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SAE-AISI 4340M Steel vs. CC331G Bronze

SAE-AISI 4340M steel belongs to the iron alloys classification, while CC331G bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340M steel and the bottom bar is CC331G bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
140
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 6.0
20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 72
43
Tensile Strength: Ultimate (UTS), MPa 2340
620
Tensile Strength: Yield (Proof), MPa 1240
240

Thermal Properties

Latent Heat of Fusion, J/g 280
230
Maximum Temperature: Mechanical, °C 430
220
Melting Completion (Liquidus), °C 1440
1060
Melting Onset (Solidus), °C 1400
1000
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 38
61
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
13
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
14

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
28
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 1.9
3.2
Embodied Energy, MJ/kg 26
53
Embodied Water, L/kg 55
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
97
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
250
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 84
21
Strength to Weight: Bending, points 51
19
Thermal Diffusivity, mm2/s 10
17
Thermal Shock Resistance, points 70
22

Alloy Composition

Aluminum (Al), % 0
8.5 to 10.5
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
83 to 86.5
Iron (Fe), % 93.3 to 94.8
1.5 to 3.5
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0.65 to 0.9
0 to 1.0
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
0 to 1.5
Phosphorus (P), % 0 to 0.012
0
Silicon (Si), % 1.5 to 1.8
0 to 0.2
Sulfur (S), % 0 to 0.012
0
Tin (Sn), % 0
0 to 0.2
Vanadium (V), % 0.050 to 0.1
0
Zinc (Zn), % 0
0 to 0.5