Robert Wetherbee
Analyst · JPMorgan
Thanks, Scott. Here we are over a year since the world went into lockdown as a result of the COVID-19 pandemic. So much has changed in the last 4 quarters, and it's easy to focus on the more challenging aspects of this period.
At the same time, it's important to remember that we also changed some things, those within our control for the better. Like many, we quickly innovated within our digital technology infrastructure to thrive on remote collaboration. Technology allowed us to streamline our processes and work more efficiently overall. We'll continue to drive these improvements utilizing new skills and tools to provide more flexibility to our employees and create better connections with our customers, and we'll capture the associated structural cost savings.
I'm pleased to see millions of people returning to the skies for the summer travel season. Every day seems to bring another sign of recovery in airframe and jet engine demand. The current economic reawakening and everything from travel to consumer goods to energy is real.
Despite lingering pandemic-related uncertainties, I'm confident the desire to travel is significant and growing worldwide. Ultimately, that drives the sustained lengthy backlog for any airliner programs. At ATI, we're ready to produce what our customers need.
With that as a backdrop, we generated second quarter financial results that showcase the improving trends in our end markets. At the same time, they reflect the negative impact of the recently concluded strike by the United Steelworkers at our Specialty Rolled Products or SRP business. Excluding the $40 million cost attributed to the strike and a small improvement in our restructuring reserves, we lost $0.12 per share in the second quarter. Despite the earnings loss, the aerospace recovery is readily apparent beneath the headline numbers.
Our jet engine product revenues were up over 20% compared to the first quarter 2021. The High Performance Materials & Components segment, or HPMC, saw its margins improve by more than 200 basis points sequentially and nearly 300 basis points year-over-year. Very good news that Don will cover in more depth in a few minutes.
As we discussed on the first quarter earnings call in April, we were incredibly disappointed that the union leadership chose to call a strike at our major SRP operating locations. Our robust continuity plans allowed us to maintain operations during the strike. The new 4-year labor agreement was ratified on July 13. Many represented employees returned to their positions within a week of ratification. We're safely and efficiently ramping up operations to their prior production levels. We're on track and expect to be back to full production capabilities in September.
I've been asked many times by many people inside and outside of ATI, some form of the question, was the strike worth it? Clearly, we would have preferred to continue negotiating to reach an agreement without a work stoppage. A competitive cost structure for this business is imperative. Left unresolved, we'd be facing rapidly escalating health care costs that were on a trajectory to double every 7 years. Product pricing can increase fast enough to offset that level of health care inflation. The SRP business would have fallen behind its competition. We were compelled to act now to find a solution.
Under this contract, annual health care cost inflation will be capped at 3.5%. The represented employees are responsible to take any necessary actions required to cover annual overage amounts. The SRP business is now appropriately focused on getting back to full speed, providing our customers with the materials and components they need. I want to thank our customers for partnering with us to get through this challenging time. Also, thank you to the very dedicated employees who ran our facilities during the strike, supplying our customers and protecting our business.
To close out my comments related to the SRP business, I have 2 pieces of good news to share. First, the transformation initiative to exit standard stainless sheet products is on track and will be completed by year-end 2021 as planned. We're making excellent progress on consolidating our footprint.
Second, we recently signed a long-term agreement with JSW Steel USA to toll convert a significant percentage of their Ohio-produced carbon steel slabs through our hot rolling and processing facility in Pennsylvania. This multiyear agreement provides a meaningful opportunity to increase our asset utilization and cash flow. We're happy to partner with JSW to bring the exceptional quality and gauge control of our world-class HRPF to their customers.
We're currently ramping up production. Congratulations to the operating team for setting a production record for carbon steel toll conversion volume in the month of June, even in the midst of the strike at this facility. So what are we seeing in our key end markets? Well, for the first time in several quarters, the news is encouraging across most of our portfolio.
To ensure an apples-to-apples comparison, the market data shown in the quarterly earnings presentation and referenced in my comments, excludes SRP sales from all periods. This removes the strike impact from the comparison. I believe this provides the most realistic view of our underlying performance and the true market demand.
Using that context, sales increased sequentially in each of our major end markets with the exception of electronics, which is being compared to record results in Q1. On a year-to-year basis, we grew sales in most of our key end markets, most notably Energy, up 60%; and Defense, up 22%.
We continue to gain momentum in our largest key market, commercial jet engines. This is principally driven by the recovery of narrowbody platforms, particularly engine programs used on the A320 and A321 aircraft families.
As we said on the last few calls, the demand recovery began in our Forgings business where lead times are 6 to 9 months ahead of engine production. Due to the market recovery and our recent share gains, our Forgings revenue exceeded both the prior year and the prior quarter levels. We expect this positive growth trend to continue and expand as increased production rates on the 737 MAX become a larger part of our order book.
The return to growth in Jet Engine Specialty Materials has lagged Forgings, largely due to pockets of stranded inventory throughout the supply chain. As expected, this inventory is depleting, albeit at an uneven pace, according to customer and product form.
In the second quarter, sales of our Specialty Materials like Rene 65 for LEAP engines grew significantly compared to the first quarter, but were still below prior year. We anticipate demand for materials to continue to increase for narrowbody engines, but lag for widebody engines. This uneven pull, coupled with any remaining channel inventory will make for a somewhat choppy growth trajectory quarter-to-quarter for the balance of the year.
Rounding out commercial aerospace, the airframe market continues to be soft. This is largely due to the much discussed sluggish demand for widebody aircraft due to subdued international travel and stranded supply chain inventory. We expect this trend to continue throughout 2021 and possibly into early 2022 as the industry awaits the catalyst for increased widebody production rates.
Our newly won European OEM Airframe business begins production in the second half of 2021, initially at low levels. This will partially offset the anticipated destocking pressure at our primary domestic airframe customer.
As I mentioned earlier, Defense continues to be a growth market for ATI.
Our broad materials portfolio serves customers with a wide range of demanding applications, ensuring we can be successful under almost any defense budget or economic backdrop.
Our second quarter growth was driven by naval nuclear applications and rotorcraft products to support increased demand for U.S. navy ships and heavy-lift helicopters. We expect our Defense business to continue to grow and are seeing titanium armor plate demand return in the second half of 2021, in support of a new U.K. armored vehicle program.
Turning to the Energy markets. We experienced significant growth, largely in our specialty energy portfolio. These increases primarily supported land-based gas turbine production in Asia where energy demand is increasing. Sales to civilian nuclear customers added to this growth.
Looking ahead, we see continued improvements in Energy markets as the world slowly reopens from pandemic lockdowns and economic growth drives increasing energy needs.
Wrapping up the market's discussions, results were mixed in our 2 smaller differentiated markets. We saw the expected return to growth in medical applications as hospitals perform more elective surgeries and diagnostic testing procedures. Both our MRI and Implant Materials sales increased sequentially. We expect demand to improve modestly over the coming quarters, led by MRI.
In the Electronics market, sales decreased from record levels in the first quarter of 2021, but grew year-over-year. Sales of ATI's specialty alloy powders increased versus both prior periods. We expect demand to remain strong for these products for the balance of 2021.
With that, I'll turn the call over to Don to cover our second quarter financial results in detail and provide our financial performance outlook for the third quarter and full year. After he concludes, I'll offer a few final thoughts before opening the line for your questions. Don?