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C68400 Brass vs. ASTM A302 Alloy Steel

C68400 brass belongs to the copper alloys classification, while ASTM A302 alloy steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C68400 brass and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 18
20 to 23
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 330
370 to 390
Tensile Strength: Ultimate (UTS), MPa 540
590 to 620
Tensile Strength: Yield (Proof), MPa 310
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 210
250
Maximum Temperature: Mechanical, °C 130
410
Melting Completion (Liquidus), °C 840
1460
Melting Onset (Solidus), °C 820
1420
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 66
39 to 51
Thermal Expansion, µm/m-K 20
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 99
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
2.4 to 3.0
Density, g/cm3 7.9
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 2.7
1.5 to 1.6
Embodied Energy, MJ/kg 47
20 to 21
Embodied Water, L/kg 320
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 81
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 460
330 to 410
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 19
21 to 22
Strength to Weight: Bending, points 19
20 to 21
Thermal Diffusivity, mm2/s 21
10 to 14
Thermal Shock Resistance, points 18
17 to 18