ExOne Expands Materials Offerings at North Huntingdon Production Service Center

• Introducing 17-4PH stainless steel, for applications demanding high tensile strength and corrosion resistance
• 17-4PH commonly desired for aerospace, automotive, defense, and medical equipment industries

The ExOne Company XONE ("ExOne"), a global provider of three-dimensional ("3D") printing machines and 3D printed products to industrial customers, announced today the availability of 17-4PH stainless steel (also known as SAE Type 630 or UNS S17400) as a printable material at its North Huntingdon production service center ("PSC"). After printing, 17-4PH parts are heat treated according to Condition H900 to increase hardness. 17-4PH is a chromium-nickel-copper precipitation hardening stainless steel used for applications requiring high strength and a moderate level of corrosion resistance. Compared with other stainless steel alloys, it is also preferred for its weldability.

Its properties are commonly desired for a wide range of applications in a variety of industries including aerospace, automotive, defense, and medical equipment. Manufacturers who supply components using 17-4PH can now benefit from the advantages of additive manufacturing using ExOne's binder jetting technology. Binder jetting creates complex parts using freedom of design that cannot be produced using traditional manufacturing methods. The availability of 17-4PH complements the PSC's other currently printable stainless steel alloys, which includes 420 stainless steel infiltrated with bronze, 316 stainless steel infiltrated with bronze, and 316 stainless steel highly sintered.

"We could not be more excited with the addition of 17-4PH to our suite of materials offerings. Given its unique characteristics, the availability of 17-4PH broadens our addressable market and potential customer base," Tim Pierce, VP of Metal Commercial Products at ExOne, explains. "The applications are plentiful and we are ready to service our customers' needs, from prototypes to serial production."

ExOne will feature 17-4PH parts at the upcoming TCT Show being held at the NEC in Birmingham, UK from September 26-28. The TCT Show is expected to attract approximately 10,000 attendees including manufacturers, designers, business leaders, early adopters, innovators and investors from over 60 countries.

Customers can order parts today from the North Huntingdon PSC or through ExOne's website: www.exone.com.

About ExOne

ExOne is a global provider of 3D printing machines and 3D printed and other products, materials and services to industrial customers. ExOne's business primarily consists of manufacturing and selling 3D printing machines and printing products to specification for its customers using its installed base of 3D printing machines. ExOne's machines serve direct and indirect applications. Direct printing produces a component; indirect printing makes a tool to produce a component. ExOne offers pre-production collaboration and print products for customers through its network of ExOne Adoption Centers (EACs) and Production Service Centers (PSCs). ExOne also supplies the associated materials, including consumables and replacement parts, and other services, including training and technical support that is necessary for purchasers of its 3D printing machines to print products. The Company believes that its ability to print in a variety of industrial materials, as well as its industry-leading volumetric output (as measured by build box size and printing speed) uniquely position ExOne to serve the needs of industrial customers.

Safe Harbor Regarding Forward Looking Statements

This news release may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act with respect to ExOne's future financial or business performance, strategies, or expectations. Forward-looking statements typically are identified by words or phrases such as "trend," "potential," "opportunity," "pipeline," "believe," "comfortable," "expect," "anticipate," "current," "intention," "estimate," "position," "assume," "outlook," "continue," "remain," "maintain," "sustain," "seek," "achieve," as well as similar expressions, or future or conditional verbs such as "will," "would," "should," "could" and "may."

ExOne cautions that forward-looking statements are subject to numerous assumptions, risks and uncertainties, which change over time. Forward-looking statements speak only as of the date they are made and ExOne assumes no duty to and does not undertake to update forward-looking statements. Actual results could differ materially from those anticipated in forward-looking statements and future results could differ materially from historical performance.

In addition to risk factors previously disclosed in ExOne's reports, the following factors, among others, could cause results to differ materially from forward-looking statements or historical performance: ExOne's ability to enhance its current three-dimensional ("3D") printing machines and technology and develop new 3D printing machines; its ability to qualify more industrial materials in which it can print; timing and length of sales of 3D printing machines; demand for ExOne products; ExOne's ability to achieve cost savings through consolidation or exiting of certain North American operations; the impact of increases in operating expenses and expenses relating to proposed investments and alliances; the availability of skilled personnel; the impact of market conditions and other factors on the carrying value of long-lived assets; ExOne's competitive environment and its competitive position; ExOne's ability to continue as a going concern; individual customer contractual requirements; the impact of customer specific terms in machine sale agreements on the period in which ExOne recognizes revenue; the impact of loss of key management; risks related to global operations including effects of foreign currency and risks related to the situation in the Ukraine and the United Kingdom's referendum to withdraw from the European Union; demand for aerospace, automotive, heavy equipment, energy/oil/gas and other industrial products; ExOne's plans regarding increased international operations in additional international locations; the scope, nature or impact of alliances and strategic investments and ExOne's ability to integrate strategic investments; sufficiency of funds for required capital expenditures, working capital, and debt service; the adequacy of sources of liquidity; the effect of litigation, contingencies and warranty claims; liabilities under laws and regulations protecting the environment; the impact of governmental laws and regulations; operating hazards, war, terrorism and cancellation or unavailability of insurance coverage; the impact of disruption of our manufacturing facilities, production service centers or ExOne adoption centers; the adequacy of ExOne's protection of its intellectual property; expectations regarding demand for ExOne's industrial products, operating revenues, operating and maintenance expenses, insurance expenses and deductibles, interest expenses, debt levels, and other matters with regard to outlook; and material weaknesses in the ExOne's internal control over financial reporting.

These and other important factors, including those discussed in ExOne's Annual Report on Form 10-K, may cause its actual results of operations to differ materially from any future results of operations expressed or implied by the forward-looking statements contained herein. Before making a decision to purchase ExOne common stock, you should carefully consider all of the factors identified in its Annual Report on Form 10-K that could cause actual results to differ from these forward-looking statements.

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