5JAN201722042080 January 26, 2018 To My Fellow Stockholders: After a challenging fiscal 2017 characterized by competitive pricing and low volume in some of our key markets, order entry has gained momentum through the beginning of fiscal 2018. We are hopeful that this is indicative of returning strength in our end markets. Aerospace, buoyed by the ramp-up of the new engine platforms, along with better activity in chemical processing special projects, are leading the way at this point, and we expect these markets, along with our tolling business and smaller industrial markets like heat treating and energy, to continue to expand as we move deeper into 2018. During fiscal 2017 and early fiscal 2018, we completed our major capital expenditure projects. During this cycle, we rebuilt, expanded, and improved our operating facilities and capabilities. Supporting our growth in aerospace, we upgraded and expanded our tubular products facilities, allowing us to ship a record volume of tubular products in 2017. In our flat roll operations, we have completed our capital investments in heat-treating, rolling and shape correction operations, particularly a significant expansion in our cold-rolling and finishing capabilities, which is expected to help us meet increasing demand in the aerospace market. We also completed the implementation of our new global IT system, migrating a myriad of discrete systems into a single, global operating platform enhancing our ability to monitor and optimize worldwide manufacturing and distribution operations. Supporting our service and value-added operations, we expanded our operations in LaPorte, Indiana and Openshaw, England in order to more efficiently meet the needs of our key markets. As we look further into fiscal 2018, we are seeing a stronger and higher quality order book. We expect operating and financial results to improve as fiscal 2018 progresses. In the aerospace market, we expect volume to surpass prior record levels, resulting in revenue growth in mid-to-high single digits, corresponding with the increase in commercial aircraft deliveries and jet engine deliveries along with a replenishment of the MRO supply chain. Commercial aircraft deliveries in 2015 were just slightly over 1,560, and the projection for 2020 is 2,030; jet engine shipments were roughly 3,200 in 2015 and are forecasted to be 4,100 in 2020. At Haynes, the aerospace market is the core of our value-added manufacturing in high temperature alloys. Aero-engine efficiency and reliability necessitates the highest- quality, highest-performance and highest-reliability parts and manufacturing processes. Haynes has proven to be capable of meeting the needs of this market, and our operations investments over the past decade have been targeted to meet the growth and the increased quality and performance needs of this market. In our chemical processing industry market, we saw our lowest volume levels in the recent past in the second quarter of fiscal 2017. However, from those lows, volumes increased 50% in the fourth quarter of fiscal 2017 from the very low levels of the second quarter of fiscal 2017. Perhaps more importantly, in the fourth quarter of fiscal 2017, and continuing into the first quarter of fiscal 2018, our specialty project applications experienced the strongest order entry we’ve seen in over a year. Applications requiring our proprietary HASTELLOY↧B-3↧ alloy which have been largely dormant for over two years have restarted. We are also seeing better activity in higher volume alloys for applications in areas such as pharmaceuticals and fertilizers. Like aerospace, we expect this market, including specialty applications, to improve as we progress through fiscal 2018. In the industrial gas turbine industry, large frame applications are experiencing very challenging conditions, resulting in recent major restructuring announcements by General Electric and Siemens. Smaller frame applications, such as those supporting pipeline systems, are moving off the low levels we experienced during the oil & gas collapse. Overall, we expect this market to remain largely depressed with volume increases on smaller frame applications and MRO activity on larger frame applications being offset by the lower volumes in the large frame OEM market. As always at Haynes, we do see upside from the results we have achieved in application development. In this market, our proprietary HAYNES↧282↧ alloy has won applications on new platforms and is being integrated into maintenance applications on some existing platforms. 