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SAE-AISI 8645 Steel vs. C33000 Brass

SAE-AISI 8645 steel belongs to the iron alloys classification, while C33000 brass belongs to the copper alloys. There are 29 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 SAE-AISI 8645 steel and the bottom bar is C33000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 12 to 23
7.0 to 60
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 73
40
Shear Strength, MPa 380 to 400
240 to 300
Tensile Strength: Ultimate (UTS), MPa 600 to 670
320 to 520
Tensile Strength: Yield (Proof), MPa 390 to 560
110 to 450

Thermal Properties

Latent Heat of Fusion, J/g 250
180
Maximum Temperature: Mechanical, °C 410
130
Melting Completion (Liquidus), °C 1460
940
Melting Onset (Solidus), °C 1420
900
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 39
120
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
26
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
29

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
24
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.5
2.7
Embodied Energy, MJ/kg 20
45
Embodied Water, L/kg 50
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 120
35 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 420 to 840
60 to 950
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 21 to 24
11 to 18
Strength to Weight: Bending, points 20 to 22
13 to 18
Thermal Diffusivity, mm2/s 10
37
Thermal Shock Resistance, points 18 to 20
11 to 17

Alloy Composition

Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.4 to 0.6
0
Copper (Cu), % 0
65 to 68
Iron (Fe), % 96.5 to 97.7
0 to 0.070
Lead (Pb), % 0
0.25 to 0.7
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.4 to 0.7
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
30.8 to 34.8
Residuals, % 0
0 to 0.4