What an unforgettable day along the Southern California coast!

51ÁÔÆæ of California was thrilled to host more than 200 valued customers at the beautiful Paséa Hotel in Huntington Beach for our 5th Annual Pacific Airshow Customer Appreciation Event!

With the Pacific Ocean as a breathtaking backdrop, guests enjoyed a spectacular day of aviation excitement, outstanding company, and world-class aerial performances.

The skies came alive with incredible demonstrations featuring the U.S. Air Force F-22 Raptor, Thunderbirds, C-17, and F-35A; U.S. Navy F/A-18, F-35C, and EA-18G; NASA Freedom 250 Jets, F/A-18, F-15, and many other impressive aircraft!

While the aerial performances were truly remarkable, the highlight of the day was the opportunity to connect with our customers and celebrate the relationships that drive our continued success.

To everyone who joined us, thank you! We sincerely appreciate your ongoing trust, loyalty, and partnership. Events like this remind us that our greatest strength is the relationships we’ve built with the customers we proudly serve.

We look forward to another incredible event next year!

Learn more about 51ÁÔÆæ’ aerospace heat treating capabilities:

/markets/aerospace

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51ÁÔÆæ was proud to once again sponsor and participate in Pritchard, Bieler, Gruver & Willison’s 9th Annual Halloween Bash at the Montgomery County Community Center in Montgomeryville, PA!

This special event brings individuals with special needs and their families together for a fun, safe, and memorable Halloween celebration, complete with trick-or-treating in a welcoming and supportive environment. All event proceeds benefit the Indian Creek Foundation, helping support valuable programs and services for individuals with special needs throughout the community.

Adding to the excitement, 51ÁÔÆæ once again teamed up with the 501st Legion – Vader’s Fist to bring a galaxy far, far away to life! Attendees enjoyed a Star Wars-themed photo experience featuring the Mandalorian, Stormtroopers, and other beloved characters. Former Philadelphia Phillies players Tommy Greene and Mickey Morandini also joined the festivities, making the celebration even more memorable.

51ÁÔÆæ is honored to support this wonderful event and help create lasting memories for individuals and families in our community!

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Congratulations to Zach Thomas, Outside Sales Manager at 51ÁÔÆæ of Western PA, and Keith Langenstein, Furnace Operator at 51ÁÔÆæ of Eastern PA, on successfully completing the Metal Treating Institute (MTI) YES Management Training Program!

Through this program, Zach and Keith have gained valuable leadership skills, management strategies, and professional development experience that will help them continue to grow as leaders within our organization.

We are proud of their accomplishments and look forward to seeing them put their new knowledge and skills into action as they strengthen their teams and contribute to 51ÁÔÆæ’ continued success.

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How accurate are hardness testers?

When properly calibrated and operated by trained personnel, hardness testers can provide precise and reliable readings. Accuracy is typically verified daily using calibrated, standardized hardness test blocks to ensure the equipment remains compliant with the applicable hardness scale and the hardness range being evaluated.

But there is an important question that is often overlooked: Does the standardized test block actually represent the parts being tested?

Take a moment to look at the calibration block. Hardness test blocks are parallel from one side to the other, highly polished, and typically less than 0.500 inches thick. Now compare that block to the actual components being tested. Are your parts equally flat, parallel, smooth, and uniform in thickness?

If not, a tester can be functioning exactly as designed while still producing results that may not accurately represent the actual hardness of the part.

What are the typical causes of poor or inconsistent results?

• Decarburization: A soft outer layer can produce a lower reading than the hardened material beneath it.
• Poor surface condition: Dirt, oil, rust, scale, scratches, or uneven surfaces can affect the reading.
• Incorrect sample thickness: Thin material can allow the anvil to influence the result.
• Equipment issues: Damaged indenters, dirty anvils, or an improperly calibrated machine can produce inaccurate readings.
• Incorrect hardness scale: Using the wrong Rockwell scale for the material can result in unreliable measurements.
• Improper technique: Incorrect indentation spacing, testing too close to an edge, movement of the sample, or vibration can all affect results.
• Curved surfaces: Cylindrical or irregular surfaces may require correction factors to obtain accurate readings.

The key point is that hardness testing is not simply a matter of placing a part in a machine and reading a number. The condition, geometry, preparation, and material of the test specimen all matter.

What other methods can be used to determine hardness?

For small components—especially parts that are difficult to test on a tabletop tester—microhardness testing may be required. Microhardness testing eliminates many of the variables associated with conventional tabletop testing. The part can be sectioned, mounted in plastic, and carefully polished before testing. This provides a controlled surface and allows the hardness profile to be evaluated at specific locations within the material.

Another valuable method is tensile testing. Keep in mind that hardness requirements correlate closely with tensile strength. For example, a hardness range of 45–48 HRC corresponds approximately to 215–238 KSI.

With tensile testing, a sample can be taken from the bar or heat from which the components were manufactured, machined to the appropriate tensile specimen dimensions, and pulled to failure. This provides not only a tensile strength value that can be correlated to Rockwell hardness, but also valuable information about yield strength and elongation.

That information can become critically important when investigating why a component failed in service. Hardness alone may tell you about the material’s surface strength, but tensile testing provides a more complete picture of the material’s actual mechanical properties.

One final point to remember:

In aerospace applications, tensile properties can take precedence when there is a conflict between hardness and tensile results. Applicable specifications may state that parts should not be rejected solely on the basis of hardness when the required tensile properties are acceptable, or that tensile testing is the deciding factor when a discrepancy exists between tensile and hardness results.

