The Complete Guide to 3D Printing Materials for Engineering Applications

Choosing the right material is the single most important decision in any professional 3D printing project. The material determines how your part performs under load, how it handles heat and chemicals, whether it’s suitable for its intended environment, and ultimately whether your prototype gives you results you can trust.

This guide covers every engineering-grade material we print with at Pro 3D Print from general-purpose ABS through to high-performance ULTEM and PEKK. For each material, we explain what it is, what it’s good at, where it falls short, and the applications where it makes the most sense. If you’re a design engineer, product developer, or procurement manager trying to decide which material to specify, this is the reference you need.

The materials available for professional FDM 3D printing fall into three broad categories, each suited to different levels of performance:

• Standard Plastics — ABS-M30, ASA. Good all-round mechanical properties. Suitable for concept models, general prototyping, and functional parts that don’t face extreme conditions.
• Engineering Plastics — Polycarbonate, PC-ABS, Nylon 12, Nylon 12 Carbon Fibre, ABS-M30i, ABS-ESD7, TPU 92A. Higher-performance materials for demanding applications: medical, electronics, automotive, and functional testing.
• High-Performance Plastics — ULTEM 9085, ULTEM 1010, Antero 800NA (PEKK). The top tier. Certified for aerospace, high-temperature, and chemically aggressive environments.

All of these are real thermoplastics — the same polymer families used in injection moulding. That’s a critical distinction from resin-based (SLA) or powder-based (SLS) alternatives, and it’s what makes FDM the go-to method for engineering validation.

ABS-M30

The workhorse. ABS-M30 is Stratasys’s enhanced version of standard ABS, offering 25–75% greater tensile, impact, and flexural strength. It’s the default starting point for most prototyping projects and suits a wide range of applications.

• Key properties: Good tensile strength (36 MPa), moderate heat resistance (96°C HDT), available in multiple colours including translucent options.
• Best for: Concept models, fit-and-form checks, general functional prototyping, jigs and fixtures, and any application where you need a reliable, well-understood material.
• Limitations: Not suitable for prolonged UV exposure, high-temperature environments, or chemically aggressive applications.

ASA

ASA is the UV-resistant alternative to ABS. If your prototype needs to be tested outdoors or in environments with UV exposure, ASA holds its colour and mechanical properties far better than standard ABS.

• Key properties: UV stability, good weatherability, similar mechanical performance to ABS-M30. Available in multiple colours.
• Best for: Outdoor prototypes, automotive exterior parts, signage, and any application involving prolonged sunlight exposure.
• Limitations: Slightly lower impact strength than ABS-M30.

Polycarbonate (PC)

Polycarbonate is one of the most widely used engineering thermoplastics in manufacturing, and that translates directly to 3D printing. It delivers high strength, heat resistance, and dimensional stability — making it a genuine step up from ABS for demanding applications.

• Key properties: Tensile strength up to 68 MPa, heat deflection temperature of 138°C, excellent impact resistance.
• Best for: Functional prototyping where strength matters, tooling, production parts, automotive under-bonnet components, and any application where ABS doesn’t quite cut it.
• Limitations: More prone to moisture absorption than ABS. Requires careful print orientation for optimal mechanical properties.

PC-ABS

PC-ABS blends the best characteristics of both materials: the heat resistance and stiffness of polycarbonate with the impact strength and processability of ABS. The result is one of the most versatile engineering materials in the FDM range.

• Key properties: High impact strength, good heat resistance, excellent surface finish. Available in multiple colours.
• Best for: Functional prototypes, automotive components, consumer electronics housings, production parts that need both toughness and heat performance.
• Limitations: Not UV-stable for outdoor use. Not biocompatible.

Nylon 12

Nylon 12 is a tough, fatigue-resistant material that brings genuine flexibility to the FDM material range. It’s the go-to choice for parts that need to flex, snap, or absorb repeated impacts without breaking.

