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S21904 Stainless Steel vs. C51900 Bronze

S21904 stainless steel belongs to the iron alloys classification, while C51900 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 S21904 stainless steel and the bottom bar is C51900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17 to 51
14 to 29
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 78
42
Shear Strength, MPa 510 to 620
320 to 370
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
380 to 620
Tensile Strength: Yield (Proof), MPa 390 to 910
390 to 570

Thermal Properties

Latent Heat of Fusion, J/g 290
200
Maximum Temperature: Mechanical, °C 980
180
Melting Completion (Liquidus), °C 1400
1040
Melting Onset (Solidus), °C 1350
930
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 14
66
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
14

Otherwise Unclassified Properties

Base Metal Price, % relative 15
33
Density, g/cm3 7.7
8.8
Embodied Carbon, kg CO2/kg material 3.0
3.2
Embodied Energy, MJ/kg 43
51
Embodied Water, L/kg 160
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
55 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
680 to 1450
Stiffness to Weight: Axial, points 14
7.0
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 25 to 36
12 to 19
Strength to Weight: Bending, points 23 to 29
13 to 18
Thermal Diffusivity, mm2/s 3.8
20
Thermal Shock Resistance, points 15 to 21
14 to 22

Alloy Composition

Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
91.7 to 95
Iron (Fe), % 59.5 to 67.4
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 8.0 to 10
0
Nickel (Ni), % 5.5 to 7.5
0
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0.030 to 0.35
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
5.0 to 7.0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.5