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C68800 Brass vs. ASTM A387 Grade 2 Steel

C68800 brass belongs to the copper alloys classification, while ASTM A387 grade 2 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C68800 brass and the bottom bar is ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 2.0 to 36
25
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
73
Shear Strength, MPa 380 to 510
300 to 350
Tensile Strength: Ultimate (UTS), MPa 570 to 890
470 to 550
Tensile Strength: Yield (Proof), MPa 390 to 790
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 190
250
Maximum Temperature: Mechanical, °C 160
420
Melting Completion (Liquidus), °C 960
1470
Melting Onset (Solidus), °C 950
1420
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 40
45
Thermal Expansion, µm/m-K 19
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 18
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 20
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 26
2.6
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 2.8
1.6
Embodied Energy, MJ/kg 48
20
Embodied Water, L/kg 350
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 180
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 710 to 2860
180 to 320
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 19 to 30
16 to 20
Strength to Weight: Bending, points 19 to 25
17 to 19
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 19 to 30
14 to 16

Alloy Composition

Aluminum (Al), % 3.0 to 3.8
0
Carbon (C), % 0
0.050 to 0.21
Chromium (Cr), % 0
0.5 to 0.8
Cobalt (Co), % 0.25 to 0.55
0
Copper (Cu), % 70.8 to 75.5
0
Iron (Fe), % 0 to 0.2
97.1 to 98.3
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0
0.55 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.6
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0.15 to 0.4
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 21.3 to 24.1
0
Residuals, % 0 to 0.5
0