1-800-227-2667 sales@larpen.com

North American Leader and World-Wide Supplier of Graphite and Carbon AdditivesSince 1962

About Our Products


GRAPH-HEX® covers a complete range of recarburizers used throughout the Iron and Steel industry.

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Pet Coke

Larpen Metallurgical Service supplies low to medium sulfur petroleum cokes ranging in sulfur from 0.35% – 4.0%.

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Silicon Carbide

Larpen Metallurgical Service is a distributor of Carbolon MA 90% silicon carbide from Washington Mills.

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About Larpen Metallurgical Service

Larpen Metallurgical Service is the industry expert in designing and adapting graphite and carbon additives for the foundry and steel industry. Established in 1962, we have been delivering unparalleled expertise in service, quality, consistency, and flexibility, ensuring our customers receive the highest quality products tailored to their individual needs.

Our Products Meet Your Needs

Explore our extensive range of GRAPH-HEX products and other high quality graphite and carbon additives, each designed to meet the diverse needs of the foundry and steel industry. Our advanced processes and commitment to quality allow us to offer the most economical and reliable products in the market.

Today, Larpen is the market leader of developing and supplying high quality products to the metallurgical industry in North America. Our company produces, sources, and delivers a wide range of graphite and carbon products. With manufacturing and warehousing facilities covering strategic geographic locations through out North America, it enables us to provide the most consistent and reliable deliveries to foundries and steel mills. It is Larpen’s goal to provide 24/7 customer service and 100% on time deliveries to our customers’ worldwide.

Elevate Your Operations with Larpen’s Advanced Graphite Solutions!

Discover the unparalleled efficiency and quality of our GRAPH-HEX products and other graphite and carbon additives, meticulously designed to optimize your foundry and steel processes.

Empower Your Industry with High-Quality Graphite and Carbon Additives!