SLS PK

Engineering Plastics

Chemical resistantHeat resistantFunctionalDurable

SLS PK (polyketone) is an engineering-grade thermoplastic processed via selective laser sintering. Known for its toughness and resistance to fuels, oils, and other hydrocarbons, PK offers stable mechanical properties even in chemically demanding environments. Compared to polyamides, it absorbs significantly less moisture, making it ideal for applications where dimensional stability is critical. In its standard finish, SLS PK parts feature a matte white to off-white color with a slightly grainy surface typical of the process. The combination of durability, chemical resistance, and low moisture uptake makes SLS PK well-suited for functional prototypes and end-use parts in automotive, chemical processing, and industrial equipment.

Print with SLS PK

Mechanical Properties

Tensile strength40–55 MPa

Tensile modulus1800–2300 MPa

Elongation20–45 %

Flexural strength50–80 MPa

Flexural modulus1800–2300 MPa

Density1.23 g/cm³

Thermal

Heat deflection at 66 PSI90–110 °C

Print Constraints

Maximum build volume

400 × 400 × 450 mm

Default layer height0.15 mm

Default infill100%

Min embossing0.3 mm

Min engraving0.3 mm

Accuracy± 0.2 mm

Warping riskModerate

Interlocking partsSupported

Available finishes

Each finish can be combined with the available colors at checkout.

Standard

1 color

SLS PK is a tough, chemically resistant thermoplastic with low moisture absorption. In its as-sintered finish, it appears matte gray to off-white with a slightly rough texture, ideal for durable functional parts.

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