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SAE-AISI 4340M Steel vs. C87610 Bronze

SAE-AISI 4340M steel belongs to the iron alloys classification, while C87610 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340M steel and the bottom bar is C87610 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 6.0
22
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 72
43
Tensile Strength: Ultimate (UTS), MPa 2340
350
Tensile Strength: Yield (Proof), MPa 1240
140

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Mechanical, °C 430
190
Melting Completion (Liquidus), °C 1440
970
Melting Onset (Solidus), °C 1400
820
Specific Heat Capacity, J/kg-K 480
410
Thermal Conductivity, W/m-K 38
28
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
6.1
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
6.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
29
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 1.9
2.6
Embodied Energy, MJ/kg 26
43
Embodied Water, L/kg 55
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
62
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
88
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 84
11
Strength to Weight: Bending, points 51
13
Thermal Diffusivity, mm2/s 10
8.1
Thermal Shock Resistance, points 70
13

Alloy Composition

Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
90 to 94
Iron (Fe), % 93.3 to 94.8
0 to 0.2
Lead (Pb), % 0
0 to 0.2
Manganese (Mn), % 0.65 to 0.9
0 to 0.25
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
3.0 to 5.0
Sulfur (S), % 0 to 0.012
0
Vanadium (V), % 0.050 to 0.1
0
Zinc (Zn), % 0
3.0 to 5.0
Residuals, % 0
0 to 0.5