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SAE-AISI M4 Steel vs. C37100 Brass

SAE-AISI M4 steel belongs to the iron alloys classification, while C37100 brass belongs to the copper 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 SAE-AISI M4 steel and the bottom bar is C37100 brass.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

Carbon (C), % 1.3 to 1.4
0
Chromium (Cr), % 3.8 to 4.8
0
Copper (Cu), % 0 to 0.25
58 to 62
Iron (Fe), % 75.9 to 81.4
0 to 0.15
Lead (Pb), % 0
0.6 to 1.2
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
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
36.3 to 41.4
Residuals, % 0
0 to 0.4