Six More Alloys That Can Be 3D Printed

ExOne Company (North Huntingdon, PA), a global provider of three-dimensional printing machines and printed products for industrial applications, has announced that six additional materials are now printable in its additive manufacturing systems: Cobalt-Chrome, IN Alloy 718, Iron-Chrome-Aluminum, 17-4 Stainless Steel, 316 Stainless Steel and Tungsten Carbide.

Using printing systems that include the M-Flex™ and the recently introduced Innovent™, shops interested in 3D printing materials for their own product development are afforded the opportunity to utilize the wide variety of new materials, each offering unique properties and uses. “We developed the latest printable materials for our binder jetting process as a result of our expanding customer development programs,” said Rick Lucas, ExOne chief technology officer. “Utilization of these materials in our machines will allow users to advance our binder jetting applications with their technologies. The diversity of this group of printable materials demonstrates the breadth of industries that we touch, including the aerospace, automotive, energy, foundry and medical markets – broadening our addressable market.”

The expansion of different materials now capable of being printing includes:

Cobalt-Chrome (Co-Cr): Traditionally used in various fields where high wear-resistance is needed, including aerospace, cutlery, bearings and blades, Cobalt-Chrome alloy has recently received more attention for medical applications due to excellent resistant properties, high melting points and incredible strength at high temperatures.

IN Alloy 718: Commonly used for components in the aerospace, chemical and energy markets, with applications including gas turbine blades, filtration and separation, heat exchanger and molding processes, the alloy is desirable due to its oxidation and corrosion-resistant qualities, able to retain its strength even when subjected to extreme environments.

Iron-Chrome-Aluminum (FeCrAl): Offering superior properties as compared to the other alloys, Iron-Chrome-Aluminum alloys are widely used in electrical furnace, electrical oven, home appliance, electrical heater and infrared settings.

17-4 Stainless Steel and 316 Stainless Steel: 17-4 and 316 Stainless Steel both have broad applications in the automotive, medical and general industry markets, used to produce a range of products, including surgical tools, metallic filters, pumps, impellers and structural automotive parts. Both grades are known for their excellent mechanical and corrosion resistance properties and cost-effectiveness.

Tungsten Carbide (WC): One of the hardest carbides with a melting point of 2,770 deg C, Tungsten Carbide is mainly used in the production of high wear-resistant abrasives, carbide cutting tools (knives, drills and circular saws), and milling and turning tools used by the metalworking, woodworking, mining, petroleum and construction industries.

Materials are generally qualified for production printing through customer partnerships at one of the company’s research and development centers or in its eight worldwide production service centers (PSC). The company has previously qualified the following direct printed materials: 420 Stainless Steel infiltrated with Bronze; 316 Stainless Steel infiltrated with Bronze; Iron infiltrated with Bronze; IN Alloy 625; Bronze; Bonded Tungsten and Glass. Silica Sand and Ceramic Sand have also been qualified for indirect printing.

These qualified materials are distinguishable from printable materials in that they are commercially available for sale in industrial densities or for finished products printed at an ExOne PSC. ExOne manufactures and sells direct and indirect printing systems as well as printable and qualified materials, binder, cleaner and other consumables for use in its machines.

www.exone.com