MakeItFrom.com
Menu (ESC)

SAE-AISI 4340 Steel vs. C94800 Bronze

SAE-AISI 4340 steel belongs to the iron alloys classification, while C94800 bronze belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 4340 steel and the bottom bar is C94800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 12 to 22
22
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
43
Tensile Strength: Ultimate (UTS), MPa 690 to 1280
310
Tensile Strength: Yield (Proof), MPa 470 to 1150
160

Thermal Properties

Latent Heat of Fusion, J/g 250
200
Maximum Temperature: Mechanical, °C 430
190
Melting Completion (Liquidus), °C 1460
1030
Melting Onset (Solidus), °C 1420
900
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 44
39
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
12
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
12

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
34
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 1.7
3.5
Embodied Energy, MJ/kg 22
56
Embodied Water, L/kg 53
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 170
58
Resilience: Unit (Modulus of Resilience), kJ/m3 590 to 3490
110
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 24 to 45
9.8
Strength to Weight: Bending, points 22 to 33
12
Thermal Diffusivity, mm2/s 12
12
Thermal Shock Resistance, points 20 to 38
11

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.15
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0
84 to 89
Iron (Fe), % 95.1 to 96.3
0 to 0.25
Lead (Pb), % 0
0.3 to 1.0
Manganese (Mn), % 0.6 to 0.8
0 to 0.2
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 1.7 to 2.0
4.5 to 6.0
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0.15 to 0.35
0 to 0.0050
Sulfur (S), % 0 to 0.040
0 to 0.050
Tin (Sn), % 0
4.5 to 6.0
Zinc (Zn), % 0
1.0 to 2.5
Residuals, % 0
0 to 1.3