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C68700 Brass vs. S32950 Stainless Steel

C68700 brass belongs to the copper alloys classification, while S32950 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C68700 brass and the bottom bar is S32950 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Poisson's Ratio 0.32
0.27
Shear Modulus, GPa 41
80
Tensile Strength: Ultimate (UTS), MPa 390
780
Tensile Strength: Yield (Proof), MPa 140
550

Thermal Properties

Latent Heat of Fusion, J/g 190
300
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 970
1430
Melting Onset (Solidus), °C 930
1390
Specific Heat Capacity, J/kg-K 400
480
Thermal Conductivity, W/m-K 100
16
Thermal Expansion, µm/m-K 19
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 23
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 25
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 26
17
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 2.8
3.4
Embodied Energy, MJ/kg 46
47
Embodied Water, L/kg 340
180

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 90
730
Stiffness to Weight: Axial, points 7.3
15
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 13
28
Strength to Weight: Bending, points 14
24
Thermal Diffusivity, mm2/s 30
4.3
Thermal Shock Resistance, points 13
21

Alloy Composition

Aluminum (Al), % 1.8 to 2.5
0
Arsenic (As), % 0.020 to 0.1
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
26 to 29
Copper (Cu), % 76 to 79
0
Iron (Fe), % 0 to 0.060
60.3 to 69.4
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 0
3.5 to 5.2
Nitrogen (N), % 0
0.15 to 0.35
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0
0 to 0.6
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 17.8 to 22.2
0
Residuals, % 0 to 0.5
0