KEMİ Defense operates as the advanced materials and defense technology division of KEMI GROUP. We develop and manufacture GMCS (Gold-Metal Clad Steel) bimetallic composite materials engineered specifically for defense industry applications.
Through Concurrent Engineering, we develop special formulas and material recipes tailored for specific defense projects. Our raw material flow is fully integrated into the quality processes of prime contractors, ensuring a "Zero Risk" policy in defense industry supply security.
GMCS TECHNOLOGY & ADVANTAGES
Atomic-level interlocking of metals under high pressure and controlled heat. It is not a coating or paint — the material itself is bimetal.
- Rolling and high tensile strength
- Zero risk of delamination
- Homogeneous metallurgical structure
Double advantage in a single material. More durable than pure brass, with lower friction operation capability than pure steel.
- Steel Core: Maximum structural strength
- Brass Surface: Excellent lubrication effect
- Barrel life protection
- Thermal stability against overheating
Flow Forming Die and Mass Production optimization using Interstitial-Free Steel Technology.
- IF Steel: Maximum ductility & formability
- Zero tearing risk in multi-stage forming
- H70 Brass: Resistant to cold forming
- Homogeneous hardness distribution
APPLICATION AREAS
Engineered for extreme performance and structural integrity under high thermal loads in large-caliber systems.
- 155mm howitzer and tank ammunition — strength-oriented structure
- H90 gilding metal surface — minimizes barrel wear
- Rocket motor nozzles and combustion chamber housings
Supported calibers: 5.56×45mm, 7.62×39mm, 7.62×51mm, 9×19mm, 12.7×99mm and additional configurations.
- Uninterrupted performance in high-speed production lines
- Soft-transition molecular structure extends die life
- Expands during firing for barrel sealing, returns for easy ejection
- Same ballistic character as pure brass, higher body strength
MATERIAL SPECS & PORTFOLIO
| Material Specification | Thickness Range | Hardness (HV) | Tensile Strength | Elongation (EL) |
|---|---|---|---|---|
| CuZn10 + F11 + CuZn10 (H90+F11+H90) | 0.30 – 3.00 mm | 100 – 120 | 265 – 365 MPa | ≥ 43% |
| CuZn10 + F18 + CuZn10 (H90+F18+H90) | 1.00 – 4.00 mm | 105 – 125 | 305 – 395 MPa | ≥ 37% |
CUPS PORTFOLIO
| Product Type | Specification | Lot Quantities (Ton) |
|---|---|---|
| Cups (H90 Clad Steel) | Produced to client specifications | 25 / 500 / 501–1000 / 1001–2000 |
| Cups (H70 Clad Steel) | Produced to client specifications | 25 / 500 / 501–1000 / 1001–2000 |
| Steel Cups (F18) | Produced to client specifications | 25 / 500 / 501–1000 / 1001–2000 |
| Brass H70 Cups (CuZn30) | Produced to client specifications | 25 / 500 / 501–1000 / 1001–2000 |
DEFENSE TEAM
CONTACT
Bursa, Turkey