| Alloy Name | |||||||||||
| UNS | IS/ISO | DIN CEN/TS 13388 | KMW | ||||||||
| C28000 | CuZn40 | CW617N | CuZn40 | ||||||||
| Chemical Composition | (% By Weight) |
| Cu | 58.5-62.0% |
| Pb | 0.015 0.045 % |
| Fe | ¡Ü 0.1% |
| Zn | Reminder % |
| Total Impurity | 0.75 % |
| Main Applications | |
| Industrial | Locks, Metal Fittings, Keys. |
| Architecture | Decoration, Hardware, Door Frames, Large Architectural Trim, Large sheet. |
| Physical Properties Typical values in annealed temper at 20°C | ||
| Density | 8.41 | g/cm3 |
| Thermal expansion coefficient −191 .. 16 / 0 .. 300°C | 20.3 / 21.0 | 10-6/K/10-6/K |
| Specific heat capacity | 0.375 | J/(g.K) |
| Thermal conductivity | 117 | W/(m·K) |
| Electrical conductivity (1 MS/m = 1m/(0 mm2)) | ;Y 15 | MS/M |
| Electrical conductivity (IACS) | 26 | % |
| Thermal coefficient of electrical resistance (0 .. 200 C) | 1.7 | 10-3/K |
| Modulus of elasticity (1GPa = 1 kN/mm2) cold formed | 99.... 115 / 102 | GPA |
| Mechanical Properties (EN 1652) | ||||
| Temper | Tensile Strength Rm MPa (N/mm2) |
Yield Strength Rp0.2 MPa (N/mm2) |
Elongation Minimum A50mm % | Hardness HV |
| O (SOFT) | 275 Min | - | 35 Min | 85 Max |
| HB (half Hard) | 420 Min | - | 15 Min | 100 Min |
| HD (Hard) | 490 Min | - | 5 min | 125 Min |
| HE ( Extra Hard) | 525 Min | - | - | 165 Min |
Cold Forming Properties Max. 25% between annealings
Hot Forming Properties at 650 .. 800°C
Machinability (Rating 40)
Electroplating Properties
Hot Tinning Properties
Soft Soldering, Brazing
Resistance Welding
Fair
Excellent
Fair
Excellent
Excellent
Excellent
Good