Microstructural evolution and mechanical properties of 300M steel produced by low and high power selective laser melting

Guanyi Jing, Wenpu Huang, Huihui Yang, Zemin Wang

Table 2 Parameters used to produce the cubic samples with relative density more than 99.9% by SLM.

Laser power, P (W)	Layer thickness, δ (mm)	scanning velocity, v (mm/s)	hatch spacing, h (mm)	P/v (J·mm^-1)	P/v (W·s^0.5·mm^-0.5)
300	0.04	800	0.10	0.375	10.6
600	0.08	600	0.12	1.0	24.5
800	0.08	800	0.14	1.0	28.3
1000	0.12	600	0.16	1.67	40.8
1900	0.16	1000	0.18	1.9	60.1