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C68800 Brass vs. SAE-AISI M34 Steel

C68800 brass belongs to the copper alloys classification, while SAE-AISI M34 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C68800 brass and the bottom bar is SAE-AISI M34 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
77
Tensile Strength: Ultimate (UTS), MPa 570 to 890
800 to 2170

Thermal Properties

Latent Heat of Fusion, J/g 190
270
Melting Completion (Liquidus), °C 960
1540
Melting Onset (Solidus), °C 950
1500
Specific Heat Capacity, J/kg-K 400
450
Thermal Conductivity, W/m-K 40
24
Thermal Expansion, µm/m-K 19
12

Otherwise Unclassified Properties

Base Metal Price, % relative 26
32
Density, g/cm3 8.2
8.2
Embodied Carbon, kg CO2/kg material 2.8
9.5
Embodied Energy, MJ/kg 48
140
Embodied Water, L/kg 350
150

Common Calculations

Stiffness to Weight: Axial, points 7.3
14
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 19 to 30
27 to 74
Strength to Weight: Bending, points 19 to 25
23 to 46
Thermal Diffusivity, mm2/s 12
6.7
Thermal Shock Resistance, points 19 to 30
25 to 67

Alloy Composition

Aluminum (Al), % 3.0 to 3.8
0
Carbon (C), % 0
0.85 to 0.92
Chromium (Cr), % 0
3.5 to 4.0
Cobalt (Co), % 0.25 to 0.55
7.8 to 8.8
Copper (Cu), % 70.8 to 75.5
0 to 0.25
Iron (Fe), % 0 to 0.2
71.3 to 76.5
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
7.8 to 9.2
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0.2 to 0.45
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.4 to 2.1
Vanadium (V), % 0
1.9 to 2.3
Zinc (Zn), % 21.3 to 24.1
0
Residuals, % 0 to 0.5
0