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PRODUCT DATA of CDA 687
MaterialCDA 687
General InformationTypical data from standards handbook of copper and copper alloys (CDA inc) @ Room Temperature
Chemical CompositionCu-2Al-0.05As-21Zn
EXPERIENCE IN PRACTICE
Equivalent Designations C68700; CuZn20Al2As; CW702R; 2.0460; CZ110; Cu-Zn22Al2; CDA687; aluminium brass arsenical
PHYSICAL PROPERTIES
Specific Gravity8.33
ELASTIC PROPERTIES
Tensile Modulus110 GPa
Shear Modulus41.2 GPa
ELECTRICAL PROPERTIES
Electrical Volume Resistivity7.5e-8 ohm.m
THERMAL PROPERTIES
Thermal Conductivity100 W/m.K
Thermal Expansion Coefficient18.5 µstrain/°C
Melting Range935 to 970 °C
Specific Heat0.377 J/g.K
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
Stress Corrosion StatusLow Resistance to SCC: Table 3
Remark: Not for primary structural items
Remark: in the 10% and 40% cold rolled condition only
Remark: acc. to ECSS-Q-ST-70-36C
Data Quality: Design Data