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S21904 Stainless Steel vs. C85400 Brass

S21904 stainless steel belongs to the iron alloys classification, while C85400 brass belongs to the copper 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 S21904 stainless steel and the bottom bar is C85400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
55
Elastic (Young's, Tensile) Modulus, GPa 200
100
Elongation at Break, % 17 to 51
23
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 78
40
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
220
Tensile Strength: Yield (Proof), MPa 390 to 910
85

Thermal Properties

Latent Heat of Fusion, J/g 290
180
Maximum Temperature: Mechanical, °C 980
130
Melting Completion (Liquidus), °C 1400
940
Melting Onset (Solidus), °C 1350
940
Specific Heat Capacity, J/kg-K 480
380
Thermal Conductivity, W/m-K 14
89
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
25
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 3.0
2.8
Embodied Energy, MJ/kg 43
46
Embodied Water, L/kg 160
330

Common Calculations

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

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
65 to 70
Iron (Fe), % 59.5 to 67.4
0 to 0.7
Lead (Pb), % 0
1.5 to 3.8
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
Silicon (Si), % 0 to 1.0
0 to 0.050
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0.5 to 1.5
Zinc (Zn), % 0
24 to 32
Residuals, % 0
0 to 1.1