Bambu Lab TPU 90A Black 1kg

Bambu Lab TPU 90A Black 1kg

Bambu Lab TPU 90A Black is a flexible 3D printing filament designed directly by the Bambu Lab team for reliable and predictable printing of flexible parts. With a hardness of Shore 90A, it combines high flexibility with good shape stability and abrasion resistance.

Main advantages

• Hardness Shore 90A – soft enough for bending, but stable for functional technical parts.
• High toughness and impact resistance – ideal for impact-resistant components, protective elements, and mechanically stressed parts.
• High elongation at break – more than 650 % in X/Y axes, thanks to which the parts can withstand repeated deformations.
• Good layer adhesion – minimizes delamination and increases the lifespan of prints.
• Low water absorption – lower sensitivity to moisture than many other flexible materials, yet dry storage is recommended.
• Optimized for Bambu Lab printers – excellent results with preset profiles in Bambu Studio, including high feeding reliability.

Typical use

• Protective cases, covers, bumpers
• Seals, sleeves, grommets and anti-vibration elements
• Flexible couplings, hinges, and articulated parts
• Handles, grips and ergonomic tool elements
• Parts that must combine flexibility, durability, and long life

Recommended print settings

(always verify specific limits in the slicer profile and printer documentation)

• Material: TPU (thermoplastic polyurethane)
• Hardness: Shore 90A
• Nozzle temperature: approx. 220–250 °C (depending on printer and speed)
• Bed temperature: approx. 35–45 °C
• Print speed: rather lower, for high-quality surface and reliable TPU feeding
• Fan: medium – according to model details
• Recommendation: short filament path to the extruder, limited retractions, dry storage

Material properties (Bambu Lab reference values)

• Density: approx. 1,24 g/cm³
• Hardness: Shore 90A
• Tensile strength (X/Y): approx. 12,5 MPa
• Tensile modulus (X/Y): approx. 5,3 MPa
• Elongation at break (X/Y): > 650 %
• Water absorption rate: approx. 0,61 % (25 °C, 55 % RH)

These values are measured on standardized specimens according to ISO standards and serve as an informative guide for part design.

Compatibility and storage

• Suitable for most FDM 3D printers supporting TPU filament printing.
• For best results, use a sealed and dry filament box, especially during longer prints.
• Filament drying is recommended before demanding applications (e.g., for fine details or long prints).

Summary

Bambu Lab TPU 90A Black is a reliable flexible filament for users looking for a combination of flexibility, strength, and easier printing compared to softer TPUs. It is ideal for functional parts that must withstand impacts, bends, and long-term mechanical stress, and is also fully optimized for the Bambu Lab ecosystem.

Key features:

• Flexible TPU filament with Shore 90A hardness suitable for functional and flexible parts
• High elongation at break and excellent impact resistance
• Good layer adhesion for durable prints without delamination
• Optimized for Bambu Lab 3D printers with ready-made profiles in Bambu Studio
• Low water absorption compared to common flexible materials
• Black design for technical, design, and final functional parts