Magna International Logo
1. Magna International
Aurora, Ontario, Canada | Founded 1957
Magna International stands as the world's preeminent supplier of large-scale stamped body structures, particularly for EV platforms. The company's COSMA division operates 37 manufacturing facilities across multiple continents with 12 dedicated product development centers. Their proprietary OPTiForm deep draw process enables production of ultra-large, single-piece stampings that reduce vehicle weight and assembly complexity -- critical for EV underbody structures where structural efficiency directly impacts battery range.
Key Capabilities:
- Mega-stamping for body-in-white structures and EV platforms
- Deep draw forming up to 3,000+ tonnes capacity
- Lightweight aluminum and advanced high-strength steel stamping
- Assembly integration services for major OEMs (BMW, Ford, GM, Toyota)
Gestamp Logo
2. Gestamp
Madrid, Spain | Founded 1997
Gestamp has established itself as the global leader in hot-stamped component manufacturing, employing over 44,484 professionals across 96 manufacturing plants and 12 R&D centers in 27 countries. Hot stamping technology allows Gestamp to produce exceptionally strong, lightweight components at scale -- essential for modern vehicle safety structures, particularly in EV architectures where battery packs require enhanced structural protection with tensile strengths exceeding 1,500 MPa.
Key Capabilities:
- World leader in hot-stamped parts with Class A finishing
- Cold stamping and hydroforming technologies
- Body-in-white systems integration for automotive OEMs
- Battery box and EV structural component manufacturing
Martinrea International Logo
3. Martinrea International
Vaughan, Ontario, Canada | Founded 2001
Martinrea International has rapidly grown into a significant global tier-1 supplier specializing in heavy stamping operations with industrial presses up to 3,000-tonne capacity. A pivotal development in January 2026 was Martinrea's strategic acquisition of PolyML, a machine learning company specializing in manufacturing optimization, positioning Martinrea at the forefront of Industry 4.0 adoption with predictive quality control across its global network.
Key Capabilities:
- Heavy stamping with 3,000-tonne press capacity
- Aluminum stamping and forming for lightweight vehicles
- Laser-welded blanks manufacturing for complex geometries
- Machine learning-driven quality assurance (PolyML acquisition)
Shiloh Industries Logo
4. Shiloh Industries (DURA-Shiloh)
Auburn Hills, Michigan | Market Share: 10-14% domestic
Shiloh Industries has carved a niche in specialized blank products and coil processing for the automotive stamping industry. Their proprietary technologies include Laser-Welded Blanks (LWB) for precision welding of dissimilar steel grades, custom coil processing for optimal stamping performance, and ShilohCore Laminate multi-layer material systems that achieve weight reductions up to 30% compared to conventional single-material approaches while maintaining structural performance.
Key Capabilities:
- Laser-welded blanks (LWB) for dissimilar steel grade welding
- Custom coil processing for optimal stamping performance
- ShilohCore Laminate multi-layer lightweight systems
- Chassis, door structures, roof rails, and cross-member production
AAM Logo
5. American Axle & Manufacturing (AAM)
Detroit, Michigan | Founded 1994
American Axle & Manufacturing brings over 30 years of metal forming expertise to the automotive industry. While known for driveline systems, AAM's metal forming division produces critical stamped and formed components using both cold and hot forming technologies. Their integrated approach enables innovative solutions for powertrain applications across the electrification spectrum -- from traditional internal combustion engines to hybrid and full electric powertrains.
Key Capabilities:
- Cold and hot form tooling for diverse applications
- Connecting rods, engine components, and driveline parts
- Variable valve timing systems and precision components
- EV powertrain supporting structures and electrification solutions
How to Choose the Right Metal Stamping Partner
Selecting the right stamping supplier depends on your specific manufacturing requirements. Consider these factors:
Stamping Technology
Need hot stamping? Gestamp leads globally. Mega-stamping for EV bodies? Magna's COSMA division is unmatched. Heavy stamping? Martinrea handles up to 3,000 tonnes.
Material Innovation
Need lightweighting? Shiloh's laser-welded blanks achieve 30% weight reduction. Aluminum stamping? Martinrea specializes in lightweight forming.
Application Focus
Body-in-white structures? Magna and Gestamp dominate. Powertrain components? AAM's metal forming division is purpose-built. Blank products? Shiloh is the specialist.
Global Scale
Need worldwide supply? Gestamp operates 96 plants in 27 countries. AAM covers 85 facilities across 18 countries. Magna's COSMA spans multiple continents.