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C37700 Brass vs. C99700 Brass

Both C37700 brass and C99700 brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 83% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C37700 brass and the bottom bar is C99700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 40
25
Poisson's Ratio 0.31
0.32
Shear Modulus, GPa 39
46
Tensile Strength: Ultimate (UTS), MPa 400
380
Tensile Strength: Yield (Proof), MPa 160
170

Thermal Properties

Latent Heat of Fusion, J/g 170
200
Maximum Temperature: Mechanical, °C 120
160
Melting Completion (Liquidus), °C 890
900
Melting Onset (Solidus), °C 880
880
Specific Heat Capacity, J/kg-K 380
410
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 30
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 23
25
Density, g/cm3 8.1
8.1
Embodied Carbon, kg CO2/kg material 2.6
3.3
Embodied Energy, MJ/kg 45
53
Embodied Water, L/kg 320
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
78
Resilience: Unit (Modulus of Resilience), kJ/m3 120
120
Stiffness to Weight: Axial, points 7.1
8.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 14
13
Strength to Weight: Bending, points 15
14
Thermal Shock Resistance, points 13
11

Alloy Composition

Aluminum (Al), % 0
0.5 to 3.0
Copper (Cu), % 58 to 61
54 to 65.5
Iron (Fe), % 0 to 0.3
0 to 1.0
Lead (Pb), % 1.5 to 2.5
0 to 2.0
Manganese (Mn), % 0
11 to 15
Nickel (Ni), % 0
4.0 to 6.0
Tin (Sn), % 0
0 to 1.0
Zinc (Zn), % 35.7 to 40.5
19 to 25
Residuals, % 0
0 to 0.3