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SAE-AISI 1078 Steel vs. C69430 Brass

SAE-AISI 1078 steel belongs to the iron alloys classification, while C69430 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1078 steel and the bottom bar is C69430 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 11 to 14
17
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
42
Shear Strength, MPa 440 to 470
350
Tensile Strength: Ultimate (UTS), MPa 730 to 780
570
Tensile Strength: Yield (Proof), MPa 430 to 570
280

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
920
Melting Onset (Solidus), °C 1420
820
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 49
26
Thermal Expansion, µm/m-K 11
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
27
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 1.4
2.7
Embodied Energy, MJ/kg 18
44
Embodied Water, L/kg 45
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 90
80
Resilience: Unit (Modulus of Resilience), kJ/m3 490 to 860
340
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 26 to 28
19
Strength to Weight: Bending, points 23 to 24
18
Thermal Diffusivity, mm2/s 13
7.7
Thermal Shock Resistance, points 25 to 26
20

Alloy Composition

Arsenic (As), % 0
0.030 to 0.060
Carbon (C), % 0.72 to 0.85
0
Copper (Cu), % 0
80 to 83
Iron (Fe), % 98.5 to 99
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Manganese (Mn), % 0.3 to 0.6
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
3.5 to 4.5
Sulfur (S), % 0 to 0.050
0
Zinc (Zn), % 0
11.4 to 16.5
Residuals, % 0
0 to 0.5