Over 50 Years Exceeding Customer Expectations

An ISO-9001: 2015 Company

Experts in the Industry

You are experts in your industry, and we are experts in ours. Together, we can create custom solutions to meet your goals, budget, and expectations.

Client Consultations

Our expert client consultations produce specialty pieces. No matter how unique the application, we go straight from sketch to three-dimensional solution.

Huge Inventory

Our huge inventory of raw materials, grades, shapes, and sizes allows us to respond quickly to customer demands, so that we can begin machining your product immediately.

Recycle With Us

Put some green in your pocket by going green with your obsolete carbon and graphite materials! Recycle with us, and you will reduce your liability and your ecological footprint.

Carbon and Graphite Machining and Recycling Facility - Semco Carbon

Custom Carbon & Graphite Machining

Fifty Years of Experience

Our custom carbon and graphite machining capabilities are engineered from the ground up with our client's budget, goals, and expectations in mind. No matter the tolerance, no matter the finish, no matter how specific your need, our years of experience coupled with the most advanced machining resources will keep your organization humming with minimal delay. We aren’t just experts in carbon and graphite machining—we’re also experts in client consultation and collaboration. We’re in the business of creating solutions, no matter how unique the problem.

Carbon & Graphite Material Recycling

We’ll purchase your obsolete carbon and graphite materials for reclamation or proper disposal. Less waste in the landfill, more green in your pocket — just the kind of win-win solution we’re in the business of creating.

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Experience. Knowledge. Service.

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Custom Carbon & Graphite Machining

27 Jul

What is Graphite?

What is Graphite And Where Does Graphite Come From?We’ve written a lot in this blog about our primary material, graphite. So what is graphite? The word graphite comes from the Greek word graphein, which means "write" (due to it's use as pencil lead). As for the molecular structure, Graphite is made from carbon atoms, which have four valence electrons. While natural graphite occurs primarily in metamorphic rock mined in many countries from South America to Eastern Asia, we want to clarify that when we talk about graphite in most industrial applications, we are discussing synthetic graphite (so this is the...

14 Jul

Ohio Safety Grant

Over the last few months, safety has been on everyone’s mind. From going to the store to working around others, most of us have considered our personal safety and the safety of those we come into contact with even more than we normally do. While Semco has done an exemplary job protecting our employees during the pandemic, the coronavirus is not the only danger to our employees that we have been thinking about. As a company that prides itself on its safety consciousness, we continue to look for areas of improvement within our graphite machining shop. Our employees’ safety is...

02 Jul

Quality Manager Position-Returning to the Roots

While time has seemed to stand still for much of the last few months, changes are still occurring. Semco’s Quality Manager for the past 5 years, Lee Dohanos, is retiring this month. After over 40 years working in the graphite manufacturing industry, and 5 years contributing his precision graphite expertise to our organization, he is embarking on a new chapter in his life— a well-earned retirement. Lee plans to pursue long-held passions, which means he will be spending a lot more time outdoors. Lee especially loves kayaking and is an avid hiker. Together with his wife, he also plans to...