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ASTM A302 Alloy Steel vs. C68400 Brass

ASTM A302 alloy steel belongs to the iron alloys classification, while C68400 brass belongs to the copper 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 ASTM A302 alloy steel and the bottom bar is C68400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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