PA 2241 FR is a flame-resistant polyamide (PA 12) material, with excellent long-term stability and chemical resistance. Owing to its flame-retardant quality, this high-performance plastic is suitable for aeronautics and aerospace applications in accordance with FAR 25.853.

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Technical Specifications

Standard lead time Minimum of 4 working days , depending on part size, number of components and finishing degrees
Standard accuracy ± 0.3% (with lower limit on ± 0.3 mm)
Minimum wall thickness 1 mm, but living hinges are possible at 0.3 mm
Layer thickness 0.12 mm
Maximum part dimensions The maximum build envelope is 630 x 330 x 560 mm
Surface structure Unfinished parts typically have a grainy surface but all kinds of fine finishes are possible. Laser-sintered parts can be sandblasted, colored/impregnated, painted, covered and coated.


  Units Condition PA 2241 FR
Description     Passes aerospace flame resistance tests FAR 25.853
Density g/cm³     1.00 +/- 0.03
Tensile Strength MPa  DIN EN ISO 527 49
Elongation at Break % DIN EN ISO 527 15
Tensile Modulus MPa  DIN EN ISO 527 1900
Heat Deflection Temp °C ASTM D648 (1.82MPa) 84
Flammability properties mm JAR/FAR 25, App. F, part 1| AITM 2.0002 B Vertical Bunsen Burner Test 12s Ignition Time 1.0/1.5/2.0
Smoke generation mm JAR/FAR 25, App. F – Part V & AITM 2.0007 1.0/1.5/2.0
Hardness HRB DIN EN ISO 6508-1 89
Toxic gas generation mm AITM 3.0005 1.0/1.5/2.0

Actual values may vary with build condition

Finishing Degrees

The right finish and color can transform a print into a product. Whether you’re looking for a functional finish for color-coded components, or an aesthetic finish like flocking or high-gloss paint, take a look at your wide range of options here.

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How Does Laser Sintering Work?

Laser Sintering is a laser-based technology that uses solid powder materials, typically plastics. A computer-controlled laser beam selectively binds together particles in the powder bed, by raising the powder temperature above the glass transition point after which adjacent particles flow together. As the powder is self-supporting, no support structures are necessary.

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