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Titanium clubs can cause golf course fires, UCI study finds


Sparks fly when head hits rocks in the rough, potentially igniting brush

Titanium alloy golf clubs can cause dangerous wildfires, according to UC Irvine scientists. When a club coated with the lightweight metal is swung and strikes a rock, it creates sparks that can heat to more than 3,000 degrees Fahrenheit for long enough to ignite dry foliage, according to findings published recently in the peer-reviewed journal Fire and Materials.

Orange County, Calif., fire investigators asked UC Irvine to determine whether such clubs could have caused blazes at Shady Canyon Golf Course in Irvine and Arroyo Trabuco Golf Club in Mission Viejo a few years ago.

“One fire almost reached homes before they stopped it. This unintended hazard could potentially lead to someone’s death,” said chemical engineering & materials science professor James Earthman, lead author on the paper. “A very real danger exists, particularly in the Southwest, as long as certain golf clubs remain in use.”

He suspected that the titanium heads on some clubs designed for use in “the rough” – natural areas off irrigated fairways – could be to blame for the fires. Most golf clubs have stainless steel heads. However, a significant number being manufactured or in circulation have a titanium alloy component in the head. Such alloys are 40 percent lighter, which can make the club easier to swing, including when chipping errant balls out of tough spots. In Southern California, those spots are often in flammable scrub brush.

The researchers painstakingly re-created in the lab course conditions on the days of the fires. Using high-speed video cameras and powerful scanning electron microscope analysis, they found that when titanium clubs were abraded by striking or grazing hard surfaces, intensely hot sparks flew out of them. In contrast, when standard stainless steel clubs were used, there was no reaction.

“Rocks are often embedded in the ground in these rough areas of dry foliage,” Earthman noted. “When the club strikes a ball, nearby rocks can tear particles of titanium from the sole of the head. Bits of the particle surfaces will react violently with oxygen or nitrogen in the air, and a tremendous amount of heat is produced. The foliage ignites in flames.”

Co-authors on the paper are Janahan Arulmoli, Bryant Vu, Ming-Je Sung and Farghalli Mohamed, also from UC Irvine.

About the University of California, Irvine: Located in coastal Orange County, near a thriving high-tech hub in one of the nation’s safest cities, UC Irvine was founded in 1965. One of only 62 members of the Association of American Universities, it’s ranked first among U.S. universities under 50 years old by the London-based Times Higher Education. The campus has produced three Nobel laureates and is known for its academic achievement, premier research, innovation and anteater mascot. Led by Chancellor Michael Drake since 2005, UC Irvine has more than 28,000 students and offers 192 degree programs. It’s Orange County’s second-largest employer, contributing $4.3 billion annually to the local economy.

Media access: UC Irvine maintains an online directory of faculty available as experts to the media at Radio programs/stations may, for a fee, use an on-campus ISDN line to interview UC Irvine faculty and experts, subject to availability and university approval. For more UC Irvine news, visit Additional resources for journalists may be found at

Janet Wilson | EurekAlert!
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