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ASTM A27 Cast Steel vs. C68400 Brass

ASTM A27 cast steel belongs to the iron alloys classification, while C68400 brass belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A27 cast steel and the bottom bar is C68400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 25 to 27
18
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
41
Tensile Strength: Ultimate (UTS), MPa 460 to 550
540
Tensile Strength: Yield (Proof), MPa 230 to 310
310

Thermal Properties

Latent Heat of Fusion, J/g 250
210
Maximum Temperature: Mechanical, °C 400
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 52
66
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0 to 7.1
87
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
99

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
2.7
Embodied Energy, MJ/kg 18
47
Embodied Water, L/kg 45 to 46
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 120
81
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 260
460
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 16 to 20
19
Strength to Weight: Bending, points 17 to 19
19
Thermal Diffusivity, mm2/s 14
21
Thermal Shock Resistance, points 15 to 18
18