Consumer electronics are increasingly exhibiting a strong demand for personalized customization. Metal 3D printing technology not only responds swiftly to design requirements by producing components with intricate internal structures and refined surfaces, but also demonstrates significant advantages during the product development phase. Compared to traditional manufacturing processes, which often suffer from prolonged cycles and limited flexibility, metal 3D printing enables rapid prototyping, substantially enhancing R&D efficiency. Furthermore, it offers an effective solution to challenges such as the low thermal conductivity and high machinability difficulty of titanium alloys, providing an ideal option for lightweight design in consumer electronics—combining high strength with reduced weight.

1. By utilizing near-net-shape fabrication for direct-formed components and combining CNC machining for precision finishing of decorative and assembly surfaces, this approach significantly streamlines the production workflow and substantially reduces both the manufacturing complexity and cost associated with stainless steel and titanium alloy components.
2. It enhances functional integration within components, reduces the total number of parts, and enables the fabrication of lighter and thinner structural designs.
3. This method facilitates mass production with higher efficiency and more consistent quality output.

Using metal powder as raw material, the 3D model data is sliced in the Z direction into two-dimensional planar graphics. The two-dimensional planar graphics are sintered and formed on the powder bed by controlling the laser path with a galvanometer, and then the two-dimensional graphics are stacked to form a three-dimensional part.

Material type	Material designation	Tensile Strength / MPa		Yield Strength/MPa		Ductility/%
		X-axis and Y-axis direction	Z-axis direction	X-axis and Y-axis direction	Z-axis direction
aluminium alloy	AlSi10Mg	456±30	440±30	311±30	270±30	8±2
	AlSi7Mg	424±20	405±20	289±20	262±20	≥7
	aldural	541±15	515±15	520±15	475±30	≥10
titanium alloy	TC4	1040±90	1050±90	980±90	1000±90	14±4
	TA15	1118±100	1142±100	1064±100	1118±100	12±4
stainless steel	316L	678±20	650±20	427±30	418±30	51±10
	304L	600±50	597±50	353±20	352±20	55±10
	4J36	550±50	530±50	492±50	472±50	34
	17-4PH	1110±50	1109±50	1073±50	1046±50	≥15
die steel	MS1（1.2709/18Ni300）	1833±50	1805±50	1772±50	1739±50	≥7
high temperature alloy	GH4169（In718）	1400±50	1250±50	1250±50	1250±50	9~20
	GH3625	900±50	850±50	410±50	390±50
	GH5188	954±20	888±20	449±20	441±20	64±10
	GH3536	878±50	885±50	548±30	549±30	37±10
	GH4099	1215±50	1170±50	1047±50	988±50	30±5