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S21904 Stainless Steel vs. C84800 Brass

S21904 stainless steel belongs to the iron alloys classification, while C84800 brass 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 C84800 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 17 to 51
18
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
39
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
230
Tensile Strength: Yield (Proof), MPa 390 to 910
100

Thermal Properties

Latent Heat of Fusion, J/g 290
180
Maximum Temperature: Mechanical, °C 980
150
Melting Completion (Liquidus), °C 1400
950
Melting Onset (Solidus), °C 1350
830
Specific Heat Capacity, J/kg-K 480
370
Thermal Conductivity, W/m-K 14
72
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
16
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
17

Otherwise Unclassified Properties

Base Metal Price, % relative 15
27
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 3.0
2.8
Embodied Energy, MJ/kg 43
46
Embodied Water, L/kg 160
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
34
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
53
Stiffness to Weight: Axial, points 14
6.6
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 25 to 36
7.3
Strength to Weight: Bending, points 23 to 29
9.6
Thermal Diffusivity, mm2/s 3.8
23
Thermal Shock Resistance, points 15 to 21
8.2

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
75 to 77
Iron (Fe), % 59.5 to 67.4
0 to 0.4
Lead (Pb), % 0
5.5 to 7.0
Manganese (Mn), % 8.0 to 10
0
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 to 1.5
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.030
0 to 0.080
Tin (Sn), % 0
2.0 to 3.0
Zinc (Zn), % 0
13 to 17
Residuals, % 0
0 to 0.7