Kexcelled

Bambu PEEK Filament – Kexcelled K11

Name: Bambu PEEK Filament – Kexcelled K11
Brand: Kexcelled
Price: 499.0 USD
Availability: InStock

Bambu PEEK Filament – Kexcelled K11

Supports functional engineering parts made from PEEK through a controlled high-temperature printing workflow.

PEEK for Functional Engineering Parts

K11 PEEK is intended for jigs, fixtures, brackets, and housings that require a high-performance engineering polymer. Select applications using the grade-specific property data and the intended service conditions.

Easier PEEK Printing at Lower Chamber Temperatures

Rapid crystallization can cause conventional PEEK to shrink and warp during printing. K11’s slow-crystallizing, low-crystallinity formulation helps reduce this challenge, making PEEK easier to print in a 50–65°C (122–149°F) heated chamber, including the tested Bambu Lab H2D setup.

$499.00

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Bambu PEEK Filament by Kexcelled K11 makes PEEK more accessible for functional engineering parts where heat resistance, chemical resistance, and strength matter. This third-party filament offers a practical route to brackets, housings, jigs, and fixtures, with final performance dependent on processing and application-specific validation.

Conventional PEEK can crystallize rapidly during printing, causing shrinkage, warping, and deformation. K11’s slow-crystallizing, low-crystallinity formulation helps reduce crystallization-driven distortion, enabling easier printing in a 50–65°C (122–149°F) heated chamber. Its formulation addresses crystallization-related printing challenges without removing the need to validate finished parts for their intended use.

Kexcelled K11 has been printed on the Bambu Lab H2D using a 350°C nozzle, 120°C bed, and 65°C chamber. These conditions describe the reported H2D printing setup, rather than a guarantee of results for every printer or part geometry.

When evaluating this filament for an engineering application, consider the print conditions, thermal treatment, and requirements of the finished component. Final performance depends on these factors and application-specific validation.

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Bambu PEEK Filament – Kexcelled K11 Overview

Why Choose PEEK Over Standard Filaments?

Compared with common filaments such as PLA, PETG, and ABS, PEEK is selected for engineering applications that demand a combination of heat resistance, chemical resistance, and mechanical performance.

1. Heat resistance: PEEK offers a higher-temperature material option for parts exposed to conditions that can soften or deform standard printing plastics. Use K11-specific thermal data to assess the actual service temperature.
2. Chemical resistance: PEEK is known for resistance to many oils, fuels, and solvents, making it a candidate for chemically exposed components. Compatibility depends on the chemical, concentration, temperature, and exposure time.
3. Mechanical performance under demanding conditions: PEEK is used for functional components where maintaining strength and stiffness under heat and load matters more than the room-temperature strength of a simple prototype.
4. K11’s printing advantage: Its slow-crystallizing formulation helps reduce crystallization-driven shrinkage and warping during printing, enabling a more accessible 50–65°C (122–149°F) heated-chamber workflow.

PEEK is not a universal upgrade: it requires a higher-temperature printing setup and more process control than standard filaments. Final properties depend on the grade, print orientation, crystallinity, and thermal treatment; validate the finished part for its intended use.

Product Specification

Material & Filament

Brand: Kexcelled
Grade: K11 PEEK
Polymer: PEEK (polyether ether ketone), part of the PAEK family
Process: FDM / FFF 3D printing
Crystallization characteristics: Slow-crystallizing, low-crystallinity grade
Filament diameter: 1.75 ± 0.05 mm
Maximum roundness deviation: 0.05 mm
Net weight: 1 kg per spool

Physical Properties

Density: 1.28 g/cm³ — ISO 1183
Melt flow rate: 15–22 g/10 min — ISO 1133

Thermal Properties

Melting temperature: Approximately 306°C (583°F) — ISO 11357
Heat deflection temperature (HDT): 150°C (302°F) — ISO 75
Vicat softening temperature: 158°C (316°F) — ISO 306

Mechanical Properties

Direction labels below follow the source record: X/Y and Z/X. They have not been reinterpreted as standardized specimen orientations.

Tensile strength, X/Y: 60–62 MPa — ISO 527
Tensile modulus, X/Y: 2400–2600 MPa — ISO 527
Elongation at break, X/Y: 60–70% — ISO 527
Tensile strength, Z/X, cooling fan off: 45–50 MPa — ISO 527
Tensile strength, Z/X, cooling fan on: 34–38 MPa — ISO 527
Flexural modulus: 2500–2700 MPa — ISO 178
Flexural result: 90–100 MPa — ISO 178.
Impact result: 177–185 kJ/m² — ISO 179.
Notched impact result: 57–63 kJ/m² — ISO 179.

