CW716R

CW716 is a specialized brass alloy characterized by medium strength, excellent resistance to atmospheric corrosion, and favorable sliding properties. These attributes are achieved through the inclusion of manganese and aluminum as alloying elements. CW716R is typically employed as a standard bearing material in applications with moderate loads within the field of machine construction.

CHEMICAL COMPOSITION
ElementsMin (%)Max (%)
Cu59.0061.50
Pb1.00
Sn0.30
Fe0.10
Al0.301.30
Mn0.601.80
Si0.50
Ni0.60
Total Others0.30
ZnRemainder
MECHANICAL PROPERTIES ACCORDING TO EN12163 CW716R (AS PER TEMPER R440)
Range (mm) From To UTS Min (MPa) PS Min (MPa) Elongation Min (%) Hardness Min Hardness Max
Round (Dia)87544020015
Hex (A/F)86044020015
Square (A/F)86044020015
Rectangle (Thickness)85044020015
PHYSICAL PROPERTIES
Electrical conductivity7.8 %IACS
Thermal conductivity63 W/(m•K)
Thermal expansion coefficient (0–300 °C)21.1 10-6/K
Density8.24 g/cm³
Modulus of elasticity93 Gpa
FABRICATION PROPERTIES
Machinability (CuZn39Pb3 = 100 %)40%
Capacity for being cold workedPoor
Capacity for being hot workedgood
Resistance welding (butt weld)good
Inert gas shielded arc weldingfair
Gas weldingPoor
Hard solderingfair
Soft solderingPoor
Melting range860-910 °C
Hot working600–700 °C
Soft annealing500–650 °C (1–3 hr)
Thermal stress relieving300–430 °C (1-3 hr)

CW716R

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