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ACI-ASTM CN7MS Steel vs. C37700 Brass

ACI-ASTM CN7MS steel belongs to the iron alloys classification, while C37700 brass belongs to the copper alloys. There are 26 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 ACI-ASTM CN7MS steel and the bottom bar is C37700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 39
40
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 77
39
Tensile Strength: Ultimate (UTS), MPa 540
400
Tensile Strength: Yield (Proof), MPa 230
160

Thermal Properties

Latent Heat of Fusion, J/g 340
170
Maximum Temperature: Mechanical, °C 1040
120
Melting Completion (Liquidus), °C 1400
890
Melting Onset (Solidus), °C 1350
880
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 12
120
Thermal Expansion, µm/m-K 16
21

Otherwise Unclassified Properties

Base Metal Price, % relative 28
23
Density, g/cm3 7.9
8.1
Embodied Carbon, kg CO2/kg material 5.1
2.6
Embodied Energy, MJ/kg 71
45
Embodied Water, L/kg 180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
130
Resilience: Unit (Modulus of Resilience), kJ/m3 140
120
Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 19
14
Strength to Weight: Bending, points 19
15
Thermal Diffusivity, mm2/s 3.2
39
Thermal Shock Resistance, points 13
13

Alloy Composition

Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 1.5 to 2.0
58 to 61
Iron (Fe), % 45.4 to 53.5
0 to 0.3
Lead (Pb), % 0
1.5 to 2.5
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 2.5 to 3.5
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
35.7 to 40.5
Residuals, % 0
0 to 0.5