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S21900 Stainless Steel vs. C84200 Brass

S21900 stainless steel belongs to the iron alloys classification, while C84200 brass belongs to the copper alloys. There are 28 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 S21900 stainless steel and the bottom bar is C84200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 50
15
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
40
Tensile Strength: Ultimate (UTS), MPa 710
250
Tensile Strength: Yield (Proof), MPa 390
120

Thermal Properties

Latent Heat of Fusion, J/g 290
180
Maximum Temperature: Mechanical, °C 980
150
Melting Completion (Liquidus), °C 1400
990
Melting Onset (Solidus), °C 1350
840
Specific Heat Capacity, J/kg-K 480
370
Thermal Conductivity, W/m-K 14
72
Thermal Expansion, µm/m-K 17
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
16
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
17

Otherwise Unclassified Properties

Base Metal Price, % relative 15
30
Density, g/cm3 7.7
8.5
Embodied Carbon, kg CO2/kg material 3.0
3.1
Embodied Energy, MJ/kg 43
51
Embodied Water, L/kg 160
350

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 300
31
Resilience: Unit (Modulus of Resilience), kJ/m3 380
72
Stiffness to Weight: Axial, points 14
6.9
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 26
8.2
Strength to Weight: Bending, points 23
10
Thermal Diffusivity, mm2/s 3.8
23
Thermal Shock Resistance, points 15
9.1

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 19 to 21.5
0
Copper (Cu), % 0
78 to 82
Iron (Fe), % 59.4 to 67.4
0 to 0.4
Lead (Pb), % 0
2.0 to 3.0
Manganese (Mn), % 8.0 to 10
0
Nickel (Ni), % 5.5 to 7.5
0 to 0.8
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 1.5
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.030
0 to 0.080
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0
10 to 16
Residuals, % 0
0 to 0.7