Recommended Print Settings

Nozzle temperature: 340–380°C (644–716°F)
Build plate temperature: 100–120°C (212–248°F)
Chamber temperature: 50–65°C (122–149°F)
Print speed: 30–60 mm/s
Layer height: 0.2 mm
Shell thickness: At least 0.8 mm
Build surface: Glue and the specified thickened PEI board
Part cooling fan: 0–100% in the source guidance; adjust and validate for the part and required interlayer strength

Dry the filament before printing. Obtain the exact K11 drying temperature and duration before use; these are not specified in the current record. For a literature-based annealing trial schedule and shrinkage precautions, see the annealing FAQ.

Printer Requirements

The complete setup must meet the nozzle, bed, chamber, and build-surface requirements together.
The documented H2D test used a 350°C nozzle. Do not exceed the printer’s rated temperature limit to reach the upper end of the general material range.
Stock P2S and X2D printers have a 300°C nozzle limit and do not meet the recommended nozzle-temperature range.

Technical Data Notes

Source: KEXCELLED TDS, revision 01, dated 22 July 2026.
This specification reorganizes the existing product record; it is not a newly issued or independently verified manufacturer TDS.

Package Includes

- Kexcelled K11 PEEK Filament × 1 spool
- Net weight: 1 kg
- Diameter: 1.75 mm

Requirements & Installation Notes

The complete setup must meet the nozzle, bed, chamber, and build-surface requirements together.
The documented H2D test used a 350°C nozzle. Do not exceed the printer’s rated temperature limit to reach the upper end of the general material range.
Stock P2S and X2D printers have a 300°C nozzle limit and do not meet the recommended nozzle-temperature range.

Explore Precision Upgrades for Your Bambu Lab

Frequently Asked Questions About Bambu PEEK Filament – Kexcelled K11

Can Bambu Lab X2D or P2S print K11 PEEK?

Not in their stock configurations. Both the P2S and X2D have a maximum nozzle temperature of 300°C (572°F), below K11 PEEK’s recommended 340–380°C (644–716°F) range. An enclosure or chamber heater does not overcome this nozzle-temperature limit. Do not bypass the printer’s temperature limits. By comparison, K11 has been printed on the H2D with a 350°C (662°F) nozzle, 120°C (248°F) bed, and 65°C (149°F) chamber.

How should I anneal or post-crystallize K11 PEEK parts?

Follow the supplier-recommended annealing / post-crystallization schedule for K11 PEEK:

1. Place the printed part in a temperature-controlled, air-circulating oven. Support the part where needed to help limit distortion.
2. Heat slowly to approximately 150°C (302°F) and hold for 1–2 hours for stress relief.
3. Raise the temperature slowly to approximately 200°C (392°F) and hold for 2–4 hours, depending on part size and wall thickness.
4. Cool slowly inside the oven. Allow the temperature to fall below approximately 140°C (284°F) before opening the oven, then allow the part to cool to room temperature.

The two holding stages total 3–6 hours; heating and cooling time are additional. Larger or high-precision parts may require slower heating and cooling and suitable support fixtures.

Annealing can cause shrinkage or warping. Validate the schedule on a representative test part before treating final components, and measure critical dimensions before and after treatment. Final dimensions and properties depend on part geometry, print settings, and thermal history.

If salt-powder embedding is used as an external support method, confirm salt-grade and material compatibility separately. This is not molten-salt immersion, does not eliminate material shrinkage, and is not established here as part of the supplier-confirmed annealing schedule.

Why is slow-crystallizing K11 PEEK easier to print?

K11 PEEK is a slow-crystallizing PEEK grade designed to make high-performance printing more manageable. Rapid crystallization during cooling can cause uneven shrinkage, internal stress, and warping. Slowing this process helps reduce crystallization-driven distortion and gives adjacent printed layers more time to bond before crystallization restricts molecular movement.

For K11, this supports easier printing in a 50–65°C (122–149°F) heated chamber, including the tested Bambu Lab H2D setup. Parts can then be annealed when additional crystallization is needed. Slow crystallization does not eliminate warping or shrinkage; final dimensions and performance still depend on print settings, part geometry, and thermal treatment.

Is K11 PEEK actually PEEK, and what does slow crystallization mean?

Kexcelled K11 PEEK is a PEEK material, not merely a PEEK-class alternative. PEEK belongs to the broader PAEK polymer family. K11 is described as a low-crystallinity, slow-crystallizing PEEK grade: crystallinity is the proportion of crystalline structure, while crystallization rate is how quickly it develops. These are different properties; no numerical crystallinity or crystallization-rate value is specified here. Do not assume every printed or annealed part will have the same crystallinity.

Why Shop with Call3D ?

Buy with confidence from an experienced 3D printing team offering carefully selected products, clear compatibility guidance, responsive support, and transparent order fulfillment.

Support FAQ

What Should I Buy from Call3D?

