C260 is the 70 % copper / 30 % zinc 'cartridge brass' alloy. It cold-forms beautifully, takes high polish, and is widely available in sheet, strip, and rod. Lower machinability than free-cutting C360, but suitable for stamping, drawing, and decorative work.
Mechanical and physical properties
| Property | Value |
|---|---|
| Tensile strength | 303 MPa |
| Yield strength | 76 MPa |
| Elongation at break | 66% |
| Density | 8.53 g/cm³ |
| Modulus | 110 GPa |
| Hardness | ~55 HRB |
| Machinability rating | 30 (vs C360 = 100) |
Typical applications
- Cartridge cases and ammunition components.
- Decorative trim, signage, and hardware.
- Cold-drawn tubes and pipe fittings.
- Architectural panels and fasteners.
Related materials
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