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C85400 Brass vs. S21904 Stainless Steel

C85400 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 (4, in this case) are not shown.

For each property being compared, the top bar is C85400 brass and the bottom bar is S21904 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
210 to 300
Elastic (Young's, Tensile) Modulus, GPa 100
200
Elongation at Break, % 23
17 to 51
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 40
78
Tensile Strength: Ultimate (UTS), MPa 220
700 to 1000
Tensile Strength: Yield (Proof), MPa 85
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 940
1350
Specific Heat Capacity, J/kg-K 380
480
Thermal Conductivity, W/m-K 89
14
Thermal Expansion, µm/m-K 20
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 25
15
Density, g/cm3 8.3
7.7
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 46
43
Embodied Water, L/kg 330
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 40
160 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 35
380 to 2070
Stiffness to Weight: Axial, points 7.0
14
Stiffness to Weight: Bending, points 19
25
Strength to Weight: Axial, points 7.5
25 to 36
Strength to Weight: Bending, points 9.9
23 to 29
Thermal Diffusivity, mm2/s 28
3.8
Thermal Shock Resistance, points 7.6
15 to 21

Alloy Composition

Aluminum (Al), % 0 to 0.35
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
19 to 21.5
Copper (Cu), % 65 to 70
0
Iron (Fe), % 0 to 0.7
59.5 to 67.4
Lead (Pb), % 1.5 to 3.8
0
Manganese (Mn), % 0
8.0 to 10
Nickel (Ni), % 0 to 1.0
5.5 to 7.5
Nitrogen (N), % 0
0.15 to 0.4
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.050
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0.5 to 1.5
0
Zinc (Zn), % 24 to 32
0
Residuals, % 0 to 1.1
0