Advanced Materials For Land, Sea, Sky & Stars

We develop and manufacture hot-melt prepregs and other composite materials for aerospace, defense, marine, sporting goods, and industrial applications.

Prepreg
MAC’s portfolio of advanced hot-melt prepregs ranges from standard epoxy systems to specialty resins, unidirectional tapes to fabric reinforcements, film adhesives to cured laminates.
100% US Owned & Operated
MAC is a privately held, 100% US-owned and operated manufacturer of advanced hot-melt prepregs and other composite materials.
Our Capabilities
With state-of-the-art equipment and an industry-leading engineering and operations team, MAC is ready to help solve any composite material challenge.
Advanced Capabilities
State-of-the-Art Equipment & Material Development
ISO-Certified
Consistent Quality Performance
Easy to Work With
Superior Service & Responsiveness
American Manufactured
100% US-Owned & Operated
Partnership-Driven Performance

MAC develops and manufactures composite prepregs and laminates that help our customers solve design, part, or process challenges. From early development through production, we deliver the responsiveness, quality, and expertise your projects demand.

Flexible Capacity, Built to Scale With You

With a custom-built facility and state-of-the-art prepreg lines, we support mid-market volumes with the ability to scale to high-rate production as your needs grow.

Discover Our Capabilities
Collaboration & Practical Development

We're practical innovators, ready to solve problems and streamline processes. We thrive on collaborating with customers throughout development to ensure the resulting materials create real value.

Explore Our Products
Superior Service & Meaningful Results

We focus on being easy to work with—prioritizing responsiveness and flexibility at every stage. We provide consistently high-quality materials delivered in lead times that work for you.

About Montana Advanced Composites
A Long-Term Commitment

Operating out of Montana, MAC is 100% US-owned and privately held. We offer customers a long-term commitment that will not waiver quarter-to-quarter or year-to-year. And while we offer the speed and agility of a new venture, we draw upon a rich history of composites leadership from our sister organization, IDI Composites International.

100%
US Owned & Operated
50+
Years of Excellence
Material Possibilities
Performance That Outperforms

MAC composite materials are engineered to exceed the limitations of conventional materials, delivering measurable advantages in both performance and durability.

Faster

Advanced composite materials enhance speed and performance in end-use applications, from aerospace components to high-performance racing and marine vessels.

Lighter

Our composite materials deliver significant weight savings compared to metals and traditional materials, without sacrificing strength or durability.

Stronger

Engineered fiber orientation and advanced resin systems deliver exceptional tensile and flexural strength for the most demanding applications.

Stiffer

From quartz to high-modulus carbon fibers, reinforcements ensure our materials maintain shape and resist deflection under load, providing superior dimensional stability.

Tougher

Built to withstand harsh environments and repeated stress cycles, our composites offer excellent impact resistance and extended fatigue life.