CuZn39Pb3易切削鉛黃銅合金是應用較廣的鉛黃銅，可切削性好，有良好的力學性能，能承受冷、熱壓力加工，易焊接，纖焊好，對一般腐蝕有良好的穩定性，但有腐蝕破裂傾向，主要用于空調閥門、五金機械等。
Material CuZn39Pb3, mat. No. CW614N, is an unhardenable wrought alloy. to the comparable make CuZn39Pb3, mat. No. 2.0401 acc. to DIN 17660 : 1983-12 applies: High hardness and strength parameter are achievable by cold forming only. Thermal and electrical conductivity are lower than for unleaded brass of the same Zn-content. Machinability is improved by Pb-addition. Corrosion resistance to water, several saline solutions and organic liquids is also lower than for unleaded alloys of the same zinc-content. Processing properties: warm forming: very good cold forming: unfavorable machinability: very good hard soldering: moderately soft soldering: very good TIG-welding: unfavorable burnishing: very good Application: Main alloy of the brass materials for machining on automats. Use for all types of form turning parts, in precision engineering as well as in watch and electrical industry.
Chemical Composition
Spec: EN 12164:2011
CuZn39Pb3
| Chemical Element | % Present |
|---|
| Copper (Cu) | 57.00 - 59.00 |
| Lead (Pb) | 2.50 - 3.50 |
| Aluminium (Al) | 0.0 - 0.05 |
| Iron (Fe) | 0.0 - 0.30 |
| Nickel (Ni) | 0.0 - 0.30 |
| Others (Total) | 0.0 - 0.20 |
| Tin (Sn) | 0.0 - 0.30 |
| Zinc (Zn) | Balance |
Properties
| Physical Property | Value |
|---|
| Density | 8.47 g/cm3 |
| Melting Point | 875 °C |
| Thermal Expansion | 20.9 x10^-6 /K |
| Modulus of Elasticity | 97 GPa |
| Thermal Conductivity | 123 W/m.K |
| Electrical Resistivity | 0.062 x10^-6 Ω .m |
Spec: EN 12164:2011
Bar - 6mm to 80mm Dia. / 5mm to 60mm AF
| Mechanical Property | Value |
|---|
| Proof Stress | 230-350 MPa |
| Tensile Strength | 360-500 MPa |
| Hardness Brinell | 90 to 160 HB |
| Elongation A | 20 to 5 %
|
