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ASTM A356 Grade 8 vs. C34500 Brass

ASTM A356 grade 8 belongs to the iron alloys classification, while C34500 brass belongs to the copper alloys. There are 28 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 ASTM A356 grade 8 and the bottom bar is C34500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 21
12 to 28
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 630
340 to 430
Tensile Strength: Yield (Proof), MPa 390
120 to 180

Thermal Properties

Latent Heat of Fusion, J/g 260
170
Maximum Temperature: Mechanical, °C 440
120
Melting Completion (Liquidus), °C 1470
910
Melting Onset (Solidus), °C 1430
890
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 38
120
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
26
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
29

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
24
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 2.0
2.6
Embodied Energy, MJ/kg 26
45
Embodied Water, L/kg 55
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
42 to 75
Resilience: Unit (Modulus of Resilience), kJ/m3 390
69 to 160
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 22
12 to 15
Strength to Weight: Bending, points 21
13 to 16
Thermal Diffusivity, mm2/s 10
37
Thermal Shock Resistance, points 18
11 to 14

Alloy Composition

Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 1.0 to 1.5
0
Copper (Cu), % 0
62 to 65
Iron (Fe), % 95.4 to 97.4
0 to 0.15
Lead (Pb), % 0
1.5 to 2.5
Manganese (Mn), % 0.5 to 0.9
0
Molybdenum (Mo), % 0.9 to 1.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.2 to 0.6
0
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0
32 to 36.5
Residuals, % 0
0 to 0.4