Call3D is particularly valuable when you are looking for:

Carefully selected third-party accessories, mods, and upgrades for Bambu Lab printers;
Compatibility-sensitive parts that require clearer model, version, or installation guidance;
Specialized solutions that may be difficult to identify on general marketplaces;
Newly released or locally unavailable Bambu Lab products;
Multiple accessories that can be combined into one order.

Every product we list is selected for a clear functional purpose, with compatibility, installation requirements, and known limitations reviewed before publication. Our goal is to help customers choose the right solution—not simply offer the largest possible catalog.

Why Call3D over a Marketplace?

General marketplaces may offer a large number of similar-looking products from different sellers, making it difficult to evaluate compatibility, product quality, and after-sales responsibility.

Call3D operates as a specialist curated store. We review a product’s purpose, compatibility, installation requirements, and available technical information before listing it. If customers need help before ordering or encounter a problem afterward, they can contact the same team that selected and documented the product.

We focus on long-term customer relationships, clear communication, and responsible after-sales support rather than a one-time transaction.

How can I track my order?

You will receive a YunExpress order number immediately after your order ships.Use this number to track the package from our warehouse to your destination country.
For the following countries, you will also receive a corresponding local tracking number.Please use the official website of the local carrier for real-time delivery updates:

United States: USPS
Germany & Netherlands: DHL
United Kingdom: Evri
Spain: CTT
France: Colis Privé

For all other regions: Only a YunExpress tracking number will be provided (no local carrier tracking available).

How long will my order take to arrive?

Call3D normally prepares and hands over orders to the carrier within 48 hours. In September 2026, 51 completed deliveries averaged 4.0 business days in transit from carrier acceptance to delivery.

Recent US deliveries averaged 4.1 business days in transit, while completed deliveries across eight observed EU destinations averaged 4.3 business days. These figures do not include Call3D’s order-preparation time.

These are recent observed averages rather than guaranteed delivery dates. Actual timing may vary depending on the destination, customs processing, holidays, and local carrier operations.

Do you ship to my country?

Call3D currently serves customers in 36 countries and regions:

European Union: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, and Sweden.

Other destinations: Australia, Canada, Israel, New Zealand, Norway, Singapore, Switzerland, the United Kingdom, and the United States.

If your destination is not listed, please contact Call3D before placing an order. We will assess shipping availability, customs requirements, taxes, and applicable local regulations, then confirm whether we can serve your location. Delivery to an unlisted destination is not guaranteed until confirmed by our team.

What is your return policy?

Eligible unused items in their original condition and packaging may be returned within 30 days of delivery. Please contact Call3D for approval before returning an item. Refunds are issued to the original payment method after inspection; return shipping costs apply.⁠⁠

View the Complete Return & Exchange Policy →

Duties, VAT & Sales Tax

Call3D product prices include applicable import duties. For orders delivered to the European Union, applicable VAT is also included in the displayed price. Customers should not normally be required to pay additional import duties or VAT upon delivery.

For orders delivered within the United States, applicable state and local sales tax is calculated based on the shipping address and displayed at checkout before payment. Call3D collects sales tax only in jurisdictions where it is required to do so under applicable tax rules. If no sales tax is shown at checkout, Call3D is not collecting sales tax for that order.

If you receive an unexpected request for import duties or VAT, please contact Call3D Support before making an additional payment.

Call3D Store & Service Reviews

Found this shop on Reddit, chatted with a real person about the P2S filter I needed. Asked if they could ship to SG, they checked and made it happen! Super happy because this filter is basically impossible to find locally and always out of stock everywhere else. Fast, friendly, and solved my problem perfectly. Will buy again!

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Hobbyist in Singapore
I’ve known Enderwick since 2014 and worked alongside him for many years. With over a decade in the industry, he and his team bring an extremely high level of expertise.He has built an enormous 3D printing community here in China and is always coming out with new solutions—each one never fails to impress me.

Daniel O'Connor

Deputy Vice President of TCT Magazine
The support offered after i wrote about a defective product was nothing short of exemplary, i applaud Call3D and its support team who fixed my problem swiftly, and made sure to take notice!

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Operational Quality Sterile Lead
When EP invited me to Shenzhen back in 2019, I was absolutely blown away by the hardware innovation coming out of China. Just one year later, Bambu Lab burst onto the scene—and their solutions have grown right alongside Bambu, evolving from the very beginning to where they are today.

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VP for Global Analysis at CONTEXT
Decent and helpful staff - customer service is outstanding. Secure payment and fast shipping. The items are of great quality. Highly recommended!

Oliver Fodor

Technical Manager
Bought a ventilation system but changed my mind last minute. I thought returns would be a huge hassle, but they told me there’s a return warehouse in Houston only about a 10-minute drive from where I live in Missouri City. Drove over and returned it super easily. Super convenient return process, great experience overall!

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Project manager

Bambu PEEK Filament – Kexcelled K11

$499.00

Bambu PEEK Filament – Kexcelled K11