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S21904 Stainless Steel vs. C61400 Bronze

S21904 stainless steel belongs to the iron alloys classification, while C61400 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is C61400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17 to 51
34 to 40
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 78
43
Shear Strength, MPa 510 to 620
370 to 380
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
540 to 570
Tensile Strength: Yield (Proof), MPa 390 to 910
220 to 270

Thermal Properties

Latent Heat of Fusion, J/g 290
220
Maximum Temperature: Mechanical, °C 980
220
Melting Completion (Liquidus), °C 1400
1050
Melting Onset (Solidus), °C 1350
1040
Specific Heat Capacity, J/kg-K 480
420
Thermal Conductivity, W/m-K 14
67
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
14
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
15

Otherwise Unclassified Properties

Base Metal Price, % relative 15
28
Density, g/cm3 7.7
8.5
Embodied Carbon, kg CO2/kg material 3.0
3.0
Embodied Energy, MJ/kg 43
48
Embodied Water, L/kg 160
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
160 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
210 to 310
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 25 to 36
18 to 19
Strength to Weight: Bending, points 23 to 29
17 to 18
Thermal Diffusivity, mm2/s 3.8
19
Thermal Shock Resistance, points 15 to 21
18 to 20

Alloy Composition

Aluminum (Al), % 0
6.0 to 8.0
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
86 to 92.5
Iron (Fe), % 59.5 to 67.4
1.5 to 3.5
Lead (Pb), % 0
0 to 0.010
Manganese (Mn), % 8.0 to 10
0 to 1.0
Nickel (Ni), % 5.5 to 7.5
0
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.015
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5