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SAE-AISI 4340 Steel vs. CC212E Bronze

SAE-AISI 4340 steel belongs to the iron alloys classification, while CC212E bronze belongs to the copper alloys. There are 27 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 4340 steel and the bottom bar is CC212E bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 360
170
Elastic (Young's, Tensile) Modulus, GPa 190
130
Elongation at Break, % 12 to 22
20
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
47
Tensile Strength: Ultimate (UTS), MPa 690 to 1280
710
Tensile Strength: Yield (Proof), MPa 470 to 1150
310

Thermal Properties

Latent Heat of Fusion, J/g 250
230
Maximum Temperature: Mechanical, °C 430
220
Melting Completion (Liquidus), °C 1460
1080
Melting Onset (Solidus), °C 1420
1020
Specific Heat Capacity, J/kg-K 470
440
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
27
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.7
3.4
Embodied Energy, MJ/kg 22
55
Embodied Water, L/kg 53
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 170
120
Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 3490
390
Stiffness to Weight: Axial, points 13
8.5
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 24 to 45
24
Strength to Weight: Bending, points 22 to 33
21
Thermal Shock Resistance, points 20 to 38
22

Alloy Composition

Aluminum (Al), % 0
7.0 to 9.0
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0
68 to 77
Iron (Fe), % 95.1 to 96.3
2.0 to 4.0
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0.6 to 0.8
8.0 to 15
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 1.7 to 2.0
1.5 to 4.5
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.5
Zinc (Zn), % 0
0 to 1.0