• Key properties: Excellent fatigue resistance, high elongation at break (30%), good chemical resistance, low friction coefficient.
• Best for: Snap-fit features, clips, living hinges, cable management parts, and any application where the part needs to flex repeatedly without failing.
• Limitations: Absorbs moisture, which can affect dimensional stability. Lower stiffness than PC or ABS.

Nylon 12 Carbon Fibre

Nylon 12 Carbon Fibre reinforces the nylon base with chopped carbon fibre, dramatically increasing stiffness and strength-to-weight ratio. It’s the material of choice when you need lightweight rigidity.

• Key properties: Highest stiffness-to-weight ratio in the FDM range, excellent dimensional stability, low thermal expansion.
• Best for: Lightweight tooling, end-of-arm robotic tools, drone components, automotive fixtures, and any application where weight reduction matters.
• Limitations: More brittle than standard Nylon 12. Not suitable for parts that need to flex.

ABS-M30i (Biocompatible)

ABS-M30i is a biocompatible variant of ABS that’s been tested and certified to ISO 10993 and USP Class VI standards. It’s designed specifically for medical, pharmaceutical, and food-contact applications where material safety is non-negotiable.

• Key properties: Biocompatibility certification (ISO 10993, USP Class VI), gamma and EtO sterilisable, good mechanical properties similar to standard ABS-M30.
• Best for: Medical device prototyping, surgical guides, pharmaceutical tooling, food-handling equipment, and any application requiring biocompatibility certification.
• Limitations: Available in natural (ivory) colour only. Not autoclavable.

ABS-ESD7 (Static Dissipative)

ABS-ESD7 is formulated with static-dissipative properties, making it essential for electronics manufacturing and handling environments where electrostatic discharge can damage sensitive components.

• Key properties: Surface resistivity of 10⁹ to 10¹² ohms, prevents static charge build-up, good general mechanical properties.
• Best for: Electronic component trays, circuit board holders, ESD-safe enclosures, and manufacturing jigs for electronics assembly lines.
• Limitations: Available in dark grey only. Slightly lower impact strength than standard ABS-M30.

TPU 92A (Flexible Elastomer)

TPU 92A is a flexible, rubber-like thermoplastic elastomer. It fills the gap in the FDM material range for parts that need to deform, compress, or absorb energy.

• Key properties: Shore A hardness of 92, high elongation at break (580%), excellent energy return and vibration dampening.
• Best for: Seals, gaskets, grips, vibration isolators, flexible boots, and any application requiring rubber-like properties. Can produce large, complex elastomer parts that would be difficult to mould conventionally.
• Limitations: Lower dimensional accuracy than rigid materials. Not suitable for structural load-bearing applications.

ULTEM 9085

ULTEM 9085 is a polyetherimide (PEI) thermoplastic that’s widely used in aerospace and commercial transportation. Its FST (flame, smoke, toxicity) certification makes it one of the few 3D printing materials approved for use in aircraft cabin interiors.

• Key properties: FST certified, high strength-to-weight ratio, chemical resistance, heat deflection temperature of 153°C. Available in tan and black.
• Best for: Aerospace components, aircraft interior parts, rail and bus components, high-temperature ducting, and any application requiring FST compliance.
• Limitations: Higher material cost. Limited colour range. Requires advanced FDM platforms (Fortus 450mc / F900).

ULTEM 1010

ULTEM 1010 is the strongest and most heat-resistant material in the entire FDM range. It offers the highest tensile strength, heat deflection temperature, and chemical resistance of any printable thermoplastic.

• Key properties: Tensile strength of 81 MPa, HDT of 213°C, biocompatible (USP Class VI, ISO 10993), sterilisable by autoclave, gamma, and EtO.
• Best for: Autoclave-sterilisable medical tools, high-temperature tooling, composite layup tooling, food-contact applications, and extreme-environment industrial parts.
• Limitations: The most expensive material in the range. Natural colour only. Requires advanced FDM platforms.

