CW602N
CW602N, a machining brass designed to resist dezincification, excels in applications involving warm, acidic waters. It successfully meets the dezincification test criteria outlined in ISO 6509. When producing hot-stamped components, it’s advisable to opt for C35330 due to its superior hot-working properties. To ensure dezincification resistance, consider a heat treatment after hot working when necessary.
CHEMICAL COMPOSITION
| Elements | Min Value | Max Value |
| Cu | 61.00 | 63.00 |
| Pb | 1.70 | 2.80 |
| Sn | – | 0.10 |
| Fe | – | 0.10 |
| As | 0.02 | 0.15 |
| Al | – | 0.05 |
| Mn | – | 0.10 |
| Ni | – | 0.30 |
| Total Others | – | 0.20 |
| Zn | Remainder | |
MECHANICAL PROPERTIES ACCORDING TO EN12164 (AS PER TEMPER R320)
| Range (mm) | From | To | UTS Min (N/mm²) | PS Min (N/mm²) | Elongation Min (%) | Hardness Min | Hardness Max |
| Round (Dia) | 6 | 40 | 350 | 150 | 25 | 90 | – |
| Hex (A/F) | 5 | 35 | 350 | 150 | 25 | 90 | – |
| Square (A/F) | 5 | 35 | 350 | 150 | 25 | 90 | – |
| PHYSICAL PROPERTIES | |
| Melting Point | 910°C |
| Density | 8.43 g/cm³ |
| Specific Heat | 377 |
| Thermal conductivity (20°C) | 117 W/m°K |
| Thermal expansion coefficient (20-200°C) | 20.7 x 10-6 per °C |
| Electrical conductivity | 26 % IACS |
| Electrical Resistivity | 0.066 ohm mm²/m |
| Modulus of Elasticity | 106 KN/mm² |
| FABRICATION PROPERTIES | |
| Technique | Suitability |
| Hot Working Temperature Range | 800-850°C |
| Hot Formability | Very good |
| Cold Formability | Good |
| Machinability rating (free cutting brass = 100) | 75 % |
| Annealing Temp. Range | 450-650°C |
| Stress Relieving Temp. Range | 250-350°C |
| Soldering | Excellent |
| Brazing | Good |
| Oxy-acetylene welding | Not recommended |
| Gas-shielded arc welding | Not recommended |
| Resistance welding | Not recommended |
