Brass C260
Brass C260 (Cartridge Brass) – Best Cold-Work Formability for Deep Drawing Operations
Brass C260, known as cartridge brass (70% Cu / 30% Zn), is the most formable of all brass alloys and the benchmark for cold-working and deep drawing operations. Originally developed for ammunition cartridge casings, its exceptional cold workability, strength, and corrosion resistance make it the standard brass for complex formed and drawn parts.
Key Properties
- Tensile Strength: 330 MPa (annealed)
- Elongation: 65% (annealed) — best in brass family
- Formability: Excellent — benchmark for deep drawing
- Composition: 70% Cu / 30% Zn
- Density: 8.53 g/cm³
- Standards: ASTM B19 / CDA 260
Common Applications
Ammunition cartridge casings, deep drawn shells and cups, radiator cores, springs, snap fasteners, eyelets, flashlight shells, and any complex-formed sheet metal component requiring maximum ductility.
Material properties
| Material name | Brass C260 |
|---|---|
| Type | Brass & Bronze |
| Standard code | ASTM B19 / CDA 260 |
| Tensile strength (MPa) | 330 |
| Yield strength (MPa) | 110 |
| Fatigue strength (MPa) | 110 |
| Elongation (%) | 65 |
| Hardness (Brinell) | 65 |
| Density (g/cm³) | 8.53 |
| Electrical resistivity (µΩ·in) | 6.2 |
| Thermal conductivity (W/m·K) | 120 |
| Melting range (°C) | 915–955 |
| Weldability | Fair |
| Formability | Excellent |
| Shear modulus | 37 |
| Industry code | brass_260 |