Dear Karol Murgrabia ;

The ideal powder sizes for Additive Manufacturing generally range from 15 to 75 microns. Using a 75 µm sieve is suitable for sifting large particles, a 45 µm sieve for medium-sized particles, and a 20 µm sieve for very fine powders.

Karol Murgrabia

Use sieves with sizes 15 µm (lower limit) and 63 µm (upper limit) for LPBF. Optionally, include 45 µm and 32 µm (to act as intermediate ) @for better control of particle size.

For sieving gas atomized powder for laser powder bed fusion, use these sieve sizes:

Consider a finer sieve (like Mesh 200) for very fine particles if needed. Adjust based on your specific powder and application requirements.