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SAE-AISI M4 Steel vs. C87500 Brass

SAE-AISI M4 steel belongs to the iron alloys classification, while C87500 brass belongs to the copper alloys. There are 21 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 SAE-AISI M4 steel and the bottom bar is C87500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 76
42
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
460

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1610
920
Melting Onset (Solidus), °C 1560
820
Specific Heat Capacity, J/kg-K 440
410
Thermal Conductivity, W/m-K 25
28
Thermal Expansion, µm/m-K 12
18

Otherwise Unclassified Properties

Base Metal Price, % relative 25
27
Density, g/cm3 8.3
8.3
Embodied Carbon, kg CO2/kg material 14
2.7
Embodied Energy, MJ/kg 210
44
Embodied Water, L/kg 110
300

Common Calculations

Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 23
19
Strength to Weight: Axial, points 26 to 72
16
Strength to Weight: Bending, points 23 to 45
16
Thermal Diffusivity, mm2/s 6.9
8.3
Thermal Shock Resistance, points 24 to 68
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.5
Carbon (C), % 1.3 to 1.4
0
Chromium (Cr), % 3.8 to 4.8
0
Copper (Cu), % 0 to 0.25
79 to 85
Iron (Fe), % 75.9 to 81.4
0
Lead (Pb), % 0
0 to 0.5
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.3 to 5.5
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.2 to 0.45
3.0 to 5.0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0
Zinc (Zn), % 0
12 to 16
Residuals, % 0
0 to 0.5