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C37100 Brass vs. SAE-AISI A4 Steel

C37100 brass belongs to the copper alloys classification, while SAE-AISI A4 steel belongs to the iron alloys. There are 23 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 C37100 brass and the bottom bar is SAE-AISI A4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
73
Tensile Strength: Ultimate (UTS), MPa 370 to 520
710 to 2050

Thermal Properties

Latent Heat of Fusion, J/g 170
250
Melting Completion (Liquidus), °C 900
1450
Melting Onset (Solidus), °C 890
1410
Specific Heat Capacity, J/kg-K 380
470
Thermal Conductivity, W/m-K 120
40
Thermal Expansion, µm/m-K 21
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 30
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 23
3.9
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.8
Embodied Energy, MJ/kg 45
24
Embodied Water, L/kg 320
59

Common Calculations

Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 13 to 18
25 to 73
Strength to Weight: Bending, points 14 to 18
23 to 46
Thermal Diffusivity, mm2/s 39
11
Thermal Shock Resistance, points 12 to 17
23 to 67

Alloy Composition

Carbon (C), % 0
1.0 to 1.1
Chromium (Cr), % 0
0.9 to 2.2
Copper (Cu), % 58 to 62
0 to 0.25
Iron (Fe), % 0 to 0.15
92 to 95.5
Lead (Pb), % 0.6 to 1.2
0
Manganese (Mn), % 0
1.8 to 2.2
Molybdenum (Mo), % 0
0.9 to 1.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 36.3 to 41.4
0
Residuals, % 0 to 0.4
0