About

SLS PEEK (polyether ether ketone) is an ultra-high-performance thermoplastic used to manufacture parts that require exceptional mechanical strength, thermal stability, and chemical resistance. When processed via Selective Laser Sintering (SLS), PEEK yields high-density, precision components with properties comparable to injection-molded PEEK, enabling true end-use manufacturing for critical engineering applications.
As printed, SLS PEEK parts exhibit a light tan to beige matte finish with the fine micro-granular texture characteristic of high-temperature sintering. The material’s inherent stability ensures excellent dimensional accuracy, low creep, and reliable performance under continuous loads. With a heat deflection temperature above 250 °C, superior fatigue resistance, and full chemical inertness, SLS PEEK excels in environments where ordinary polymers fail.
SLS PEEK is widely used for aerospace components, medical instruments, high-temperature housings, bushings, gears, brackets, manifolds, and components exposed to solvents or aggressive chemicals. Its combination of strength-to-weight ratio, biocompatibility (for certain grades), and long-term reliability makes it one of the most capable polymers available for additive manufacturing.

Technical Details

Accuracy

±0.3% (lower limit of ±0.03 mm)

Density

1.23 g/cm³

Min. wall thickness

0.8 mm

Tensile strength

78 - 100 MPa

Tensile modulus

3500 - 4100 MPa

Tensile elongation

2 - 8%

Flexural strength

100 - 160 MPa

Flexural modulus

3600 - 4200 MPa

Default layer height

0.12 mm

Embossing

min. 0.4 mm

Engraving

min. 0.4 mm

Warping risk

High

Maximum printing dimensions