CW510L

CW510L is a lead-free material that, despite its lack of lead, boasts excellent machining capabilities due to its structural composition. This makes CW510L a cost-effective alternative to traditional lead-containing machining brass, particularly in scenarios where stringent demands for mechanical properties and corrosion resistance are not a primary concern.

CHEMICAL COMPOSITION
Elements Min (%) Max (%)
Cu 57.00 59.00
Pb 0.20
Fe 0.30
Sn 0.30
Ni 0.30
Al 0.05
Total Others 0.20
Zn Remainder
MECHANICAL PROPERTIES ACCORDING TO EN12164 CW510L (AS PER TEMPER 430)
Range (mm) From To UTS Min (N/mm²) PS Min (N/mm²) Elongation Min (%) Hardness Min Hardness Max
Round (Dia) 2 40 430 220 10
Hex (A/F) 2 35 430 220 10
Square (A/F) 2 35 430 220 10
PHYSICAL PROPERTIES
Electrical conductivity %IACS 31
Thermal conductivity W/(m·K) 139
Thermal expansion coefficient (0–300 °C) 10-6 /K 21.70
Density 8.41 g/cm3
Modulus of elasticity 107 Gpa
FABRICATION PROPERTIES 
Machinability (CuZn39Pb3 = 100 %)   60%
Capacity for being cold worked poor
Capacity for being hot worked Excellent
Resistance welding (butt weld) Fair
Inert gas shielded arc welding Fair
Gas welding Fair
Hard soldering Excellent
Soft soldering Excellent
Melting range 870–900 °C
650–750 °C 650–750 °C
450–550 °C 450–550 °C
Thermal stress relieving (1–3 h) 250–350 °C

CW510L

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