Metal SLM 3D printing technical parameters
1. Maximum molding printing size of metal 3D printer: 280x280x350mm;
2, 3D printing layer thickness: 0.02mm~0.04mm;
3, 3D printing accuracy: typical accuracy: ± 0.02-0.05mm (accuracy is related to geometric shape.Vary according to product size, printing direction, material and post-processing method.;
4, later processing: high temperature annealing, polishing, welding and other processing;
3D printed material characteristics
3D Printing aluminum alloy AlSi10MG is ideal for combinations requiring good thermal properties and low weight.They can be machined by hand, spark etched, welded, micro-shot peening, polished and plated.
Metal 3D printing design rules and matters needing attention
Material data
| Precision of parts | |
| ± 100 μm | |
| The minimum wall thickness | approx. 0.3 – 0.4 mm |
| approx. 0.012 – 0.016 inch | |
| Surface roughness | Ra 6 – 10 μm, Rz 30 – 40 μm |
| Ra 0.24 – 0.39 x 10-³ inch | |
| Rz 1.18 – 1.57 x 10-³ inch | |
| Fine shot peening after treatment | approx. 0.012 – 0.016 inch |
| approx. 0.012 – 0.016 inch | |
| approx. 0.012 – 0.016 inch | |
| Mechanical properties of parts | |
| Tensile strength | |
| In the horizontal direction（XY） | 430 ± 20 MPa |
| 62.4 ± 2.9 ksi | |
| In the vertical direction（Z ） | 430 ± 20 MPa |
| 62.4 ± 2.9 ksi | |
| The yield strength（RP 0.2％） | |
| In the horizontal direction（ XY ） | 245 ± 10 MPa |
| 35.5 ± 1.5 ksi | |
| In the vertical direction（Z ） | 220 ± 10 MPa |
| 31.9 ± 1.5 ksi | |
| Modulus of elasticity | |
| In the horizontal direction（ XY ） | approx. 70 ± 5 GPa |
| approx. 10.2 ± 0.7 Msi | |
| In the vertical direction（Z ） | approx. 65 ± 5 GPa |
| approx. 9.4 ± 0.7 Msi | |
| Elongation at break | |
| In the horizontal direction（ XY ） | (9.5 ± 2) % |
| In the vertical direction（Z ） | (7.5 ± 2) % |
| Hardness | 120 ± 5 HBW |
| Fatigue strength | |
| In the vertical direction（Z ） | 97 ± 7 MPa |
| 14.1 ± 1.0 ksi |
Note:
1. Mechanical strength test, in accordance with ISO 6892-1:2009 (B) Appendix D, proportional sample, sample diameter is 5mm, the original standard distance length is 25 mm (1 inch).
2, According to Brinell hardness (HBW 2.5/62.5) hardness test in accordance with DIN EN ISO 6506-1.Note that the measured hardness can significantly depend on how the specimen is ready.
3. In the fatigue test with a test frequency of 50 Hz, R = -1, the measurement stops at 5 million cycles without breaking.
Stress relief: annealing at 300 ° C (572 °F) for 2 h.
