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ASTM B685 Alloy vs. C41300 Brass

ASTM B685 alloy belongs to the otherwise unclassified metals classification, while C41300 brass belongs to the copper alloys. They have 40% of their average alloy composition in common. There are 17 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is ASTM B685 alloy and the bottom bar is C41300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Poisson's Ratio 0.37
0.33
Shear Modulus, GPa 43
42
Tensile Strength: Ultimate (UTS), MPa 660 to 1060
300 to 630

Thermal Properties

Latent Heat of Fusion, J/g 180
200
Melting Completion (Liquidus), °C 1230
1040
Melting Onset (Solidus), °C 1200
1010
Specific Heat Capacity, J/kg-K 300
380
Thermal Expansion, µm/m-K 14
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 5.0
30
Electrical Conductivity: Equal Weight (Specific), % IACS 4.1
31

Otherwise Unclassified Properties

Density, g/cm3 11
8.7

Common Calculations

Stiffness to Weight: Axial, points 6.1
7.2
Stiffness to Weight: Bending, points 15
18
Strength to Weight: Axial, points 17 to 27
9.6 to 20
Strength to Weight: Bending, points 16 to 21
11 to 19
Thermal Shock Resistance, points 28 to 46
11 to 22

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Cadmium (Cd), % 0 to 0.050
0
Copper (Cu), % 39.5 to 40.5
89 to 93
Iron (Fe), % 0 to 0.050
0 to 0.050
Lead (Pb), % 0 to 0.030
0 to 0.1
Palladium (Pd), % 59 to 60.5
0
Silver (Ag), % 0 to 0.1
0
Tin (Sn), % 0
0.7 to 1.3
Zinc (Zn), % 0 to 0.060
5.1 to 10.3
Residuals, % 0
0 to 0.5