UNS C84400 (Alloy 5A) Valve Metal
Brass
Property Overview
Density8.8g/cm³
Elastic Modulus100GPa
Tensile Strength230MPa
Yield Strength110MPa
Brinell HardnessUnknown
Maximum Service Temperature160°C
Chemical Composition
NI
0 to 1.0%
SI
0 to 0.0050%
P
0 to 1.5%
S
0 to 0.080%
CU
78 to 82%
AL
0 to 0.0050%
PB
6.0 to 8.0%
RES.
Residuals res. | | 0 to 0.7%
RESIDUALS RES.
0 to 0.7%
SB
0 to 0.25%
SN
2.3 to 3.5%
ZN
7.0 to 10%
FE
0 to 0.4%
Mechanical
Elastic (Young's, Tensile) Modulus
100 GPa
Elongation at Break
19 %
Poisson's Ratio
0.34
Shear Modulus
39 GPa
Tensile Strength: Ultimate (UTS)
230 MPa
Tensile Strength: Yield (Proof)
110 MPa
Physical
Density
8.8 g/cm 3
Thermal
Latent Heat of Fusion
180 J/g
Maximum Temperature: Mechanical
160 °C
Melting Completion (Liquidus)
1000 °C
Melting Onset (Solidus)
840 °C
Specific Heat Capacity
370 J/kg-K
Thermal Conductivity
72 W/m-K
Thermal Diffusivity
22 mm 2 /s
Thermal Expansion
19 µm/m-K
Thermal Shock Resistance
8.3 points
Electrical
Electrical Conductivity: Equal Volume
16 % IACS
Electrical Conductivity: Equal Weight (Specific)
17 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
36 MJ/m 3
Resilience: Unit (Modulus of Resilience)
58 kJ/m 3
Stiffness to Weight: Axial
6.6 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
7.2 points
Strength to Weight: Bending
9.4 points
Environmental
Base Metal Price
29 % 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
Alloy 5AC84400UNS C84400 (Alloy 5A) Valve Metal
Standards
ASTM B271 ASTM B271: Standard Specification for Copper-Base Alloy Centrifugal Castings
ASTM B271 ASTM B271: Standard Specification for Copper-Base Alloy Centrifugal Castings ASTM B505: Standard Specification for Copper Alloy Continuous Castings Copper: Its Trade, Manufacture, Use, and Environmental Status, Gunter Joseph, 2001
ASTM B505 ASTM B505: Standard Specification for Copper Alloy Continuous Castings