420 Stainless Steel Infiltrated with Bronze ExOne’s 3D Printed 420 Stainless Steel infiltrated with Bronze is a matrix material composed of 60% stainless steel and 40% bronze infiltrant. This material offers good mechanical properties, is available in both an annealed and non-annealed condition, is able to be machined, welded and polished, and offers excellent wear resistance. Applications This material system is ideally suited for parts exposed to highly abrasive environments such as pump components, and parts for down-hole drilling and mining equipment. Additional applications include industrial components, molds, tooling, art objects and decorative hardware. Composition Stainless Steel: Alloy 420 Bronze: 90% Cu / 10% Sn Printed part Using binder jetting technology, ExOne’s state-of-the-art 3D Printing machines produce parts directly from CAD models by precisely controlling the jetting of binder onto a powder bed, and then subsequently spreading new layers of powder. This process is repeated until the part is completed. This 3D Printing process offers increased design flexibility, reduced manufacturing cost and shortened lead times. Post Processing After printing is complete, the parts are cured in an oven, which enables the parts to be handled. After curing, the parts are sintered and infiltrated with bronze above 1100°C. Cool down can be varied to control the machinability and hardness of the material. INDUSTRIAL-GRADE MATERIALS FOR 3D PRINTING

420 Stainless Steel Infiltrated with Bronze Typical Material Properties Material Propertes Test Method Tensile Strength Ultimate Strength Conventionally machinable Refer to ExOne for recommendations Use silicone bronze rod & TIG weld Use silicone bronze rod & TIG weld Yield Strength (0.2% offset) Elastic Modulus Elongation Hardness Fractional Density Thermal Conductivity Specific Heat Thermal Expansion Coefficient Surface Finish After sintering:  Bead blasting:   Printed part, raw finish Printed part, polished The data and other information (Information) presented in this Data Sheet are provided...