Apple's titanium alloy process breakthrough

Starting in 2025, Apple announced that all Apple Watch Ultra 3 and titanium Apple Watch Series 11 cases will be manufactured using a 3D printing process and use 100% aerospace-grade recycled titanium powder. This means that 3D printing technology has officially entered the mass production sequence of Apple's main products from the prototype verification stage.

At the same time, according to public information, the USB-C interface parts of the iPhone Air also use 3D printing titanium alloy technology. Compared with the traditional forging process, the material consumption of this part is reduced by 33%, providing process support for the realization of a thinner interface structure.

Apple's titanium case uses a laser powder bed melting (LPBF) process. In the material preparation process, grade 5 titanium waste is converted into grade 23 titanium with lower oxygen content, and the finished product finally presents the characteristics of grade 5 titanium through the gradual increase of oxygen content during the 3D printing process. This process realizes the closed-loop utilization of high-end titanium materials.

In terms of specific printing parameters, the thickness of the titanium powder is controlled at 60 microns, and the powder melting is carried out with six lasers, and the number of stacked layers of a single case exceeds 900. This precise process control ensures that the printed parts are at a level comparable to traditional manufacturing processes in terms of mechanical properties and dimensional accuracy.

3D printing significantly improves the integrity of the product, realizing the integrated molding of the antenna window and the optimization of the waterproof sealing structure. At the same time, the bonding interface between plastic and metal is improved by printing specific textures. These designs, which used to rely on traditional subtractive manufacturing, often required additional assembly steps or sacrificed some structural integrity, are now being implemented in one category.

Improved material utilization is the most intuitive advantage of 3D printing compared to traditional subtractive manufacturing. According to Sarah Chandler, Apple's vice president of environment and supply chain innovation, only half of the raw materials required for titanium 3D printing are the original. "Reducing it by 50% is a huge achievement, which means you can now make two watches from the materials that were previously needed for one watch."

According to this estimate, titanium alone reduces Apple's annual material consumption by more than 400 tons. Behind this data is the resource conservation of the whole chain of raw material mining, powder preparation, processing and molding, which directly serves Apple's carbon neutrality goal of the whole industry chain by 2030.

In March 2026, Bloomberg reporter Mark Gurman revealed that Apple is developing aluminum alloy 3D printing technology for future MacBooks, iPhones and other products. From titanium alloys to aluminum alloys, Apple's additive manufacturing landscape continues to expand.

For the consumer electronics industry, the large-scale application of titanium alloy 3D printing is not only a replacement for a process route, but also a redefinition of the boundaries of high-end material applications.