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SAE-AISI 4340M Steel vs. C67000 Bronze

SAE-AISI 4340M steel belongs to the iron alloys classification, while C67000 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 C67000 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 6.0
5.6 to 11
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 72
42
Shear Strength, MPa 1360
390 to 510
Tensile Strength: Ultimate (UTS), MPa 2340
660 to 880
Tensile Strength: Yield (Proof), MPa 1240
350 to 540

Thermal Properties

Latent Heat of Fusion, J/g 280
190
Maximum Temperature: Mechanical, °C 430
160
Melting Completion (Liquidus), °C 1440
900
Melting Onset (Solidus), °C 1400
850
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 38
99
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
22
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
25

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.9
2.9
Embodied Energy, MJ/kg 26
49
Embodied Water, L/kg 55
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
43 to 62
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
560 to 1290
Stiffness to Weight: Axial, points 13
7.8
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 84
23 to 31
Strength to Weight: Bending, points 51
21 to 26
Thermal Diffusivity, mm2/s 10
30
Thermal Shock Resistance, points 70
21 to 29

Alloy Composition

Aluminum (Al), % 0
3.0 to 6.0
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
63 to 68
Iron (Fe), % 93.3 to 94.8
2.0 to 4.0
Lead (Pb), % 0
0 to 0.2
Manganese (Mn), % 0.65 to 0.9
2.5 to 5.0
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
0
Phosphorus (P), % 0 to 0.012
0
Silicon (Si), % 1.5 to 1.8
0
Sulfur (S), % 0 to 0.012
0
Tin (Sn), % 0
0 to 0.5
Vanadium (V), % 0.050 to 0.1
0
Zinc (Zn), % 0
21.8 to 32.5
Residuals, % 0
0 to 0.5