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C61800 Bronze vs. S81921 Stainless Steel

C61800 bronze belongs to the copper alloys classification, while S81921 stainless steel belongs to the iron alloys. There are 30 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 C61800 bronze and the bottom bar is S81921 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 26
29
Fatigue Strength, MPa 190
370
Poisson's Ratio 0.34
0.28
Shear Modulus, GPa 44
79
Shear Strength, MPa 310
460
Tensile Strength: Ultimate (UTS), MPa 740
710
Tensile Strength: Yield (Proof), MPa 310
500

Thermal Properties

Latent Heat of Fusion, J/g 230
290
Maximum Temperature: Mechanical, °C 220
990
Melting Completion (Liquidus), °C 1050
1430
Melting Onset (Solidus), °C 1040
1390
Specific Heat Capacity, J/kg-K 440
480
Thermal Conductivity, W/m-K 64
15
Thermal Expansion, µm/m-K 18
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 14
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 28
14
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.9
Embodied Energy, MJ/kg 52
41
Embodied Water, L/kg 390
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
180
Resilience: Unit (Modulus of Resilience), kJ/m3 420
630
Stiffness to Weight: Axial, points 7.5
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 18
4.0
Thermal Shock Resistance, points 26
20

Alloy Composition

Aluminum (Al), % 8.5 to 11
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
19 to 22
Copper (Cu), % 86.9 to 91
0
Iron (Fe), % 0.5 to 1.5
66.7 to 75.9
Lead (Pb), % 0 to 0.020
0
Manganese (Mn), % 0
2.0 to 4.0
Molybdenum (Mo), % 0
1.0 to 2.0
Nickel (Ni), % 0
2.0 to 4.0
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.020
0
Residuals, % 0 to 0.5
0