Due to rising demand for 3D-printable superalloy materials from companies in the aerospace, automotive and industrial segments, Digital Metal has launched two superalloy grades for use in extreme environments. The grades are named DM 247 and DM 625. The unique properties of Digital Metal's binder jetting technology make it highly suitable for printing superalloys, including non-weldable grades, with near full density. For more information see the IDTechEx report on 3D Printing Materials 2019-2029: Technology and Market Analysis.
Superalloys are metal materials that exhibit great strength and corrosion resistance even when subjected to high heat and stress. These properties make them especially suitable for use in challenging applications such as aerospace, automotive and chemical. However, so far it has been difficult to use non-weldable materials such as MAR M247 in 3D printing, where high solidification rates and thermal gradients are inherent.
Digital Metal's unique binder jetting technology helps avoid most of these problems by printing in an ambient temperature without applying any heat, followed by a separate sintering step. During sintering densification takes place without melting and with minimal thermal gradients during cooling from sintering temperature.
The DM 247 is based on the non-weldable MAR M247, which is widely used as material for turbine blades and in other applications with elevated temperatures. The DM 625 is an Inconel 625-grade. Its application areas range from seawater applications and chemical processing equipment, to nuclear industry and aerospace.
"We have been receiving qualified requests for these materials from various large companies," says Ralf Carlström, General Manager at Digital Metal. "Many producers within the aerospace and automotive business have long been anticipating high-quality superalloys that are suitable for 3D printing. Now we can offer them the perfect combination - our unique binder jetting technology and superalloys that are specially developed for our printers."
Digital Metal is the world's first company to commercialize high-precision 3D metal printers for serial production of small, high-volume components. Digital Metal's proprietary binder jetting technology enables the production of high-quality complex objects with superior surface finish, which is not possible with competing technologies.
Source and top image: Digital Metal