, unsupported spans, tolerances, hollowing requirements, and how nested or assembled parts can be produced. It also affects cost. A complex geometry may be economical in a powder-bed process because it needs no dedicated supports, while a straightforward housing may be more efficiently produced with FDM.
For this reason, a material request should include the required properties, not just a preferred material name. A useful specification might state: “black, UV-resistant exterior cover; moderate mechanical load; visible front surface; suitable for outdoor Canadian seasonal exposure.” That gives the production team enough context to confirm the material, technology, and finish combination.
Specify Colour and Post-Processing Separately
Colour availability is not identical across all materials or technologies. Some processes offer broad stock colour choices, while others produce a natural base colour that can be dyed, painted, coated, or finished after printing. A black part in one material may have a satin surface, while black in another may appear matte, textured, or slightly translucent.
Post-processing can change both appearance and function. Sanding, vapour smoothing, dyeing, painting, machining, threaded inserts, and coating can improve a part for its intended application. They also affect price, production time, and tolerances. Critical mating surfaces should be identified before post-processing is selected, especially where coating thickness or smoothing may alter fit.
Use the Chart to Build a Clear Order
A materials chart is most useful when it leads to a complete production request. Before submitting a file, confirm the material family, required colour, quantity, intended use, visible surfaces, post-processing needs, and any requirements for certification or documentation. For repeat orders, record the approved configuration so that future parts are produced against the same baseline.
Print3Dcanada's structured ordering workflow helps keep these details tied to the job, from material and colour selection through production status, invoicing, and fulfilment. That level of control is particularly useful when designers, purchasing teams, and end users all need visibility into the same component order.
When two materials appear equally suitable, choose based on the risk you are trying to avoid. Select the option with better heat tolerance when the environment is uncertain, better toughness when drops or flexing are likely, or a more controlled finish when the part will be reviewed by customers. A clear application note at the ordering stage is often more valuable than choosing the most expensive material on the chart.