CuZn40
CW509LMuntz Metal / 60-40 Brass — at the alpha-beta boundary, the strongest common unleaded brass. Good hot workability (extrusion, forging, hot stamping). Poor cold formability vs lower-Zn brasses. Susceptible to dezincification in aggressive waters. Used for architectural extrusions, heat exchanger tubes, condenser plates, and marine hardware. ≈ UNS C28000.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | UNS | USA | UNS C28000 (Muntz Metal) | C28000 | REF |
| 🇪🇺 | EN | Europe | CuZn40 | CW509L | 100% |
Sources: ASTM B111, EN 12163
Mechanical properties — Pro
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Hardness HB | ||
| Elastic Modulus | ||
| Density |
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