UNS C68700 (CW702R) Aluminum Brass
Other
Property Overview
Density8.3g/cm³
Elastic Modulus110GPa
Tensile Strength330MPa
Yield Strength140MPa
Brinell HardnessUnknown
Maximum Service Temperature160°C
Chemical Composition
CU
76 to 79%
AL
1.8 to 2.5%
AS
0.020 to 0.1%
PB
0 to 0.070%
RES.
Residuals res. | | 0 to 0.5%
RESIDUALS RES.
0 to 0.5%
ZN
17.8 to 22.2%
FE
0 to 0.060%
Mechanical
A - Min. elongation at fracture (%) (R330)
30
A - Min. elongation at fracture (%) (R390)
25
Elastic (Young's, Tensile) Modulus
110 GPa
Poisson's Ratio
0.32
R p0.2 0.2% proof strength (MPa) (R330)
90
R p0.2 0.2% proof strength (MPa) (R390)
240
Rm - Tensile strength (MPa) (R330)
330
Rm - Tensile strength (MPa) (R390)
390
Shear Modulus
41 GPa
Tensile Strength: Ultimate (UTS)
390 MPa
Tensile Strength: Yield (Proof)
140 MPa
Hardness
Vickers hardness ( HV): (H070)
70 - 105
Vickers hardness ( HV): (H100)
100
Physical
Density
8.3 g/cm 3
Thermal
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
160 °C
Melting Completion (Liquidus)
970 °C
Melting Onset (Solidus)
930 °C
Specific Heat Capacity
400 J/kg-K
Thermal Conductivity
100 W/m-K
Thermal Diffusivity
30 mm 2 /s
Thermal Expansion
19 µm/m-K
Thermal Shock Resistance
13 points
Electrical
Electrical Conductivity: Equal Volume
23 % IACS
Electrical Conductivity: Equal Weight (Specific)
25 % IACS
Calculated
Resilience: Unit (Modulus of Resilience)
90 kJ/m 3
Stiffness to Weight: Axial
7.3 points
Stiffness to Weight: Bending
19 points
Strength to Weight: Axial
13 points
Strength to Weight: Bending
14 points
Environmental
Base Metal Price
26 % relative
Embodied Carbon
2.8 kg CO 2 /kg material
Embodied Energy
46 MJ/kg
Embodied Energy
46 MJ/kg 20 x 10 3 BTU/lb
Embodied Water
340 L/kg
Embodied Water
340 L/kg 40 gal/lb
Registered Designations & Aliases
C68700CW702RCW702RCuZn20Al2AsUNS C68700 (CW702R) Aluminum Brass
Standards
ASTM B111 ASTM B111: Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock
EN 12449 EN 12449: 1999 Copper and copper alloys. Seamless, round tubes for general purposes
EN 12451 EN 12451: 1999 Copper and copper alloys. Seamless, round tubes for heat exchangers
EN 12452 EN 12452: 1999 Copper and copper alloys. Rolled, finned, seamless tubes for heat exchangers
EN 1652 EN 1652: 1998 Copper and copper alloys. Plate, sheet, strip and circles for general purposes
EN 1653 EN 1653: 1998 Copper and copper alloys. Plate, sheet and circles for boilers, pressure vessels and hot water storage units