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C37100 Brass vs. SAE-AISI M4 Steel

C37100 brass belongs to the copper alloys classification, while SAE-AISI M4 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is C37100 brass and the bottom bar is SAE-AISI M4 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
200
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
76
Tensile Strength: Ultimate (UTS), MPa 370 to 520
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 170
260
Melting Completion (Liquidus), °C 900
1610
Melting Onset (Solidus), °C 890
1560
Specific Heat Capacity, J/kg-K 380
440
Thermal Conductivity, W/m-K 120
25
Thermal Expansion, µm/m-K 21
12

Otherwise Unclassified Properties

Base Metal Price, % relative 23
25
Density, g/cm3 8.0
8.3
Embodied Carbon, kg CO2/kg material 2.7
14
Embodied Energy, MJ/kg 45
210
Embodied Water, L/kg 320
110

Common Calculations

Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 20
23
Strength to Weight: Axial, points 13 to 18
26 to 72
Strength to Weight: Bending, points 14 to 18
23 to 45
Thermal Diffusivity, mm2/s 39
6.9
Thermal Shock Resistance, points 12 to 17
24 to 68

Alloy Composition

Carbon (C), % 0
1.3 to 1.4
Chromium (Cr), % 0
3.8 to 4.8
Copper (Cu), % 58 to 62
0 to 0.25
Iron (Fe), % 0 to 0.15
75.9 to 81.4
Lead (Pb), % 0.6 to 1.2
0
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 0
4.3 to 5.5
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
5.3 to 6.5
Vanadium (V), % 0
3.8 to 4.5
Zinc (Zn), % 36.3 to 41.4
0
Residuals, % 0 to 0.4
0