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C68700 Brass vs. 70Ag-30Ni Alloy

C68700 brass belongs to the copper alloys classification, while 70Ag-30Ni alloy belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C68700 brass and the bottom bar is 70Ag-30Ni alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Poisson's Ratio 0.32
0.35
Shear Modulus, GPa 41
39
Tensile Strength: Ultimate (UTS), MPa 390
320 to 530

Thermal Properties

Latent Heat of Fusion, J/g 190
170
Melting Completion (Liquidus), °C 970
960
Melting Onset (Solidus), °C 930
960
Specific Heat Capacity, J/kg-K 400
300
Thermal Expansion, µm/m-K 19
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
69
Electrical Conductivity: Equal Weight (Specific), % IACS 25
62

Otherwise Unclassified Properties

Density, g/cm3 8.3
10

Common Calculations

Stiffness to Weight: Axial, points 7.3
5.8
Stiffness to Weight: Bending, points 19
16
Strength to Weight: Axial, points 13
8.8 to 15
Strength to Weight: Bending, points 14
10 to 15
Thermal Shock Resistance, points 13
13 to 21

Alloy Composition

Aluminum (Al), % 1.8 to 2.5
0
Arsenic (As), % 0.020 to 0.1
0
Copper (Cu), % 76 to 79
0
Iron (Fe), % 0 to 0.060
0
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0
28.8 to 31
Silver (Ag), % 0
69 to 71
Zinc (Zn), % 17.8 to 22.2
0
Residuals, % 0
0 to 0.2