UNS C90800 Gear Bronze
Bronze
Property Overview
Density8.7g/cm³
Elastic Modulus110GPa
Tensile Strength330MPa
Yield Strength170MPa
Brinell Hardness90HB
Maximum Service Temperature170°C
Chemical Composition
NI
0 to 0.5%
SI
0 to 0.0050%
P
0 to 0.3%
S
0 to 0.050%
CU
85.3 to 89%
AL
0 to 0.0050%
PB
0 to 0.25%
SB
0 to 0.2%
SN
11 to 13%
ZN
0 to 0.25%
FE
0 to 0.15%
Mechanical
Elastic (Young's, Tensile) Modulus
110 GPa
Elongation at Break
13 %
Poisson's Ratio
0.34
Shear Modulus
40 GPa
Tensile Strength: Ultimate (UTS)
330 MPa
Tensile Strength: Yield (Proof)
170 MPa
Hardness
Brinell Hardness
90
Physical
Density
8.7 g/cm 3
Thermal
Latent Heat of Fusion
190 J/g
Maximum Temperature: Mechanical
170 °C
Melting Completion (Liquidus)
990 °C
Melting Onset (Solidus)
870 °C
Specific Heat Capacity
370 J/kg-K
Thermal Conductivity
68 W/m-K
Thermal Diffusivity
21 mm 2 /s
Thermal Expansion
18 µm/m-K
Thermal Shock Resistance
12 points
Electrical
Electrical Conductivity: Equal Volume
11 % IACS
Electrical Conductivity: Equal Weight (Specific)
11 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
35 MJ/m 3
Resilience: Unit (Modulus of Resilience)
140 kJ/m 3
Stiffness to Weight: Axial
6.9 points
Stiffness to Weight: Bending
18 points
Strength to Weight: Axial
11 points
Strength to Weight: Bending
12 points
Environmental
Base Metal Price
36 % relative
Embodied Carbon
3.8 kg CO 2 /kg material
Embodied Energy
62 MJ/kg
Embodied Energy
62 MJ/kg 27 x 10 3 BTU/lb
Embodied Water
410 L/kg
Embodied Water
410 L/kg 48 gal/lb
Registered Designations & Aliases
C90800UNS C90800 Gear Bronze
Standards
ASTM B427 ASTM B427: Standard Specification for Gear Bronze Alloy Castings