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C33000 Brass vs. S21904 Stainless Steel

C33000 brass belongs to the copper alloys classification, while S21904 stainless steel belongs to the iron alloys. There are 29 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 C33000 brass and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
200
Elongation at Break, % 7.0 to 60
17 to 51
Poisson's Ratio 0.31
0.28
Shear Modulus, GPa 40
78
Shear Strength, MPa 240 to 300
510 to 620
Tensile Strength: Ultimate (UTS), MPa 320 to 520
700 to 1000
Tensile Strength: Yield (Proof), MPa 110 to 450
390 to 910

Thermal Properties

Latent Heat of Fusion, J/g 180
290
Maximum Temperature: Mechanical, °C 130
980
Melting Completion (Liquidus), °C 940
1400
Melting Onset (Solidus), °C 900
1350
Specific Heat Capacity, J/kg-K 390
480
Thermal Conductivity, W/m-K 120
14
Thermal Expansion, µm/m-K 20
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 24
15
Density, g/cm3 8.2
7.7
Embodied Carbon, kg CO2/kg material 2.7
3.0
Embodied Energy, MJ/kg 45
43
Embodied Water, L/kg 320
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35 to 150
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 60 to 950
380 to 2070
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 11 to 18
25 to 36
Strength to Weight: Bending, points 13 to 18
23 to 29
Thermal Diffusivity, mm2/s 37
3.8
Thermal Shock Resistance, points 11 to 17
15 to 21

Alloy Composition

Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
19 to 21.5
Copper (Cu), % 65 to 68
0
Iron (Fe), % 0 to 0.070
59.5 to 67.4
Lead (Pb), % 0.25 to 0.7
0
Manganese (Mn), % 0
8.0 to 10
Nickel (Ni), % 0
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 30.8 to 34.8
0
Residuals, % 0 to 0.4
0