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SAE-AISI 4340M Steel vs. C62500 Bronze

SAE-AISI 4340M steel belongs to the iron alloys classification, while C62500 bronze belongs to the copper alloys. There are 30 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 C62500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 6.0
1.0
Fatigue Strength, MPa 690
460
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 72
42
Shear Strength, MPa 1360
410
Tensile Strength: Ultimate (UTS), MPa 2340
690
Tensile Strength: Yield (Proof), MPa 1240
410

Thermal Properties

Latent Heat of Fusion, J/g 280
230
Maximum Temperature: Mechanical, °C 430
230
Melting Completion (Liquidus), °C 1440
1050
Melting Onset (Solidus), °C 1400
1050
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 38
47
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
10
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
11

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
26
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 1.9
3.3
Embodied Energy, MJ/kg 26
55
Embodied Water, L/kg 55
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
6.0
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
750
Stiffness to Weight: Axial, points 13
7.8
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 84
24
Strength to Weight: Bending, points 51
22
Thermal Diffusivity, mm2/s 10
13
Thermal Shock Resistance, points 70
24

Alloy Composition

Aluminum (Al), % 0
12.5 to 13.5
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
78.5 to 84
Iron (Fe), % 93.3 to 94.8
3.5 to 5.5
Manganese (Mn), % 0.65 to 0.9
0 to 2.0
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
Vanadium (V), % 0.050 to 0.1
0
Residuals, % 0
0 to 0.5