The Bottom Line

A hardness tester can be properly calibrated and still produce a result that does not tell the whole story. The test method, specimen geometry, surface condition, material, and applicable specification all matter.

Before accepting a hardness reading, don’t just ask, “Is the tester calibrated?â€�

Ask the more important question:

“Does the test I am performing truly represent the part I am evaluating?�

And featured in Aerospace Manufacturing and Design Magazine:

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Our sales and marketing leaders from all seven 51ÁÔÆæ commercial heat-treating locations recently gathered near our Souderton, PA facility for our 8th Annual Sales & Marketing Summit.

From refining sales forecasts and sharing updates on cutting-edge processes to aligning on our core strategy for the year ahead, this team is always looking for new ways to elevate our service. Plus, we wrapped up a productive week with some friendly competition at Topgolf!

Reach out to our team today to discuss your next heat treating challenge!

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Scanning Electron Microscopy (SEM) with Energy Dispersive Spectroscopy (EDS) is an invaluable tool in examining surface anomalies in vacuum heat-treated metal parts. Mike Johnson, 51ÁÔÆæ of Western PA’s Sales Director, explains how this tool can answer questions and solve complex problems.

1. What is a Scanning Electron Microscope (SEM)?

A Scanning Electron Microscope is a fine tool that uses a focused beam of electrons to examine a material’s surface. When the electrons interact with the sample, they produce signals that are detected and analyzed. These signals reveal detailed information about surface features and chemical composition, making SEM a highly effective tool for microscopic evaluation.

2. My medical component shows spotting after vacuum heat treatment—how can SEM help identify the root cause?

SEM analysis identifies the composition of contaminants within the spots, helping trace their origin. It can reveal whether the issue stems from manufacturing processes—such as machining fluids, cleaning fluids, grinding residue, or metal chips—or from handling contamination like glove fibers or environmental debris.

3. What is the most common source of contamination identified through SEM analysis?

A frequent source of surface contamination is the cleaning process (used) prior to heat treatment. While components may arrive at the heat treater visibly clean, SEM often detects residual cleaning or rinsing agents. These frequently include Chlorine, Calcium, and other residuals commonly found in city water. If aqueous cleaning methods are employed, the final rinse should always be performed with deionized water to avoid this potential contamination. The SEM may also uncover films or deposits caused by cross-contamination when multiple alloys are cleaned in the same system. For instance, analysis of spots on 304 stainless steel components once revealed copper contamination from foreign object debris (FOD). The cause was found to be cross-contamination in a cleaning system shared with copper components.

4. Can the vacuum furnace itself be a source of FOD surface contamination?

Yes. Furnaces may contribute to surface contamination of heat-treated parts. If your heat-treat supplier is equipped with an SEM, this is a sign they understand the science and intricacies of surface contamination, and they have the necessary tool to get to the root cause of the issue, whatever that cause may be.

Foreign object debris and residual contamination can impact the performance and reliability of vacuum heat-treated components. While initial detection may rely on visual inspection, SEM/EDS analysis produces precise compositional analysis for fast and efficient root cause analysis. Please contact me if you are interested in SEM analysis at 51ÁÔÆæ.

Learn more about Scanning Electron Microscopy

And featured in Today’s Medical Developments Magazine:

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Perfect weather, great company, and outstanding partnerships made for an unforgettable day on the course!

51ÁÔÆæ of Western PA recently hosted its 6th Annual Customer Appreciation Golf Outing at the Avalon Field Club at New Castle. Under beautiful blue skies and ideal golfing conditions, customers and the Solar team enjoyed a day of friendly competition, networking, and appreciation.

Thank you to everyone who joined us and for your continued trust and partnership. We truly value the relationships we’ve built over the years and look forward to seeing everyone again at next year’s outing!

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To recognize National Safety Month, 51ÁÔÆæ hosted employee appreciation cookouts at both our Hermitage, Pennsylvania, and Michigan facilities. The events provided an opportunity to bring employees together, enjoy a meal, and reinforce the company’s commitment to workplace safety.

Throughout the month, employees participated in discussions and training focused on heat stress awareness, hydration, and recognizing the signs and symptoms of heat-related illness. As temperatures rise during the summer months, understanding how to protect ourselves and our coworkers becomes increasingly important.

A key message shared during National Safety Month was that safety is not just about protecting yourself—it’s about protecting the people around you. Every employee plays a role in creating a safe workplace by looking out for their fellow team members, speaking up when something doesn’t seem right, and helping ensure everyone returns home safely at the end of each shift.

The cookouts served as a reminder that safety is a shared responsibility and an important part of 51ÁÔÆæ’ culture. We thank all our employees for their commitment to one another and for helping make safety a priority every day.

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Yesterday, employees of 51ÁÔÆæ of Western PA enjoyed an outstanding cross-state MLB rivalry matchup between the Pittsburgh Pirates and the Philadelphia Phillies. The pitching matchup was superb, the weather was beautiful, and the PNC Ballpark atmosphere made for an unforgettable day. Most importantly, it was a great opportunity to relax, connect, and share camaraderie with the best employees in the world!

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This weekend, 51ÁÔÆæ Eastern PA employees and their families enjoyed a fantastic evening together at Coca-Cola Park, home of the Lehigh Valley Iron Pigs!

The night featured a fun-filled Star Wars theme, great baseball, and an exciting fireworks show after the game. Events like these are a great way to celebrate our team and spend quality time with the families who support us every day.

Thank you to everyone who joined us for an unforgettable evening!

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