CATEGORY |
ASTM | BS | EN | JIS | DIN | ISO | IS |
| Yellow Brass | C28500 | Cw510L | Cuzn42 | ||||
| Muntz Metal | C28000 | CZ109 | CW509L | C2801 | CuZn40 | 1634-CuZn40 |
Founded and patented by English businessman George F. Muntz in 1832, Muntz Metal (C28000 or C280) is primarily used in architectural applications owing to its distinctive color. It is highly plastic metal at red heat that makes it ideal for pressing, stamping and hot forging. The metal alloy is also appreciated for high electrical and thermal conductivity, high ductility, high impact strength, good creep resistance, ease of welding, and low volatility under high vacuum.
Application Areas:
| Specification : | ||
| 60/40 Brass |
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Chemical Composition
| (%max., unless shown as range or min.) | ||||
| Cu | Fe | Pb | Zn | |
| Min./Max. | 59.0-63.0 | 80 – 83.0 | 0.2 | Rem. |
| Nominal | 60 | – | – | 40 |
| Physical Properties | ||
| Product Property | US Customary | Metric |
| Coefficient of Thermal Expansion | 11.6 ·10-6 per oF (68-572 F) | 20.9 · 10 6? per °C (20-300 C) |
| Density | 0.303 lb/in3 @ 68 F | 8.39 gm/cm3 @ 20 C |
| Electrical Conductivity | 28 %IACS @ 68 F | 0.164 MegaSiemens/cm @ 20 C |
| Electrical Resistivity | 37.0 ohms-cmil/ft @ 68 F | 6.15 microhm-cm @ 20 C |
| Melting Point Liquid US | 1660 F | 904 C |
| Melting Point Solid US | 1650 F | 899 C |
| Modulas of Elasticity in Tension | 15000 ksi | 103400 MPa |
| Modulas of Rigidity | 5600 ksi | 38610 MPa |
| Specific Gravity | 8.39 | 8.39 |
| Specific Heat Capacity | 0.09 Btu/lb/°F @ 68 F | 377.1 J/kg · °K at 293 K |
| Thermal Conductivity | 71.0 Btu · ft/(hr · ft2 ·°F) @ 68 F | 1229.9 W/m · °K at 20 C |
