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S21904 Stainless Steel vs. C35000 Brass

S21904 stainless steel belongs to the iron alloys classification, while C35000 brass belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is C35000 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 78
40
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
340 to 650

Thermal Properties

Latent Heat of Fusion, J/g 290
170
Maximum Temperature: Mechanical, °C 980
120
Melting Completion (Liquidus), °C 1400
920
Melting Onset (Solidus), °C 1350
890
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 14
120
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
26
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
29

Otherwise Unclassified Properties

Base Metal Price, % relative 15
23
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 43
45
Embodied Water, L/kg 160
320

Common Calculations

Stiffness to Weight: Axial, points 14
7.1
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 25 to 36
12 to 22
Strength to Weight: Bending, points 23 to 29
13 to 21
Thermal Diffusivity, mm2/s 3.8
37
Thermal Shock Resistance, points 15 to 21
11 to 22

Alloy Composition

Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
60 to 63
Iron (Fe), % 59.5 to 67.4
0 to 0.1
Lead (Pb), % 0
0.8 to 2.0
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
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
34.5 to 39.2
Residuals, % 0
0 to 0.4