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S21904 Stainless Steel vs. C67400 Bronze

S21904 stainless steel belongs to the iron alloys classification, while C67400 bronze belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is C67400 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17 to 51
22 to 28
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 78
41
Shear Strength, MPa 510 to 620
310 to 350
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
480 to 610
Tensile Strength: Yield (Proof), MPa 390 to 910
250 to 370

Thermal Properties

Latent Heat of Fusion, J/g 290
190
Maximum Temperature: Mechanical, °C 980
130
Melting Completion (Liquidus), °C 1400
890
Melting Onset (Solidus), °C 1350
870
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 14
100
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
23
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
26

Otherwise Unclassified Properties

Base Metal Price, % relative 15
23
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
2.8
Embodied Energy, MJ/kg 43
48
Embodied Water, L/kg 160
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
300 to 660
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 25 to 36
17 to 22
Strength to Weight: Bending, points 23 to 29
17 to 20
Thermal Diffusivity, mm2/s 3.8
32
Thermal Shock Resistance, points 15 to 21
16 to 20

Alloy Composition

Aluminum (Al), % 0
0.5 to 2.0
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
57 to 60
Iron (Fe), % 59.5 to 67.4
0 to 0.35
Lead (Pb), % 0
0 to 0.5
Manganese (Mn), % 8.0 to 10
2.0 to 3.5
Nickel (Ni), % 5.5 to 7.5
0 to 0.25
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0.5 to 1.5
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.3
Zinc (Zn), % 0
31.1 to 40
Residuals, % 0
0 to 0.5