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SAE-AISI 4340M Steel vs. C95500 Bronze

SAE-AISI 4340M steel belongs to the iron alloys classification, while C95500 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 C95500 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 710
200 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 6.0
8.4 to 10
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 72
44
Tensile Strength: Ultimate (UTS), MPa 2340
700 to 850
Tensile Strength: Yield (Proof), MPa 1240
320 to 470

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
1040
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 38
42
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.8
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 9.1
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 3.9
28
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.9
3.5
Embodied Energy, MJ/kg 26
57
Embodied Water, L/kg 55
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
58 to 61
Resilience: Unit (Modulus of Resilience), kJ/m3 4120
420 to 950
Stiffness to Weight: Axial, points 13
8.0
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 84
24 to 29
Strength to Weight: Bending, points 51
21 to 24
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 70
24 to 29

Alloy Composition

Aluminum (Al), % 0
10 to 11.5
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 1.0
0
Copper (Cu), % 0
78 to 84
Iron (Fe), % 93.3 to 94.8
3.0 to 5.0
Manganese (Mn), % 0.65 to 0.9
0 to 3.5
Molybdenum (Mo), % 0.35 to 0.45
0
Nickel (Ni), % 1.7 to 2.0
3.0 to 5.5
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