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C37700 Brass vs. R05255 Alloy

C37700 brass belongs to the copper alloys classification, while R05255 alloy belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is C37700 brass and the bottom bar is R05255 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 40
20
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 39
70
Tensile Strength: Ultimate (UTS), MPa 400
540
Tensile Strength: Yield (Proof), MPa 160
450

Thermal Properties

Latent Heat of Fusion, J/g 170
140
Specific Heat Capacity, J/kg-K 380
140
Thermal Conductivity, W/m-K 120
59
Thermal Expansion, µm/m-K 21
6.6

Otherwise Unclassified Properties

Density, g/cm3 8.1
17
Embodied Water, L/kg 320
630

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
100
Resilience: Unit (Modulus of Resilience), kJ/m3 120
530
Stiffness to Weight: Axial, points 7.1
6.3
Stiffness to Weight: Bending, points 19
11
Strength to Weight: Axial, points 14
9.1
Strength to Weight: Bending, points 15
8.9
Thermal Diffusivity, mm2/s 39
25
Thermal Shock Resistance, points 13
31

Alloy Composition

Carbon (C), % 0
0 to 0.010
Copper (Cu), % 58 to 61
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.3
0 to 0.010
Lead (Pb), % 1.5 to 2.5
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 0
0 to 0.010
Niobium (Nb), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
95.9 to 98
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
2.0 to 3.5
Zinc (Zn), % 35.7 to 40.5
0
Residuals, % 0 to 0.5
0