Comparison

SLS PA12 Powder vs PEEK

A side-by-side comparison of Polyamide 12 Powder for Selective Laser Sintering and Polyether Ether Ketone.

Physical

Density
1.01-1.02 g/cm³
1.32 g/cm³
Water Absorption (24h)
0.2-0.5 %
0.15 %
Transparency
Opaque
Opaque (amber)
Shrinkage
Moderate (0.5-1.0%)
1.1 – 1.4 %

Mechanical

Young's Modulus
1.5-2.0 GPa
3.6 GPa
Tensile Strength
50-60 MPa
100 MPa
Elongation at Break
20-30 %
50 %
Impact Strength (Izod)
5-9 kJ/m²
55 J/m
Flexural Strength
170 MPa

Thermal

Glass Transition Temperature
45-55 °C
143 °C
Melting Point
175-185 °C
343 °C
Continuous Service Temperature
70-80 °C
260 °C
Heat Deflection Temperature
40-50 °C @ 0.45 MPa
160 °C

Electrical

Dielectric Constant
3.5-4.0
3.2
Volume Resistivity
10¹⁰-10¹² Ω·cm
10¹⁶ Ω·cm
Dielectric Strength
15-20 MV/m

Chemical resistance

Acids
Good resistance
Excellent
Bases
Good resistance
Excellent
Solvents
Resistant to oils, greases, fuels. Attacked by strong acids.
Excellent
UV Resistance
Moderate
Fair
Hydrolysis (steam)
Excellent

Sustainability

Recyclability
Recyclable (within SLS process, often 50% recycled)
Recyclable (specialty)
Recycling Code
7 (Other)
7
Carbon Footprint
High
~30 kg CO₂e / kg