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AWS BMg-1 vs. C85700 Brass

AWS BMg-1 belongs to the magnesium alloys classification, while C85700 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, 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 AWS BMg-1 and the bottom bar is C85700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 47
100
Elongation at Break, % 3.8
17
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 18
40
Tensile Strength: Ultimate (UTS), MPa 180
310
Tensile Strength: Yield (Proof), MPa 110
110

Thermal Properties

Latent Heat of Fusion, J/g 350
170
Maximum Temperature: Mechanical, °C 130
120
Melting Completion (Liquidus), °C 600
940
Melting Onset (Solidus), °C 440
910
Specific Heat Capacity, J/kg-K 980
380
Thermal Conductivity, W/m-K 76
84
Thermal Expansion, µm/m-K 26
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
22
Electrical Conductivity: Equal Weight (Specific), % IACS 55
25

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 1.8
8.0
Embodied Carbon, kg CO2/kg material 22
2.8
Embodied Energy, MJ/kg 160
47
Embodied Water, L/kg 980
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.9
41
Resilience: Unit (Modulus of Resilience), kJ/m3 120
59
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 66
20
Strength to Weight: Axial, points 27
11
Strength to Weight: Bending, points 39
13
Thermal Diffusivity, mm2/s 43
27
Thermal Shock Resistance, points 10
10

Alloy Composition


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Aluminum (Al), % 8.3 to 9.7
0 to 0.8
Beryllium (Be), % 0.00020 to 0.00080
0
Copper (Cu), % 0 to 0.050
58 to 64
Iron (Fe), % 0 to 0.0050
0 to 0.7
Lead (Pb), % 0
0.8 to 1.5
Magnesium (Mg), % 86.1 to 89.8
0
Manganese (Mn), % 0.15 to 1.5
0
Nickel (Ni), % 0 to 0.0050
0 to 1.0
Silicon (Si), % 0 to 0.050
0 to 0.050
Tin (Sn), % 0
0.5 to 1.5
Zinc (Zn), % 1.7 to 2.3
32 to 40
Residuals, % 0 to 0.3
0 to 1.3