5JAN201803220121 Haynes continues our research and development activities aimed at developing new proprietary January 26, 2018 alloys to meet anticipated customer demands for better and more efficient products in replacement of older alloys. As a result, Haynes continues to march forward in its hallmark tradition of innovation to Dear Stockholders of Haynes International, Inc.: serve customers’ needs to advance the capability of their products and technologies. Coal gasification, renewable energy and nuclear energy all present opportunities for our materials in addition to the You are cordially invited to attend the Annual Meeting of Stockholders of Haynes growth of our core markets and traditional applications like medical and oil & gas. Some of our recent International, Inc. (‘‘Haynes’’) to be held Wednesday, February 28, 2018 at 10:00 a.m. (EST) at the developments/successes in innovation and application development include: Sheraton Indianapolis Hotel at Keystone Crossing, Indianapolis, Indiana 46240. • HAYNES↧ 282↧ alloy: While the use of 282 alloy at Pratt & Whitney continues to grow, the The business to be discussed and voted upon by the stockholders at the annual meeting is alloy is now also being specified by another major aircraft engine manufacturer for the next described in the accompanying Notice of Annual Meeting and Proxy Statement. generation of their products in specific critical applications. For industrial gas turbines, the We hope you are able to attend the annual meeting personally, and we look forward to meeting alloy’s use continues to expand into the next generation of higher efficiency engines. The alloy is with you. Whether or not you attend, it is important that your stock be represented and voted at the also being considered in automotive and high efficiency power generation projects. meeting. I urge you to please complete, date and return the proxy card in the enclosed envelope. The • HAYNES↧ 244↧ alloy: This new alloy, with its excellent strength and low thermal expansion vote of each stockholder is very important. You may revoke your proxy at any time before it is voted at characteristics, has already been specified by a major commercial aerospace engine manufacturer the annual meeting by giving written notice to the Secretary of Haynes, by filing a properly executed for the next generation of engines. This engine platform will be the sole power plant for a new proxy bearing a later date or by attending the annual meeting and voting in person. platform being launched in the very near future. On behalf of the Board of Directors and management of Haynes, I thank you for your continued • HAYNES↧ 233↩ alloy: This very recently introduced alloy, with its unmatched combination of support. high temperature strength and oxidation resistance among wrought alloys, is being scaled up in our manufacturing operations. Already, a major commercial aerospace engine manufacturer is Sincerely, evaluating it for their next generation of engines. Haynes International, Inc. • HAYNES↧ HR-235↧ alloy: This alloy possesses excellent resistance to metal dusting, a major problem in some specific petrochemical processes and production of synthetic gas (‘‘syngas’’). It 13JAN201720565083 is being evaluated by major companies for the new technologies being developed to produce syngas and liquid fuel from gas (GTL, gas to liquid) technologies. Mark M. Comerford President and Chief Executive Officer • HAYNES↧HR-224↧ alloy: This alloy has excellent high temperature oxidation resistance and fabricability, and is being specified in new technologies being developed to produce alternative (‘renewable’’) energy. In summary, operationally, we believe we have successfully positioned the Company to meet the needs of our target markets as we have rebuilt and upgraded our infrastructure over the past few years. Commercially, we’ve centralized our value-added operations and increased our capabilities with the addition of operations like LaPorte Custom Metal Processing, and we are seeing stronger order entry and a higher quality backlog. We’ve also developed new alloys that have been specified into core and specialty applications by our target accounts and markets. We believe we are well-positioned to meet the needs of our core accounts as we enter the expected upcycle. We expect this upcycle will enable us to capture operating leverage created from our recent capital projects. As always, I would like to offer my most sincere thanks to my fellow employees at Haynes, our customers and stockholders for their commitment to, and support of, our company. I would also like to welcome Dawne Hickton to our Board of Directors. Dawne’s wealth of knowledge in specialty metals and markets is a welcome addition to our company. Sincerely, 13JAN201720565083 Mark Comerford President and Chief Executive Officer 5JAN201803220121 HAYNES INTERNATIONAL, INC. NOTICE OF ANNUAL MEETING OF STOCKHOLDERS TO BE HELD FEBRUARY 28, 2018 Stockholders of Haynes International, Inc.: The Annual Meeting of Stockholders of Haynes International, Inc. (‘‘Haynes’’) will be held at the Sheraton Indianapolis Hotel at Keystone Crossing, 8787 Keystone Crossing, Indianapolis, Indiana 46240 on Wednesday, February 28, 2018 at 10:00 a.m. (EST) for the following purposes: 1. To elect Donald C. Campion as a director of Haynes to serve for a one-year term; 2. To elect Mark M. Comerford as a director of Haynes to serve for a one-year term; 3. To elect John C. Corey as a director of Haynes to serve for a one- year term; 4. To elect Robert H. Getz as a director of Haynes to serve for a one-year term; 5.