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SAE-AISI 8645 Steel vs. CC750S Brass

SAE-AISI 8645 steel belongs to the iron alloys classification, while CC750S brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8645 steel and the bottom bar is CC750S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 200
54
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 12 to 23
13
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 600 to 670
200
Tensile Strength: Yield (Proof), MPa 390 to 560
80

Thermal Properties

Latent Heat of Fusion, J/g 250
170
Maximum Temperature: Mechanical, °C 410
130
Melting Completion (Liquidus), °C 1460
860
Melting Onset (Solidus), °C 1420
810
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 39
110
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
24
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
26

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
25
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.5
2.8
Embodied Energy, MJ/kg 20
46
Embodied Water, L/kg 50
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
22
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 840
30
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 21 to 24
6.8
Strength to Weight: Bending, points 20 to 22
9.3
Thermal Diffusivity, mm2/s 10
35
Thermal Shock Resistance, points 18 to 20
6.7

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0
62 to 67
Iron (Fe), % 96.5 to 97.7
0 to 0.8
Lead (Pb), % 0
1.0 to 3.0
Manganese (Mn), % 0.75 to 1.0
0 to 0.2
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.4 to 0.7
0 to 1.0
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0.15 to 0.35
0 to 0.050
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 1.5
Zinc (Zn), % 0
26.3 to 36