Solar Atmospheres Successfully Hardens Massive H13 Extrusion Dies

Hermitage PA, January 30, 2023 – Solar Atmospheres of Western PA successfully vacuum heat treated two massive H13 extrusion dies at their Hermitage PA facility. Their newest high performing Solar Manufacturing 10-Bar 600 Horsepower high pressure gas quench vacuum furnace was able to fully harden two huge H13 extrusion dies in successive cycles. The dies, received from two different customers located in Ohio, resulted in an as-quenched hardness of HRC 50-52 using nitrogen as the quench gas. The hollow die was 30” OD x 15” ID x 103” long and weighed 16,000 pounds. The solid die, belonging to a different customer, was 34” OD x 64” long and weighed 14,000 pounds. Post-quench each component was triple air tempered resulting in a final hardness of HRC 46-48.

Director of Sales, Mike Johnson stated, “This 10-bar 600 HP high pressure vacuum furnace allows Solar to attain cooling rates that are inconceivable. Solar is always willing to accept the challenge of vacuum heat treating and brazing any job no matter the size.”

For additional information about Solar Atmospheres, contact Mike Johnson at 1-855-934-3284 x2223, email at, and visit us at

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