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S21904 Stainless Steel vs. C86700 Bronze

S21904 stainless steel belongs to the iron alloys classification, while C86700 bronze belongs to the copper alloys. There are 28 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 C86700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17 to 51
17
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 78
41
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
630
Tensile Strength: Yield (Proof), MPa 390 to 910
250

Thermal Properties

Latent Heat of Fusion, J/g 290
180
Maximum Temperature: Mechanical, °C 980
130
Melting Completion (Liquidus), °C 1400
880
Melting Onset (Solidus), °C 1350
860
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 14
89
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
17
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
19

Otherwise Unclassified Properties

Base Metal Price, % relative 15
23
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
2.9
Embodied Energy, MJ/kg 43
49
Embodied Water, L/kg 160
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
86
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
290
Stiffness to Weight: Axial, points 14
7.5
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 25 to 36
22
Strength to Weight: Bending, points 23 to 29
21
Thermal Diffusivity, mm2/s 3.8
28
Thermal Shock Resistance, points 15 to 21
21

Alloy Composition

Aluminum (Al), % 0
1.0 to 3.0
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
55 to 60
Iron (Fe), % 59.5 to 67.4
1.0 to 3.0
Lead (Pb), % 0
0.5 to 1.5
Manganese (Mn), % 8.0 to 10
1.0 to 3.5
Nickel (Ni), % 5.5 to 7.5
0 to 1.0
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 1.5
Zinc (Zn), % 0
30 to 38
Residuals, % 0
0 to 1.0