About Montana Advanced Composites

MAC is a privately held, 100% US-owned and operated business that develops and manufactures advanced hot-melt prepregs, and ancillary composite materials. Located on the doorstep of Yellowstone National Park in Manhattan, Montana, MAC’s custom-built manufacturing facility houses state-of-the-art prepreg lines with capacity for mid-market volumes and the ability to scale to high-rate production.

100%
US Owned & Operated
50+
Years of Excellence
Material Possibilities
Partnership-driven service built around your needs.

We focus on being easy to work with and highly collaborative - all while delivering meaningful results for our partners.

Responsive

We focus on being easy to work with – prioritizing responsiveness and superior service.

Reliable

We provide consistently high-quality materials you can count on and deliver in lead times that work for you.

Collaborative

We thrive on collaborating throughout the development process to ensure our materials help create value for our customers.

Excellence in Composites.

Our sister organization, IDI Composites International (IDI) is the premier global formulator and manufacturer of thermoset sheet molding compounds (SMC) and bulk molding compounds BMC), and has over half a century of large-scale thermoset composite manufacturing experience. With a global footprint, the company has substantial R&D resources and best-in-class chemical engineering and manufacturing operations. IDI has wholly owned manufacturing facilities in the United States, Puerto Rico, Mexico, France, and China.

Interested in a Career in Composites?

Join our Team! At MAC, we're always on the look-out for talented individuals who are interested in collaborative and creative work environment. If that sounds like you, introduce yourself with an email to careers@montanacomposites.com.