SLS – selective laser sintering

Procedure description

Fusing of plastic powder using laser radiation
Layer-by-Layer construction made from thermoplastic powder
Layer thickness usually 0.1 mm
Construction space: 300 x 350 x 400 mm

Technical data

Advantages

Wide range of materials such as polyamides (filled/unfilled), PP, TPU, TPE
Functional components with chemical resistance, high temperature resistance, and very good mechanical and technological properties
Finishing generally possible (surface finish, infiltration, painting etc.)
Production tolerance +/-0.3% (absolute +/-0.3 mm)

Disadvantages

Component surfaces not smooth (rough)
Production tolerances are greater than for SLA process
Production times are generally longer than for SLA process

Material properties

	Werkstoff	Zugfertigkeit [MPa]	Bruchdehnung [%]	E-Modul [MPa]	Shore-Härte	Wärmeformbeständigkeit
SLS	DuraForm PA [PA12]	43	14	1.586	73D	130°C [ET]
	DuraForm GF [PA12+30%GB]	33	2	5.900	k.A.	150°C [ET]
	Alumide [PA12+30%Al]	48	4	3.800	76D	130°C [ET]
	TPU	20	250	k.A.	92 A	90°C [ET]
	DuraFormFlex without infiltration	1,8	110	7,4	45-75 A	120°C [ET]
	DuraFormFlex, infiltration with silicone	2,3	151	9,2	> 60 A	120°C [ET]
	DuraFormFlex, infiltration with PU	2,3	151	9,2	> 60 A	120°C [ET]
	PP 40	26	42	1.400	70 D	71°C 56°C

The material data sheet contains guide values. The parameters are influenced by processing conditions, additives, and modifications, and are formulated on the basis of current knowledge and experiences. rpm does not accept any liability for the achieving of specific properties.