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S21904 Stainless Steel vs. C85800 Brass

S21904 stainless steel belongs to the iron alloys classification, while C85800 brass belongs to the copper alloys. There are 28 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 C85800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 17 to 51
15
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 78
40
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
380
Tensile Strength: Yield (Proof), MPa 390 to 910
210

Thermal Properties

Latent Heat of Fusion, J/g 290
170
Maximum Temperature: Mechanical, °C 980
120
Melting Completion (Liquidus), °C 1400
900
Melting Onset (Solidus), °C 1350
870
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 14
84
Thermal Expansion, µm/m-K 17
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
20
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
22

Otherwise Unclassified Properties

Base Metal Price, % relative 15
24
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.0
2.8
Embodied Energy, MJ/kg 43
47
Embodied Water, L/kg 160
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
48
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
210
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
20
Strength to Weight: Axial, points 25 to 36
13
Strength to Weight: Bending, points 23 to 29
15
Thermal Diffusivity, mm2/s 3.8
27
Thermal Shock Resistance, points 15 to 21
13

Alloy Composition

Aluminum (Al), % 0
0 to 0.55
Antimony (Sb), % 0
0 to 0.050
Arsenic (As), % 0
0 to 0.050
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
57 to 69
Iron (Fe), % 59.5 to 67.4
0 to 0.5
Lead (Pb), % 0
0 to 1.5
Manganese (Mn), % 8.0 to 10
0 to 0.25
Nickel (Ni), % 5.5 to 7.5
0 to 0.5
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.010
Silicon (Si), % 0 to 1.0
0 to 0.25
Sulfur (S), % 0 to 0.030
0 to 0.050
Tin (Sn), % 0
0 to 1.5
Zinc (Zn), % 0
31 to 41
Residuals, % 0
0 to 1.3