Antero 800NA (PEKK)

Antero 800NA is based on PEKK (polyetherketoneketone), a member of the PAEK family of ultra-high-performance polymers. It brings chemical resistance and mechanical performance that sits alongside ULTEM but with better resistance to hydrocarbons and aviation fluids.

• Key properties: Exceptional chemical resistance (including jet fuel and hydraulic fluid), high strength, low outgassing, excellent dimensional stability.
• Best for: Aerospace applications requiring chemical resistance, oil and gas tooling, satellite components (low outgassing), and chemically aggressive industrial environments.
• Limitations: Highest material cost in the range. Requires the most advanced FDM platforms.

The following table summarises the key properties across all materials. Use this as a quick reference when comparing options for your project:

Material	Tensile (MPa)	HDT (°C)	Key Property	Category	Colour Options
ABS-M30	36	96	General purpose	Standard	10+ colours
ASA	33	98	UV resistant	Standard	Multiple
PC	68	138	High strength	Engineering	White, black
PC-ABS	41	110	Impact + heat	Engineering	Multiple
Nylon 12	36	96	Fatigue resistant	Engineering	Black, natural
Nylon 12 CF	76	143	Stiff + light	Engineering	Black
ABS-M30i	36	96	Biocompatible	Engineering	Natural only
ABS-ESD7	36	96	ESD safe	Engineering	Dark grey
TPU 92A	26	N/A	Flexible / rubber	Engineering	White, black
ULTEM 9085	69	153	FST certified	High-perf	Tan, black
ULTEM 1010	81	213	Strongest + hottest	High-perf	Natural only
Antero 800NA	93	147	Chemical resistant	High-perf	Natural

Material selection should always start with the application, not the material. Ask yourself these questions:

• What will the part do? Is it a visual model, a functional prototype, or a production part? If it’s purely visual, ABS-M30 is fine. If it needs to perform under load, look at PC, Nylon, or the ULTEM range.
• What environment will it operate in? High temperature? UV exposure? Chemical contact? The environment narrows the options quickly. ASA for UV, ULTEM for heat, Antero for chemicals.
• Are there compliance requirements? Medical (biocompatibility), aerospace (FST), or electronics (ESD) applications all point to specific certified materials.
• Does the part need to flex? Nylon 12 for moderate flex and snap fits, TPU 92A for rubber-like flexibility.
• Is weight a factor? Nylon 12 Carbon Fibre gives you the best stiffness-to-weight ratio.

If you’re still not sure, that’s normal. Material selection is one of the areas where our experience as a professional 3D printing service adds the most value. We’ll ask about your application, your testing requirements, and your end-use environment, and recommend the material that gives you the best result.

Use this table to quickly identify which material suits your application:

If you need…	Start with…	Also consider…
General prototyping	ABS-M30	PC-ABS
UV / outdoor resistance	ASA	—
High strength and heat resistance	Polycarbonate	PC-ABS
High impact strength	PC-ABS	Nylon 12
Flexibility and snap fits	Nylon 12	TPU 92A
Lightweight and stiff	Nylon 12 Carbon Fibre	Polycarbonate
Biocompatibility / medical	ABS-M30i	ULTEM 1010
ESD protection / electronics	ABS-ESD7	—
Rubber-like / flexible parts	TPU 92A	—
Aerospace / FST compliance	ULTEM 9085	ULTEM 1010
Maximum heat resistance	ULTEM 1010	Antero 800NA
Chemical resistance	Antero 800NA	ULTEM 1010

Material selection is one of the most important parts of any 3D printing project, and it’s something we help our clients with every day. If you’ve got a project in mind and want advice on the best material for your application, get in touch or send us your CAD files and we’ll come back with a recommendation and quote.

➤ Request a quote | Call us on 0116 262 5737 | Email info@pro3dprint.co.uk

Related reading: What Is Professional 3D Printing? | FDM vs SLA vs SLS Compared

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