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S21904 Stainless Steel vs. C69710 Brass

S21904 stainless steel belongs to the iron alloys classification, while C69710 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 C69710 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 17 to 51
25
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 78
41
Shear Strength, MPa 510 to 620
300
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
470
Tensile Strength: Yield (Proof), MPa 390 to 910
230

Thermal Properties

Latent Heat of Fusion, J/g 290
240
Maximum Temperature: Mechanical, °C 980
160
Melting Completion (Liquidus), °C 1400
930
Melting Onset (Solidus), °C 1350
880
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 14
40
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 15
26
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 3.0
2.7
Embodied Energy, MJ/kg 43
44
Embodied Water, L/kg 160
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
99
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
250
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 25 to 36
16
Strength to Weight: Bending, points 23 to 29
16
Thermal Diffusivity, mm2/s 3.8
12
Thermal Shock Resistance, points 15 to 21
16

Alloy Composition

Arsenic (As), % 0
0.030 to 0.060
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
75 to 80
Iron (Fe), % 59.5 to 67.4
0 to 0.2
Lead (Pb), % 0
0.5 to 1.5
Manganese (Mn), % 8.0 to 10
0 to 0.4
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
2.5 to 3.5
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
13.8 to 22
Residuals, % 0
0 to 0.5