Copper alloys for free machining, hollow rod
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Copper alloys for free machining, hollow rod
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EUROPEAN MATERIAL DESIGNATION
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CuZn36Pb2As
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CuZn36Pb3
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CuZn37Pb2
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CuZn38Pb2
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CuZn39Pb2
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CuZn39Pb3
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CuZn40Pb2
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CuZn40Mn1Pb1AlFeSn
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CuZn37Mn3Al2Pb1Si
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EUROPEAN CODE
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CW602N
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CW603N
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CW606N
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CW608N
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CW612N
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CW614N
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CW617N
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CW721R
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CW713R
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Nominal Composition %
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Cu
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61.5/62.2
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60.5
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61.5
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60.5
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59.5
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57.5
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57.5
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57.5
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57.8
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Pb
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2.0
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3.0
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2.0
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1.8
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2.0
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3.0
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2.0
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1.2
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0.6
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Al
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–
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–
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–
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–
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–
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–
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–
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1.0
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1.5
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Fe
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–
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–
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–
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–
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–
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–
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–
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0.6
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0.4
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Mn
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–
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–
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–
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–
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–
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–
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–
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1.2
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1.9
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Ni
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–
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–
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–
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–
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–
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–
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–
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–
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–
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Si
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–
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–
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–
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–
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–
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–
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–
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–
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0.5
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Sn
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–
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–
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–
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–
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–
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–
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–
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0.6
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–
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Zn
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remainder
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remainder
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remainder
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remainder
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remainder
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remainder
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remainder
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remainder
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remainder
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Others
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0.1 As / 0.06 As
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–
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–
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–
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–
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–
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–
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–
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–
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Nearest national equivalent:
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France (NF A51-105)
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–
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CuZn36Pb3
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–
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–
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CuZn39Pb2
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CuZn40Pb3
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–
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–
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–
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Germany (DIN 17660)
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–
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CuZn36Pb3
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–
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CuZn38Pb1.5
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CuZn39Pb2
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CuZn39Pb3
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CuZn40Pb2
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–
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CuZn40Al2
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U.K. BS (2872 / BS 2874)
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CZ132
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CZ124
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CZ131
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CZ128
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CZ128
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CZ121Pb3
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CZ122
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CZ114
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CZ135
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U.S.A. (UNS)
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C35330
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C36000
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C35300
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–
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–
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C38500
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C37710
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–
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C67420
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Manufacturing:
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Machinability Index (%)*
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70
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95
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70
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75
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80
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100
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90
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75
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50
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Cold Working
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GOOD
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MODERATE/
GOOD |
GOOD
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MODERATE
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MODERATE
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POOR/ MODERATE
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MODERATE
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POOR
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POOR
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Hot Working
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MODERATE
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MODERATE
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MODERATE
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MODERATE
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GOOD
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GOOD
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VERY GOOD
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GOOD
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GOOD
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Hot Working Temperature (°C)
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700-800
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700-800
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700-800
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700-800
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700-800
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700-800
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625-750
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–
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–
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Typical mechanical properties
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Tensile strength (N/mm²)
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350-450
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450-550
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550-650
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Elongation
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20-30
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15-25
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10-20
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Hardness HVIO
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100-150
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130-180
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160-220
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Typical physical properties
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Density (kg/dm³)
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8.43
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8.44
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8.42
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8.43
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8.42
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8.47
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8.42
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8.36
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8.27
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Modulus of elasticity (kN/mm²)
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98-100
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95-97
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Melting Range (°C)
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880-910
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880-940
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Co-efficient of linear expansion x10-6K (20-300°C)
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20.6-21.0
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20
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Thermal conductivity (W/mK)
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115-120
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88
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Electrical resistivity (mWm)
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0.064-0.066
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0.096-0.110
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Electrical conductivity (%IACS)
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26-27
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15-18
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APPLICATIONS
& CHARACTERISTICS |
Dezincification
resistant brass Available with 0.1-0.06 As |
American free machining and semi riveting brass
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Riveting and turning brass
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General purpose
machining brass for moderate bending or riveting |
General purpose machining brass for limited bending or riveting
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The standard high speed free machining brass
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The standard Hot forging brass
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General purpose high tensile brass
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High strength manganese brass with silicon for enhanced wear resistance. Uses include gear -box parts and bearings.
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Relevant european standards
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EN 12165: Wrought and unwrought forging stock
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*
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–
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–
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*
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*
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*
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*
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*
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*
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EN 12168: Hollow rod for free machining purposes
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*
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*
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*
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*
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*
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*
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*
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*
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*
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* CuZnPb3 (CW614N) = 100%
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(Source: www.bolidenbrass.com)
Ramo AB ansvarar ej för eventuella felaktigheter i ovanstående information.
Ramo AB takes no responsibility in the eventuality of errors in the above information.